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New Holland Tractor Workmaster 50 / Workmaster 60 / Workmaster 70 / Tier 4B (final). SERVICE MANUAL - page 18

Electrical systems - FAULT CODES

DTC 11C-02-Water in fuel sensor or sensor circuit failure

Control Module : ECU

NOTE: This fault code is for the Water in Fuel switch with black connector housing.

Context:

The water in fuel switch S-9102 provides a diagnostic self-test signal (less than 3.9 V for 2.5 s +/- 20%) at key-ON.

If the Engine Control Unit (ECU) A-9000 does not sense the diagnostic self-test signal, this fault will occur and there

will be no monitoring of water content in the fuel supply.

Cause:

The ECU A-9000 has not received an acceptable water in fuel switch S-9102 self-test signal.

Possible failure modes:

1. Faulty water in fuel switch S-9102 circuit wiring, damaged.

2. Faulty water in fuel switch S-9102, internal failure.

3. Faulty ECU A-9000, software.

Solution:

1.

Verify this fault code is still present and in an active state.

Use the Easy Engine software provided on the Electronic Service Tool (EST) to check the fault status.

A. If the fault is still present and active, continue with Step 2.

B. If the fault is no longer present or is in an inactive state, Continue with Step 7.

2.

Use the EST to check for related faults that may have caused this fault to occur.

A. If any other faults that may have caused this fault to occur are active, resolve those faults first and then return

to this fault.

B. If no other faults are active,continue with Step 3.

3.

Check the water in fuel switch S-9102 for the initial self-test voltage pulse.

Carefully back probe the water in fuel switch S-9102 at connector X-9125.

With the help of an assistant, use a multimeter to perform the following test at Key-ON:

From

To

Value

X-9125 pin 1

Chassis ground

There should be less than 3.9 V for

2.5 s +/- 20%.

NOTE: The signal line should switch to battery voltage after the self-test period.

A. If the self-test is successful, continue with Step 4.

B. If the self-test is not successful, the water in fuel switch S-9102 has failed internally. Replace the switch.

4.

Check for open, short and grounded circuit conditions in the water in fuel switch S-9102 circuit.

Disconnect the water in fuel switch S-9102 at connector X-9125.

Disconnect the vehicle (VE) harness from the ECU A-9000 at connector X-9102.

With the key switch in the OFF position, use a multimeter to perform the following tests, on the vehicle (VE) harness

from :

8

Electrical systems - FAULT CODES

From

To

Value

X-9125 pin 1

X-9102 pin K88

There should be continuity.

X-9125 pin 2

Chassis ground

There should be continuity.

X-9125 pin 3

X-9102 pin K01

There should be continuity.

Then use the multimeter to perform the following tests, on the vehicle (VE) harness from :

From

To

Value

X-9125 pin 1

X-9125 pin 2

There should be no continuity

X-9125 pin 1

X-9125 pin 3

There should be no continuity

X-9125 pin 2

X-9125 pin 3

There should be no continuity

Then use the multimeter to perform the following tests, on the vehicle (VE) harness from :

From

To

Value

X-9125 pin 1

Chassis ground

There should be no continuity

X-9125 pin 3

Chassis ground

There should be no continuity

A. If the results are not as expected for any of the wiring tests listed above, there is an open, short or grounded

circuit condition in the vehicle harness (VE) wiring. Use the appropriate vehicle service manual and schematics

to diagnose and repair the wiring.

B. If the results are as expected in all of the wiring tests listed above, the wiring is ok. Leave connectors X-9102

and X-9125 disconnected and continue with Step 5.

5.

Check for key switch voltage supply to water in fuel switch S-9102.

With the key switch in an ON position, use a multimeter to perform the following test, on the vehicle (VE) harness

side from :

From

To

Value

X-9125 pin 3

Chassis ground

There should be key switch voltage.

X-9125 pin 1

Chassis ground

There should be no key switch

voltage.

A. If there is key switch voltage present in the first check and not present in the second check, continue with Step

6.

B. If key switch voltage is not present in the first check or present in the second check, use the appropriate vehicle

service manual and schematics to diagnose and repair the wiring.

6.

Replace the water in fuel switch S-9102, then check to see if this fault has been resolved.

A. If the fault is resolved, return the machine to service.

B. If the fault is not resolved, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

7.

Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,

or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent

breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.

A. If you find damage or the display indicates other than normal readings, then repair the damage discovered

during the inspection or locate and repair the other than normal display condition and verify that the error has

been resolved.

B. If you do not find damage and the display indicates only normal readings, then erase the fault code and continue

operation.

Wiring harnesses - Electrical schematic sheet 02 - Engine Control Unit (ECU) power and after treatment

system (engine schematics) (55.100.DP-C.20.E.02)

9

Electrical systems - FAULT CODES

DTC 11C-03-Water in fuel detected or water in fuel circuit failure

Control Module : ECU

NOTE: This fault code is for the Water in Fuel switch with black connector housing.

Context:

The Engine Control Unit (ECU) A-9000 monitors the voltage output from the water in fuel switch S-9102 to determine

if water is present in the fuel supply. If water is detected in the fuel, warnings will be displayed to alert the operator

of potential engine damage if operation continues. High voltage signal from the water in fuel switch S-9102 indicates

water present.

Cause:

This fault code is displayed to warn the operator that the Engine Control Unit (ECU) A-9000 has detected excess

water in the fuel system or a fault in the water in fuel switch circuit.

Possible failure modes:

1. Excess water in the fuel supply.

2. Faulty water in fuel switch S-9102, wiring or internal (mechanical and/or electrical) failure.

3. Faulty ECU A-9000, software.

Solution:

1.

