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Harley Davidson 2008 Touring Models. Electrical Diagnostics Manual - page 14

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em00099

Electronic Control Module

[78A] [78B]

Sensor

[90A]

A B

[90B]

A B

Engine temperature sensor

PK/Y

5V sensor ground-1

BK/W

Figure 4-40. ET Sensor Circuit

Table 4-31. Wire Harness Connectors

NO.

DESCRIPTION

TYPE

LOCATION

[78]

Electronic Control Module (ECM)

73-place Delphi

Under seat

[90]

Engine

Temperature (ET) sensor

2-place Delphi

Back of front cylinder (left side)

4-86 2008 Touring Diagnostics: Engine Management

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ET Sensor: DTC P0117, P0118 (Part 1 of 2)

Connect Breakout Box to connector [78B]

leaving ECM disconnected. With engine ambient

temperature between 60-90^o F (16-32^o C),

use a DVOM to measure resistance across

terminals “51” and “61” on Breakout Box. If

engine is warm, refer to Table 4-30.

Is resistance between 2.0k ohms and 5.0k ohms?

YES

STOP

Connect ECM to Breakout Box.

Perform 4.8 WIGGLE TEST to check

Go to ET Sensor: DTC

for intermittents.

P0117, P0118

Intermittents present?

(Part 2 of 2).

YES

Disconnect ET sensor connector [90].

While wiggling harness, perform

Turn ignition ON. Using a DVOM, measure

steps marked by BOLD ASTERISKS

the voltage between terminal “51” (positive) and

under ET Sensor Diagnostics (Part 2 of

terminal “61” (negative) on Breakout Box.

2). Repair as necessary.

Is voltage approximately 5.0 volts?

YES

Less than 4.7 volts.

Greater than 5.3 volts.

Replace ET Sensor, clear codes

With ET Sensor disconnected,

Unplug ECM leaving Breakout Box connected

disconnect ECM connector [78B].

and road test.

at vehicle harness. Measure voltage between

Measure resistance between terminal

Did check engine lamp illuminate

terminal “51” and terminal “61”.

“51” and terminal “61”.

and set DTC P0117 or P0118?

Is measured voltage, 0.0 volt?

Is resistance less than 1 megohm?

YES

Examine ET sensor

Install original

Replace ECM.

signal wire (PK/Y) for

Repair short to

Replace ECM.

Reprogram and

ET Sensor,

short to voltage and

System

ground on

Reprogram and

learn password.

replace ECM, perform

repair.

OK.

(PK/Y) wire.

learn password.

password learning

and road test.

Clear codes using speedometer self diagnostics. See

4.6 SPEEDOMETER SELF DIAGNOSTICS. Confirm

proper operation with no check engine lamp.

At some point in the flow chart you may be instructed to jump directly to a the box with

the bold asterisk. Disregard the asterisk (but not the instruction box) if your normal

progression through the chart brings you to this location.

fc01034_en

2008 Touring Diagnostics: Engine Management 4-87

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ET Sensor: DTC P0117, P0118 (Part 2 of 2)

Continued from ET Sensor: DTC P0117,

P0118 (Part 1 of 2).

Disconnect ET sensor connector [90B]

and examine for damage.

Is the connector OK?

YES

Using a DVOM, measure the resistance

between ET sensor connector [90B] terminal

Repair

“A” and ECM terminal “51” on Breakout Box.

connector.

Is resistance less than 1.0 ohm?

YES

Using a DVOM, measure the resistance

Examine (PK/Y) wire in

between ET sensor connector [90B] terminal

harness for open circuit

“B” and ECM terminal “61” on Breakout Box.

and repair.

Is resistance less than 1.0 ohm?

YES

Using a DVOM, measure the resistance

Examine (BK/W) wire in

between ECM terminal “51” and terminal

harness for open circuit

“73” on Breakout Box.

and repair.

Is resistance greater than 1.0 megohm?

YES

Using a DVOM, measure the resistance

Examine (PK/Y) and

between ECM terminal “51” on Breakout Box

(BK/W) wires in harness

and ground.

for short between these

Is resistance greater than 1.0 megohm?

two circuits and repair.

YES

Remove ET Sensor and measure resistance

across the terminals of the ET Sensor directly.

Examine harness for

With sensor ambient temperature between 60-

short to ground and

90^o F (16-32^o C), is resistance between 2.0k

repair.

ohms and 5.0k ohms?

YES

Perform 4.8 WIGGLE TEST on steps

marked with a BOLD ASTERISK above

Replace

to locate intermittents. Repair as

ET Sensor.

necessary.

Clear codes using speedometer self diagnostics. See 4.6 SPEEDOMETER

SELF DIAGNOSTICS. Confirm proper operation with no check engine lamp.