Verify this fault code is still present and in an active state.

Use the Easy Engine software provided on the Electronic Service Tool (EST) to check the fault status.

A. If the fault is still present and active, continue with Step 2.

B. If the fault is no longer present or is in an inactive state, Continue with Step 7.

2.

Check fuel for water contamination.

A. If there is water contamination, continue with Step 3.

B. If there is no water contamination, Continue with Step 4.

3.

Verify proper water in fuel switch S-9102 operation.

Purge fuel supply system, replace fuel filter(s) and refill with fuel that is free of water contamination.

Start and run engine for 5 minutes.

Check for code to return to active status.

A. If code returns in an active status, replace water in fuel switch S-9102.

B. If code remains inactive, return the machine to service.

4.

Check for open, short and grounded circuit conditions in the water in fuel switch S-9102 circuit.

Disconnect the water in fuel switch S-9102 at connector X-9125.

Disconnect the vehicle harness (VE) from the ECU A-9000 at connector X-9102.

With the key switch in the OFF position, use a multimeter to perform the following tests, on the vehicle (VE) harness

from :

From

To

Value

X-9125 pin 1

X-9102 pin K88

There should be continuity.

X-9125 pin 2

Chassis ground

There should be continuity.

X-9125 pin 3

X-9102 pin K01

There should be continuity.

10

Electrical systems - FAULT CODES

Then use the multimeter to perform the following tests, on the vehicle (VE) harness from :

From

To

Value

X-9125 pin 1

X-9125 pin 2

There should be no continuity

X-9125 pin 1

X-9125 pin 3

There should be no continuity

X-9125 pin 2

X-9125 pin 3

There should be no continuity

Then use the multimeter to perform the following tests, on the vehicle (VE) harness from :

From

To

Value

X-9125 pin 1

Chassis ground

There should be no continuity

X-9125 pin 3

Chassis ground

There should be no continuity

A. If the results are not as expected for any of the wiring tests listed above, there is an open, short or grounded

circuit condition in the vehicle harness (VE) wiring. Use the appropriate vehicle service manual and schematics

to diagnose and repair the wiring.

B. If the results are as expected in all of the wiring tests listed above, the wiring is ok. Leave connectors X-9102

and X-9125 disconnected and continue with Step 5.

5.

Check for key switch voltage supply to water in fuel switch S-9102.

With the key switch in an ON position, use a multimeter to perform the following test, on the vehicle (VE) harness

side from :

From

To

Value

X-9125 pin 3

Chassis ground

There should be key switch voltage.

X-9125 pin 1

Chassis ground

There should be no key switch

voltage.

A. If there is key switch voltage present in the first check and not present in the second check, continue with Step

6.

B. If key switch voltage is not present in the first check or present in the second check, use the appropriate vehicle

service manual and schematics to diagnose and repair the wiring.

6.

Replace the water in fuel switch S-9102, then check to see if this fault has been resolved.

A. If the fault is resolved, return the machine to service.

B. If the fault is not resolved, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

7.

Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,

or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent

breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.

A. If you find damage or the display indicates other than normal readings, then repair the damage discovered

during the inspection or locate and repair the other than normal display condition and verify that the error has

been resolved.

B. If you do not find damage and the display indicates only normal readings, then erase the fault code and continue

operation.

Wiring harnesses - Electrical schematic sheet 02 - Engine Control Unit (ECU) power and after treatment

system (engine schematics) (55.100.DP-C.20.E.02)

11

Electrical systems - FAULT CODES

DTC 131-03-Engine coolant temperature sensor voltage is higher

than expected

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the engine coolant temperature sensor B-9003 signal circuit. If the

ECU A-9000 determines that voltage is higher than expected in the engine coolant temperature sensor B-9003 signal

circuit, this fault will occur. If this fault is active, the ECU A-9000 will set the engine coolant temperature value to a

fixed replacement value of 89.96 °C (193.93 °F).

Cause:

The engine coolant temperature sensor B-9003 signal voltage is greater than 4.93 V.

Possible failure modes:

1. Faulty engine coolant temperature sensor B-9003, short to a voltage source.

2. Faulty engine coolant temperature sensor B-9003, internal failure.

3. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 6.

2.

Check the coolant temperature sensor B-9003 wiring for a short circuit.

Disconnect the engine harness (EN) from the coolant temperature sensor B-9003 at connector X-9006.

With the key in the OFF position, use a multimeter to perform the following voltage check on the engine harness

side:

From

To

Value

X-9006 pin 1

Chassis ground

There should be no voltage.

With the key in the ON position, use a multimeter to perform the following voltage check on the engine harness

side:

From

To

Value

X-9006 pin 1

Chassis ground

There should be less than 5.5 V

A. If the specified values are not measured, there is a short to a voltage source in the coolant temperature sensor

B-9003 wiring. Use the appropriate service manual, if necessary, to locate and repair the shorted conductor.

B. If the specified values are not measured, leave connector X-9006 disconnected and continue to Step 3.

3.

Check the coolant temperature sensor B-9003 engine harness (EN) wiring for a short circuit.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side:

12

Electrical systems - FAULT CODES

From

To

Value

X-9006 pin 1

X-9001 pin A57

There should be continuity.

X-9006 pin 2

X-9001 pin A58

There should be continuity.

A. If there is continuity, leave the connector X-9001 disconnected and continue to Step 4.

B. If there is no continuity, there is an open circuit in the coolant temperature sensor B-9003 wiring. Locate and

repair the broken conductor.

4.

Check the coolant temperature sensor B-9003 engine harness (EN) wiring for a short circuit.

With the key in the OFF position, use a multimeter to perform the following continuity check from the engine har-

ness (EN) side:

From

To

Value

X-9001 pin A57

All pins in connector X-9001

There should be no continuity.

X-9001 pin A58

All pins in connector X-9001

There should be no continuity.

A. If there is no continuity, leave connector X-9006 disconnected and continue to Step 5.

B. If there is continuity, there is a short circuit condition in the wiring. Locate and repair the shorted conductor.

5.

Replace the engine coolant temperature sensor B-9003.

Use the EST to verify the status of the this fault.

A. If the fault is no longer active, return the machine to service.

B. If the fault is still active, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

6.

Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,

or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent

breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.

A. If you find damage or the display indicates other than normal display readings, then repair the damage discov-

ered during the inspection or locate and repair the other than normal display condition and verify that the error

has been resolved.

B. If you do not find damage and the display indicates only normal readings, then erase the fault code and continue

operation.

Wiring harnesses - Electrical schematic sheet 03 - Engine sensors and fuel injection (engine schematics)

(55.100.DP-C.20.E.03)

13

Electrical systems - FAULT CODES

DTC 131-04-Engine coolant temperature sensor voltage is lower

than expected

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the engine coolant temperature sensor B-9003 signal circuit. If the

ECU A-9000 determines that voltage is lower than expected in the engine coolant temperature sensor B-9003 signal

circuit, this fault will occur. If this fault is active, the ECU A-9000 will set the engine coolant temperature value to a

fixed replacement value of 89.96 °C (193.93 °F).

Cause:

The engine coolant temperature sensor B-9003 signal voltage is less than 198.00 mV.

Possible failure modes:

1. Faulty engine coolant temperature sensor B-9003 wiring, short to ground condition.

2. Faulty engine coolant temperature sensor B-9003, internal failure.

3. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 5.

2.

Check the coolant temperature sensor B-9003 engine harness (EN) wiring for a short to ground condition.

Disconnect the engine harness (EN) from the coolant temperature sensor B-9003 at connector X-9006.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side:

To

From

Value

X-9006 pin 1

X-9006 pin 2

There should be no continuity.

X-9006 pin 1

Chassis ground

There should be no continuity.

A. If there is no continuity, leave connector X-9006 disconnected and continue to Step 3.

B. If there is continuity, there is a short to ground condition in the coolant temperature sensor B-9003 engine

harness (EN) wiring. Locate and repair the shorted conductor.

3.

Check the coolant temperature sensor B-9003 engine harness (EN) wiring for a short to ground condition.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side:

From

To

Value

X-9001 pin A57

All pins in connector X-9001

There should be no continuity.

A. If there is no continuity, leave connector X-9006 disconnected and continue to Step 4.

B. If there is continuity, there is a short circuit in the coolant temperature sensor B-9003 engine harness (EN)

wiring. Locate and repair the shorted or broken conductor.

14

Electrical systems - FAULT CODES

DTC 133-03-Intake manifold temperature sensor voltage is higher

than expected

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the intake manifold temperature sensor B-9001 signal circuit. If the

ECU A-9000 determines that the intake manifold temperature sensor B-9001 signal circuit voltage is greater than

4.94 V, this fault will occur.

Cause:

The ECU A-9000 has determined that the intake manifold temperature sensor B-9001 signal circuit voltage is greater

than 4.94 V

Possible failure modes:

1. Faulty intake manifold temperature sensor B-9001 wiring, short to a voltage source.

2. Faulty intake manifold temperature sensor B-9001 wiring, open circuit.

3. Faulty intake manifold temperature sensor B-9001, internal failure.

4. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 6.

2.

Check the intake manifold temperature sensor B-9001 wiring for a short to battery condition.

Disconnect the engine harness (EN) from the intake manifold temperature sensor B-9001 at connector X-9003.

With the key in the OFF position, use a multimeter to perform the following voltage check on the engine harness

(EN) side :

From

To

Value

X-9003 pin 2

Chassis ground

There should be no voltage.

With the key in the ON position, use a multimeter to perform the following voltage check at the engine harness

(EN) side of the connector from :

From

To

Value

X-9003 pin 2

Chassis ground

There should be less than 5.5 V.

A. If the specified values are not measured, there is a short to a voltage source in the intake manifold temperature

sensor B-9001 signal circuit. Use the appropriate service manual, if necessary, to locate and repair the shorted

conductor.

B. If the specified values are measured, leave connector X-9003 disconnected and continue to Step 3.

3.

Check the intake manifold temperature sensor B-9001 wiring for an open circuit condition.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity check for an open circuit on

the engine harness side:

16

Electrical systems - FAULT CODES

From

To

Value

X-9003 pin 2

X-9001 pin A55

There should be continuity.

X-9003 pin 3

X-9001 pin A10

There should be continuity.

NOTE: Wiggle the harness during the check to promote an intermittent electrical connection.

A. If there is no continuity, there is an open circuit in the intake manifold temperature sensor B-9001 wiring. Locate

and repair the broken conductor.

B. If there is continuity, leave connector X-9003 and X-9001 disconnected and continue to Step 4.

4.

Check the intake manifold temperature sensor B-9001 engine harness (EN) wiring for a short circuit.

With the key in the OFF position, use a multimeter to perform the following continuity check for a short circuit on

the engine harness (EN) side:

From

To

Value

X-9001 pin A55

All pins in connector X-9001

There should be no continuity.