At some point in the flow chart you may be instructed to jump directly to a the box

with the bold asterisk. Disregard the asterisk (but not the instruction box) if your

normal progression through the chart brings you to this location.

fc01035_en

4-88 2008 Touring Diagnostics: Engine Management

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DTC P0120,

P0122, P0123, P0220, P0222, P0223

4.20

GENERAL

ed01264

See Figure 4-41. A dual Throttle Position Sensor (TPS) is

integrated into the Throttle Control Actuator (TCA), mounted

to the Induction Module.

Within the TCA, a set of potentiometers are designated as

Throttle Position Sensors (TPS1 and TPS2). The ECM drives

the motor in the TCA to open and close the throttle plate based

on the signals from the twist grip sensor. The Throttle Position

Sensors (TPS1 and TPS2) send signals back to the ECM based

on throttle plate position to verify the throttle plate movement.

The ECM supplies a 5.0 volt signal from terminal "50" of con-

nector [78] to TPS1 and TPS2. The signals from TPS1 and

TPS2 are sent back to the ECM connector [78] terminal "37"

and terminal "36" vary in voltage according to actual throttle

plate position.

The two throttle position sensors work opposite each other.

When one sensor reads high, the other reads low. The sum of

TPS1 and TPS2 signals should measure around 5.0 volts.

Refer to Table 4-32 for defect codes associated with TPS1 and

TPS2 of the TCA. See Figure 4-42 for TCA (TPS1 & TPS2)

circuitry diagram.

1. TCA

Table 4-32. Code Description

2. Induction Module

DTC

DESCRIPTION

Figure 4-41. Throttle Control Actuator (TCA) Location

P0120

TPS1 range error

P0122

TPS1 low/open

DIAGNOSTICS

P0123

TPS1 high

PART NUMBER

TOOL NAME

P0220

TPS2 range error

HD-41404-B

HARNESS CONNECTOR TEST KIT

P0222

TPS2 low/open

HD-48637

BREAKOUT BOX

P0223

TPS2 high

Diagnostic Tips

Check the following conditions:

•

Poor connection: Inspect ECM and harness connector

[78] for backed out terminals, improper mating, broken

locks, improperly formed or damaged terminals, poor ter-

minal-to-wire connection and damaged harness.

•

Perform 4.8 WIGGLE TEST to locate intermittents: If

connections and harness check out OK, use a DVOM to

check the TPS voltage reading while moving related con-

nectors and wiring harnesses. If the failure is induced,

then TPS voltage will change.

•

An intermittent may be caused by poor connection, rubbed

through wire insulation or a wire broken within the wire

insulation.

Diagnostic Notes

Each reference number below correlates to a circled number

on the flow chart(s).

1. Connect BREAKOUT BOX (Part No. HD-48637) between

wire harness and ECM. See 4.7 BREAKOUT BOX: EFI.

2008 Touring Diagnostics: Engine Management 4-89

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2. Use HARNESS CONNECTOR TEST KIT (Part No. HD-

cords.

41404-B), purple pin probes, socket probes and patch

em00100

Twist Grip Sensor

[224A]

6 5 4 3 2 1

Throttle

6 5 4 3 2 1

Control Actuator

[224B]

[204A]

[211A]

6 5 4 3 2 1

[204B]

[211B]

[78A]

[78B]

ECM

Throttle control actuator HI

BK/O

Throttle control actuator LO

BK/PK

Throttle position sensor-2

BN/R

Throttle position sensor-1

BN/V

Twist grip sensor-2

V/Y

Vehicle speed input

W/GN

5V sensor power-1

BN/O

Jiffy stand sensor

GN/BN

[65B] [65A]

Twist grip sensor-1

BE/GN

5V sensor ground-1

BK/W

BN/O

Vehicle

5V sensor ground-2

BK/GY

W/GN

Speed

Vehicle speed ground

BK/Y

Sensor

5V sensor power-2

R/W

Ground

BK/GN

Rear

Clean

Ground

[133B]

1 2 3

Jiffy Stand

Sensor

(HDI only)

Figure 4-42. TCA Circuit

4-90 2008 Touring Diagnostics: Engine Management

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Table 4-33. Wire Harness Connectors

NO.

DESCRIPTION

TYPE

LOCATION

[65]

Vehicle Speed Sensor (VSS)

3-place Delphi

Top of transmission case (under

starter)

[78]

Electronic Control Module (ECM)

73-place Delphi

Under seat

[133]

Jiffy Stand Sensor

3-place Molex (black)

Domestic (not used): Electrical caddie

bottom of lower frame crossmember

HDI: Electrical caddie at bottom of

lower frame crossmember

[204]

wist Grip Sensor (TGS)

6-place Molex (black)

Inner fairing - right radio support

bracket

[211]

Throttle Control Actuator (TCA)

6-place Molex

Throttle body

2008 Touring Diagnostics: Engine Management 4-91

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DTC P0120, P0220

Clear the DTCs. Start the engine.