A. If there is continuity, there is a short circuit in the intake manifold temperature sensor B-9001 in the engine

harness (EN) wiring. Locate and repair the shorted conductor.

B. If there no continuity, leave connector X-9003 disconnected and continue to Step 5.

5.

Replace the intake manifold temperature sensor B-9001.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is no longer active, return the machine to service.

B. If the fault is still active, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

6.

Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,

or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent

breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.

A. If you find damage or the display indicates other than normal display readings, then repair the damage discov-

ered during the inspection or locate and repair the other than normal display condition and verify that the error

has been resolved.

B. If you do not find damage and the display indicates only normal readings, then erase the fault code and continue

operation.

Wiring harnesses - Electrical schematic sheet 03 - Engine sensors and fuel injection (engine schematics)

(55.100.DP-C.20.E.03)

17

Electrical systems - FAULT CODES

DTC 133-04-Intake manifold temperature sensor voltage is lower

than expected

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the intake manifold temperature sensor B-9001 signal circuit. If

the ECU A-9000 determines that the intake manifold temperature sensor B-9001 signal circuit voltage is less than

266.40 mV, this fault will occur.

Cause:

The ECU A-9000 has determined that the intake manifold temperature sensor B-9001 signal circuit voltage is less

than 266.40 mV.

Possible failure modes:

1. Faulty intake manifold temperature sensor B-9001 wiring, short to ground condition.

2. Faulty intake manifold temperature sensor B-9001, internal failure.

3. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 5.

2.

Check the intake manifold temperature sensor B-9001 engine harness (EN) wiring.

Disconnect the engine harness (EN) from the intake manifold temperature sensor B-9001 at connector X-9003.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

From

To

Value

X-9003 pin 2

X-9003 pin 1

There should be no continuity.

X-9003 pin 2

Chassis ground

There should be no continuity.

A. If there is continuity, there is a short to ground condition in the intake manifold temperature sensor B-9001 in

the engine harness (EN) wiring. Locate and repair the shorted conductor.

B. If there no continuity, leave connector X-9003 disconnected and continue to Step 3.

3.

Check the intake manifold temperature sensor B-9001 engine harness (EN) wiring.

Disconnect the vehicle harness (VE) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

From

To

Value

X-9001 pin A55

All pins in connector X-9001

There should be no continuity.

A. If there is continuity, there is a short circuit in the intake manifold temperature sensor B-9001 in the engine har-

ness (EN) wiring. Use the appropriate service manual, if necessary, to locate and repair the shorted conductor.

B. If there no continuity, leave connector X-9003 disconnected and continue to Step 4.

18

Electrical systems - FAULT CODES

DTC 134-03-Intake manifold pressure sensor voltage is higher

than expected

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the intake manifold pressure sensor B-9001. If the ECU A-9000

determines that the intake manifold pressure sensor B-9001 signal circuit voltage is greater than 4.92 V, this fault will

occur. If this fault is active, the intake manifold pressure value will be frozen at the last valid value for a preliminary

failure or jump to a fixed replacement value of 0.98 bar (14.21 psi) if the failure is validated.

Cause:

The ECU A-9000 has determined that the intake manifold pressure sensor B-9001 signal circuit voltage is greater

than 4.92 V.

Possible failure modes:

1. Faulty intake manifold pressure sensor B-9001 wiring, short to a voltage source.

2. Faulty intake manifold pressure sensor B-9001 wiring, open circuit.

3. Faulty intake manifold pressure sensor B-9001, internal failure.

4. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 6.

2.

Check the intake manifold pressure sensor B-9001 wiring for a short to a voltage source.

Disconnect the engine harness (EN) from the intake manifold pressure sensor B-9001 at connector X-9003.

With the key in the OFF position, use a multimeter to perform the following voltage check on the engine harness

(EN) side :

From

To

Value

X-9003 pin 4

Chassis ground

There should be no voltage.

With the key in the ON position, use a multimeter to perform the following voltage check on the engine harness

side :

From

To

Value

X-9003 pin 4

Chassis ground

There should be less than 5.5 V

A. If there is voltage, there is a short to battery or switched battery in the intake manifold pressure sensor B-9001

wiring. Use the appropriate service manual, if necessary, to locate and repair the shorted conductor.

B. If there is no voltage, leave connector X-9003 disconnected and continue to Step 3.

3.

Check the intake manifold pressure sensor B-9001 wiring in the engine harness (EN) for an open circuit.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

22

Electrical systems - FAULT CODES

From

To

Value

X-9003 pin 4

X-9001 pin A40

There should be continuity.

X-9003 pin 3

X-9001 pin A10

There should be continuity.

NOTE: Wiggle the harness during the check to promote an intermittent electrical connection.

A. If there is no continuity, there is an open circuit in the intake manifold pressure sensor B-9001 wiring in the

engine harness (EN). Locate and repair the broken conductor.

B. If there is continuity, leave connectors X-9003 and X-9001 disconnected and continue to Step 4.

4.

Check the intake manifold pressure sensor B-9001 wiring in the engine harness (EN) for a short to a voltage

source.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

From

To

Value

X-9003 pin 4

X-9003 pin 3

There should be no continuity.

X-9001 pin A40

All pins in connector X-9001

There should be no continuity.

X-9001 pin A10

All pins in connector X-9001

There should be no continuity.

A. If there is continuity, there is a short circuit in the intake manifold pressure sensor B-9001 wiring in the engine

harness (EN). Locate and repair the shorted conductor.

B. If there is no continuity, leave connector X-9003 disconnected and continue to Step 5.

5.

Replace the intake manifold pressure sensor B-9001.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is no longer active, return the machine to service.

B. If the fault is still active, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

6.

Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,

or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent

breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.

A. If you find damage or the display indicates other than normal display readings, then repair the damage discov-

ered during the inspection or locate and repair the other than normal display condition and verify that the error

has been resolved.

B. If you do not find damage and the display indicates only normal readings, then erase the fault code and continue

operation.

Wiring harnesses - Electrical schematic sheet 03 - Engine sensors and fuel injection (engine schematics)

(55.100.DP-C.20.E.03)

23

Electrical systems - FAULT CODES

DTC 134-04-Intake manifold pressure sensor voltage is lower than

expected

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the intake manifold pressure sensor B-9001. If the ECU A-9000

determines that the intake manifold pressure sensor B-9001 signal circuit voltage is less than 202.80 mV, this fault

will occur. If this fault is active, the intake manifold pressure value will be frozen at the last valid value for a preliminary

failure or jump to a fixed replacement value of 0.98 bar (14.21 psi) if the failure is validated.

Cause:

The ECU A-9000 has determined that the intake manifold pressure sensor B-9001 signal circuit voltage is less than

202.80 mV.

Possible failure modes:

1. Faulty intake manifold pressure sensor B-9001 wiring, short to ground condition.

2. Faulty intake manifold pressure sensor B-9001, internal failure.

3. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 4.

2.

Check the intake manifold pressure sensor B-9001 wiring in the engine harness (EN) for a short to ground condi-

tion.

Disconnect the engine harness (EN) from the intake manifold pressure sensor B-9001 at connector X-9003.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

From

To

Value

X-9003 pin 4

Chassis ground

There should be no continuity.

X-9003 pin 4

X-9003 pin 1

There should be no continuity.

X-9001 pin A40

All pins in connector X-9001

There should be no continuity.

A. If there is continuity, there is a short circuit in the intake manifold pressure sensor B-9001 wiring in the engine

harness (EN). Locate and repair the shorted conductor.

B. If there is no continuity, leave connector X-9003 disconnected and continue to Step 3.

3.

Replace the intake manifold pressure sensor B-9001.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is no longer active, return the machine to service.

B. If the fault is still active, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

24

Electrical systems - FAULT CODES

DTC 135-03-Fuel temperature sensor voltage is higher than

expected

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the fuel temperature sensor B-9002 signal circuit voltage. If the ECU

A-9000 detects a voltage greater than 4.93 V in the signal circuit, this fault will occur. If this fault is not inhibited by

another fault, the ECU A-9000 will freeze the fuel temperature value to 39.96 °C (103.93 °F).

Cause:

The fuel temperature sensor B-9002 signal circuit voltage is greater than 4.93 V.

Possible failure modes:

1. Faulty fuel temperature sensor B-9002 wiring, short to a voltage source.

2. Faulty fuel temperature sensor B-9002 wiring, open circuit.

3. Faulty fuel temperature sensor B-9002, internal failure.

4. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 6.

2.

Check the fuel temperature sensor B-9002 for an internal failure.

Disconnect the engine harness (EN) from the fuel temperature sensor B-9002 at connector X-9005.

Use a multimeter to measure the resistance of the fuel temperature sensor B-9002 on the sensor pins :

From

To

Value

X-9005 pin 1

X-9005 pin 2

At approximately 20.0 °C (68.0 °F),

there should be between 2351 -

2648 Ω.

NOTE: The fuel temperature sensor B-9002 is a Negative Temperature Coefficient (NTC) thermistor. The thermis-

tor’s conductivity increases with increasing temperature and resistance decreases with increasing temperature.

A. If there is a nominal resistance value, e.g. greater than 100 Ω, leave connector X-9005 disconnected and

continue to Step 3.

B. If there is not a nominal resistance value, e.g. 0 Ω, the fuel temperature sensor B-9002 has failed. Replace

the fuel temperature sensor B-9002.

3.

Check the fuel temperature sensor B-9002 wiring for a short to battery.

With the key in the OFF position, use the a multimeter to perform the following voltage check on the engine harness

(EN) side :

From

To

Value

X-9005 pin 1

Chassis ground

There should be no voltage.

With the key in the ON position, use the a multimeter to perform the following voltage check on the engine harness

(EN) side :

26

Electrical systems - FAULT CODES

From

To

Value

X-9005 pin 1

Chassis ground

There should be less than 5.5 V.

A. If the specified values are measured, leave connector X-9005 disconnected and continue to Step 4.

B. If the specified values are not measured, there is a short to battery or switched battery in the fuel temperature

sensor B-9002 wiring. Use the appropriate service manual, if necessary, to locate and repair the failed con-

ductor.

4.

Check the fuel temperature sensor B-9002 engine harness (EN) wiring for an open circuit condition.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use the a multimeter to perform the following continuity check on the engine

harness (EN) side :

From

To

Value

X-9005 pin 1

X-9001 pin A38

There should be continuity.

X-9005 pin 2

X-9001 pin A23

There should be continuity.

A. If there is continuity, leave connectors X-9005 and X-9001 disconnected and continue to Step 5.

B. If there is no continuity, there is an open circuit in the fuel temperature sensor B-9002 wiring in the engine

harness (EN). Locate and repair the broken conductor.

5.

Check the fuel temperature sensor B-9002 engine harness (EN) wiring for a short circuit condition.

With the key in the OFF position, use the a multimeter to perform the following continuity check on the engine

harness (EN) side :

From

To

Value

X-9001 pin A38

All pins in connector X-9001

There should be no continuity.

A. If there is continuity, there is a short circuit in the fuel temperature sensor B-9002 wiring in the engine harness

(EN). Locate and repair the shorted conductor.

B. If there is no continuity, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

6.

Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,

or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent

breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.

A. If you find damage or the display indicates other than normal display readings, then repair the damage discov-

ered during the inspection or locate and repair the other than normal display condition and verify that the error

has been resolved.

B. If you do not find damage and the display indicates only normal readings, then erase the fault code and continue

operation.

Wiring harnesses - Electrical schematic sheet 03 - Engine sensors and fuel injection (engine schematics)

(55.100.DP-C.20.E.03)

27

Electrical systems - FAULT CODES

DTC 135-04-Fuel temperature sensor voltage is lower than expected

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the fuel temperature sensor B-9002 signal circuit voltage. If the ECU

A-9000 detects a voltage less than 198.00 mV in the signal circuit, this fault will occur. If this fault is not inhibited by

another fault, the ECU A-9000 will freeze the fuel temperature value to 39.96 °C (103.93 °F).

Cause:

The fuel temperature sensor B-9002 signal circuit voltage is less than 198.00 mV.

Possible failure modes:

1. Faulty fuel temperature sensor B-9002 wiring, short to ground condition.

2. Faulty fuel temperature sensor B-9002, internal failure.

3. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 5.

2.

Check the fuel temperature sensor B-9002 for an internal failure.

Disconnect the engine harness (EN) from the fuel temperature sensor B-9002 at connector X-9005.

Use a multimeter to measure the resistance of the fuel temperature sensor B-9002 on the sensor pins :

From

To

Value

X-9005 pin 1

X-9005 pin 2

At approximately 20.0 °C (68.0 °F),

there should be between 2351 -

2648 Ω.

NOTE: The fuel temperature sensor B-9002 is a Negative Temperature Coefficient (NTC) thermistor. The thermis-

tor’s conductivity increases with increasing temperature and resistance decreases with increasing temperature.

A. If there is a nominal resistance value, e.g. greater than 100 Ω, leave connector X-9005 disconnected and

continue to Step 3.

B. If there is not a nominal resistance value, e.g. 0 Ω, the fuel temperature sensor B-9002 has failed. Replace

the fuel temperature sensor B-9002.

3.

Check the fuel temperature sensor B-9002 engine harness (EN) wiring for a short to ground condition.

With the key in the OFF position, use the a multimeter to perform the following continuity checks for a short to

ground condition on the engine harness (EN) side :

From

To

Value

X-9005 pin 1

X-9005 pin 2

There should be no continuity.

X-9005 pin 1

Chassis ground

There should be no continuity.

A. If there is no continuity, leave connector X-9005 disconnected and continue to Step 4.

B. If there is continuity, there is a short to ground in the fuel temperature sensor B-9002 wiring in the engine

harness (EN). Locate and repair the failed conductor.

28

Electrical systems - FAULT CODES

DTC 136-03-Fuel rail pressure sensor voltage is higher than

expected

Control Module : ECU

NOTE: If the rail pressure sensor B-9004 is replaced, it is necessary to perform the Replacement of the Rail Pressure

sensor - Reset ECU Data with the Electronic Service Tool (EST) before you return the machine to service. See

Common rail pressure sensor - Configure - Reset ECU data (Rail pressure sensor) (55.010), if necessary.

Context:

The Engine Control Unit (ECU) A-9000 monitors the rail pressure sensor B-9004. If the ECU A-9000 detects a voltage

greater than 4.90 V in the rail pressure sensor B-9004 signal circuit, this fault will occur.

Cause:

The ECU A-9000 has detected a voltage greater than 4.90 V in the rail pressure sensor B-9004 signal circuit.

Possible failure modes:

1. Faulty rail pressure sensor B-9004 wiring, short to a voltage source.

2. Faulty rail pressure sensor B-9004 wiring, open circuit.

3. Faulty rail pressure sensor B-9004, internal failure.

4. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 6.

2.

Check the rail pressure sensor B-9004 wiring for a short circuit condition.

Disconnect the engine harness (EN) from the rail pressure sensor B-9004 at connector X-9026.

With the key in the OFF position, use a multimeter to perform the following voltage check on the engine harness

(EN) side :

From

To

Value

X-9026 pin 2

Chassis ground

There should be no voltage.

With the key in the ON position, use a multimeter to perform the following voltage check on the engine harness

(EN) side :

From

To

Value

X-9026 pin 2

Chassis ground

There should be less than 5.5 V

A. If the specified values are not measured, there is a short to battery or switched battery in the rail pressure

sensor B-9004 wiring in the engine harness (EN). Locate and repair the broken conductor.

B. If the specified values are measured, leave connector X-9026 disconnected and continue to Step 3.

3.

Check the rail pressure sensor B-9004 engine harness (VE) wiring for an open circuit.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

30

Electrical systems - FAULT CODES

From

To

Value

X-9026 pin 2

X-9001 pin A41

There should be continuity.

X-9026 pin 3

X-9001 pin A11

There should be continuity.

A. If there is no continuity, there is an open circuit in the rail pressure sensor B-9004 engine harness (EN) wiring.

Locate and repair the broken conductor.

B. If there is continuity, leave connectors X-9026 and X-9001 disconnected and continue to Step 4.

4.

Check the rail pressure sensor B-9004 engine harness (EN) wiring for a short to a voltage source.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

From

To

Value

X-9026 pin 2

X-9026 pin 3

There should be no continuity.

X-9001 pin A41

All pins in connector X-9001

There should be no continuity.

A. If there is continuity, there is a short circuit in the rail pressure sensor B-9004 engine harness (EN) wiring.

Locate and repair the shorted conductor.

B. If there is no continuity, leave connector X-9026 disconnected and continue to Step 5.

5.

Replace the rail pressure sensor B-9004.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is no longer active, return the machine to service.

B. If the fault is still active, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

6.

Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,

or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent

breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.

A. If you find damage or the display indicates other than normal display readings, then repair the damage discov-

ered during the inspection or locate and repair the other than normal display condition and verify that the error

has been resolved.

B. If you do not find damage and the display indicates only normal readings, then erase the fault code and continue

operation.

Wiring harnesses - Electrical schematic sheet 03 - Engine sensors and fuel injection (engine schematics)

(55.100.DP-C.20.E.03)

31

Electrical systems - FAULT CODES

DTC 136-04-Fuel rail pressure sensor voltage is lower than expected

Control Module : ECU

NOTE: If the rail pressure sensor B-9004 is replaced, it is necessary to perform the Replacement of the Rail Pressure

sensor - Reset ECU Data with the Electronic Service Tool (EST) before you return the machine to service. See

Common rail pressure sensor - Configure - Reset ECU data (Rail pressure sensor) (55.010), if necessary.

Context:

The Engine Control Unit (ECU) A-9000 monitors the rail pressure sensor B-9004. If the ECU A-9000 detects a voltage

less than 342.20 mV in the rail pressure sensor B-9004 signal circuit, this fault will occur.

Cause:

The ECU A-9000 has detected a voltage less than 342.20 mV in the rail pressure sensor B-9004 signal circuit.

Possible failure modes:

1. Faulty rail pressure sensor B-9004 wiring, short to ground condition.

2. Faulty rail pressure sensor B-9004, internal failure.

3. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 5.

2.

Check the rail pressure sensor B-9004 engine harness (EN) wiring for a short circuit condition.

Disconnect the engine harness (EN) from the rail pressure sensor B-9004 at connector X-9026.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

From

To

Value

X-9026 pin 2

X-9026 pin 1

There should be no continuity.

X-9026 pin 2

Chassis ground

There should be no continuity.

A. If there is continuity, there is a short to ground in the rail pressure sensor B-9004 engine harness (EN) wiring.

Locate and repair the shorted conductor.

B. If there is no continuity, leave connectors X-9026 and X-9001 disconnected and continue to Step 3.

3.

Check the rail pressure sensor B-9004 vehicle harness (VE) wiring for a short to ground condition.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

From

To

Value

X-9001 pin A41

All pins in connector X-9001

There should be no continuity.

A. If there is continuity, there is a short circuit in the rail pressure sensor B-9004 engine harness (EN) wiring.

Locate and repair the broken conductor.

B. If there is no continuity, leave connector X-9026 and continue to Step 4.

32

Electrical systems - FAULT CODES

From

To

Value

X-9039 pin 2

Chassis ground

There should be between 2.4 - 2.6 V.

X-9039 pin 1

Chassis ground

There should be between 2.4 - 2.6 V.

A. If there is between 2.4 - 2.6 V, leave connector X-9039 disconnected and continue to Step 6.

B. If there is not between 2.4 - 2.6 V, continue to Step 5.

5.

Check the crankshaft position sensor B-9007 engine harness (EN) wiring for an open circuit.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity checks for an open circuit

on the engine harness (EN) side :

From

To

Value

X-9039 pin 2

X-9001 pin A44

There should be continuity.

X-9039 pin 1

X-9001 pin A59

There should be continuity.

A. If there is continuity, leave connectors X-9039 and X-9001 disconnected and continue to Step 5.

B. If there is no continuity, there is an open circuit in the crankshaft position sensor B-9007 circuit wiring in the

engine harness (EN). Locate and repair the broken conductor.

6.

Replace the crankshaft position sensor B-9007.

Use the Electronic Service Tool (EST) to verify the status of this fault.

A. If the fault has been resolved, return the machine to service.

B. If the fault has not been resolved, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

7.

Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,

or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent

breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.

A. If you find damage or the display indicates other than normal display readings, then repair the damage discov-

ered during the inspection or locate and repair the other than normal display condition and verify that the error

has been resolved.

B. If you do not find damage and the display indicates only normal readings, then erase the fault code and continue

operation.

Wiring harnesses - Electrical schematic sheet 03 - Engine sensors and fuel injection (engine schematics)

(55.100.DP-C.20.E.03)

39

Electrical systems - FAULT CODES

DTC 141-04-Crankshaft speed sensor pattern is not plausible

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the crankshaft position sensor B-9007 characteristics for angle,

speed determination, signal plausibility, and quality. If the ECU A-9000 detects greater than 80 crankshaft position

signal plausibility errors, this fault will occur.

Cause:

The ECU A-9000 has detected more than 80 crankshaft position signal plausibility errors.

Possible failure modes:

1. Faulty crankshaft position sensor B-9007, not fully seated or loose.

2. Faulty crankshaft tone wheel, damaged or misaligned.

3. Faulty crankshaft position sensor B-9007 wiring, short circuit.

4. Faulty crankshaft position sensor B-9007, internal failure.

5. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 7.

2.

Check the physical integrity of the crankshaft position sensor B-9007. The sensor should be fully seated and

mounted tightly.

Remove the crankshaft position sensor B-9007 and inspect the crankshaft tool wheel. The tone wheel should not

be damaged or loose.

A. If the sensor or tone wheel is damaged or is not mounted/secured properly, repair as necessary.

B. If the sensor or tone wheel is not damaged and is mounted/secured properly, continue to Step 3.

3.

Check the crankshaft position sensor B-9007 wiring for a short to a voltage source.

Disconnect the engine harness (EN) from the crankshaft position sensor B-9007 at connector X-9039.

With the key in the OFF position, use a multimeter to perform the following voltage check on the engine harness

(EN) side :

From

To

Value

X-9039 pin 2

Chassis ground

There should be no voltage.

With the key in the ON position, use a multimeter to perform the following voltage check on the engine harness

(EN) side :

From

To

Value

X-9039 pin 2

Chassis ground

There should be 2.4 - 2.6 V voltage.

A. If there is no voltage, leave connector X-9039 disconnected and continue to Step 4.

B. If there is voltage, there is a short to battery or key switch battery in the crankshaft position sensor B-9007

wiring. Locate and repair the shorted conductor.

40

Electrical systems - FAULT CODES

4.

Check the crankshaft position sensor B-9007 engine harness (EN) wiring for an open circuit.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity checks for an open circuit

on the engine harness (EN) side :

From

To

Value

X-9039 pin 2

X-9001 pin A44

There should be continuity.

X-9039 pin 1

X-9001 pin A59

There should be continuity.

X-9039 pin 3

X-9001 pin A58

There should be continuity.

A. If there is continuity, leave connectors X-9039 and X-9001 disconnected and continue to Step 5.

B. If there is no continuity, there is an open circuit in the crankshaft position sensor B-9007 circuit wiring in the

engine harness (EN). Locate and repair the broken conductor.

5.

Check the crankshaft position sensor B-9007 engine harness (EN) wiring for a short circuit.

With the key in the OFF position, use a multimeter to perform the following continuity checks for a short circuit on

the engine harness (EN) side :

From

To

Value

X-9039 pin 2

Chassis ground

There should be no continuity.

X-9039 pin 2

X-9039 pin 1

There should be no continuity.

X-9039 pin 2

X-9039 pin 3

There should be no continuity.

X-9001 pin A44

All pins in connector X-9001

There should be no continuity.

A. If there is no continuity, leave connector X-9039 disconnected and continue to Step 6.

B. If there is no continuity, there is an open circuit in the crankshaft position sensor B-9007 circuit wiring in the

engine harness (EN). Locate and repair the broken conductor.

6.

Replace the crankshaft position sensor B-9007.

Use the Electronic Service Tool (EST) to verify the status of this fault, DTC 141-Sig - Crankshaft sensor failure.

A. If the fault has been resolved, return the machine to service.

B. If the fault has not been resolved, check the ECU A-9000 for the appropriate software and re-flash, if necessary.

7.

Visually inspect the relevant harnesses and connectors for damage, bent or dislocated pins, corroded terminals,

or broken wires. Verify that the connectors are fully installed. Flex the harnesses involved to reveal intermittent

breaks or shorts in the wiring concerned. Operate the machine while you monitor the display.

A. If you find damage or the display indicates other than normal display readings, then repair the damage discov-

ered during the inspection or locate and repair the other than normal display condition and verify that the error

has been resolved.

B. If you do not find damage and the display indicates only normal readings, then erase the fault code and continue

operation.

Wiring harnesses - Electrical schematic sheet 03 - Engine sensors and fuel injection (engine schematics)

(55.100.DP-C.20.E.03)

41

Electrical systems - FAULT CODES

DTC 143-02-Camshaft speed sensor values are not plausible

Control Module : ECU

Context:

The Engine Control Unit (ECU) A-9000 monitors the camshaft position sensor B-9017 characteristics for angle, speed

determination, signal plausibility, and quality. If the ECU A-9000 determines that no camshaft edge is detected for at

least four crankshaft revolutions, this fault will occur.

Cause:

The ECU A-9000 has detected no camshaft edge for at least four crankshaft revolutions.

Possible failure modes:

1. Faulty camshaft position sensor B-9017, wiring.

2. Faulty camshaft position sensor B-9017, improperly seated or mounted.

3. Faulty camshaft position sensor B-9017, internal failure.

4. Faulty ECU A-9000, software.

Solution:

1.

Verify fault is present and active.

Use the Electronic Service Tool (EST) to check the status of this fault.

A. If the fault is present and active, continue with Step 2.

B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.

Continue with Step 5.

2.

Check the physical integrity of the camshaft speed sensor B-9017. The sensor should be fully seated and mounted

tightly.

A. If the sensor is not mounted/secured properly, repair as necessary.

B. If the sensor is not damaged and is mounted/secured properly, continue to Step 3.

3.

Check the camshaft position sensor B-9017 wiring in the engine harness (EN) for an open circuit.

Disconnect the engine harness (EN) from the camshaft position sensor at connector X-9008.

Disconnect the engine harness (EN) from the ECU A-9000 at connector X-9001.

With the key in the OFF position, use a multimeter to perform the following continuity check on the engine harness

(EN) side :

From

To

Value

X-9008 pin 1

X-9001 pin A28

There should be continuity.

X-9008 pin 2

X-9001 pin A14

There should be continuity.

X-9008 pin 3

X-9001 pin A13

There should be continuity.

X-9008 pin 2

Chassis ground

There should be no continuity.

X-9001 pin A14

All other pins on connector X-9001

There should be no continuity.

With the key in the ON position, use a multimeter to perform the following voltage check on the engine harness

(EN) side :

From

To

Value

X-9001 pin A14

Chassis ground

There should be no voltage.

A. If there is continuity, leave connectors X-9008 and X-9001 disconnected and continue to Step 4.

42

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