Open and close throttle.

Does DTC P0120 or P0220 reset?

YES

Turn off the engine. Install Breakout Box (HD-48637).

Turn ignition switch on with the Engine Stop Switch in

Refer to

the RUN position. With DVOM measure the voltage on

Diagnostic

terminal “36” and “37” (+) and terminal “61” (-) of the

Tips.

Breakout Box.

Is combined voltage approximately 5V?

YES

Hold throttle wide open. Measure

Hold throttle wide open. Measure voltage

voltage on terminal “36” and “37” of

on terminal “36” and “37” of Breakout Box.

Breakout Box.

Is combined voltage approximately 5V?

YES

Test voltage on teminal “36” of Breakout

Box. Slowly push throttle plate open.

Replace Throttle

Test for continuity to ground at

Measure voltage at terminal

Does voltage gradually decrease as the

Control Actuator.

terminal “1” of connector [211B].

“50” of Breakout Box.

throttle plate is opened?

Is Continuity present?

Is voltage approximately 5V?

YES

Test voltage on terminal “37” of

Replace Throttle

Repair

Replace ECM.

Replace

Repair high

Breakout Box. Slowly push

Control Actuator.

open.

Reprogram and

Throttle

resistance or open.

throttle plate open.

relearn password.

Control

Does voltage gradually increase

Actuator.

as the throttle plate is opened?

YES

Clear codes using speedometer self

diagnostics. See 4.6 SPEEDOMETER

Replace ECM.

fc01176_en

Replace Throttle

SELF DIAGNOSTICS. Confirm proper

Reprogram and

operation with no check engine lamp.

Control Actuator.

relearn password.

4-92 2008 Touring Diagnostics: Engine Management

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DTC P0120, P0122, P0220, P0222 (Part 1 of 2)

Clear the DTCs. Start the engine. Quickly

fully open and close the throttle.

Did both DTC P0122 and P0222 reset?

YES

Install Breakout Box (HD-48637). Turn

STOP

Ignition Switch on with the Engine Stop

Switch in the RUN position. Test for

voltage on Breakout Box terminal “50”.

Is voltage approximately 5V?

Go to DTC P0122, P0222

(Part 2 of 2).

YES

Test Breakout Box terminal

Turn Ignition Switch OFF. Test

“61” for continuity to ground.

terminal “50” circuit (BN/O) for

Is continuity present?

a short to ground.

Short to ground present?

YES

Disconnect the TCA connector [211]. Turn

Repair short to

Ignition switch on with the Engine Stop

ground in (BN/O)

Replace ECM.

Switch in the RUN position. Test for

Replace ECM.

wire.

voltage on terminal “5” of connector [211B].

Is voltage approximately 5V?

YES

Test terminal “1” of

connector [211B] for

Repair open

continuity to ground.

in (BN/O) wire.

Continuity present?

YES

fc01177_en

Repair open

Replace TCA.

in (BK/W) wire.

2008 Touring Diagnostics: Engine Management 4-93

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DTC P0120, P0122, P0220, P0222 (Part 2 of 2)

Continued from DTC P0122, P0222 (Part 1 of 2).

Did either one of the DTC’s reset?

YES

Did DTC P0122

Refer to

reset?

Diagnostic Tips.

YES

Install Breakout Box (HD-

48637). Turn Ignition Switch on

with the Engine Stop Switch in

the RUN position. Test for

voltage on terminal “37”.

voltage on terminal “36”.

Is voltage above 0.4V?

Is voltage at least 4.8V?

YES

Disconnect Connector

Slowly push the

[211]. Test for

Slowly push the

throttle plate open.

continuity between

throttle plate open.

Does the voltage

terminal “37” of the

terminal “36” of the

Does the voltage

steadily decrease but

Breakout Box and

steadily increase to

does not drop below

terminal “6” of

terminal “4” of

at least 4.8V?

0.4V at wide open

connector [211B].

throttle?

Is continuity present?

YES

Replace

ECM.

TCA.

Replace

Repair

Replace

Repair

TCA.

ECM.

open.

TCA.

open.

fc01036_en

4-94 2008 Touring Diagnostics: Engine Management

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DTC P0123, P0223

Clear the DTCs. Start the engine. Quickly

fully open and close the throttle.

Did both DTC P0123 and P0223 reset?

YES

Disconnect connector [211].

Clear the DTCs. Turn the

Ignition Switch on with the

Did either one of

Engine Stop Switch in the

the DTCs reset?

RUN position.

Did the codes reset?

YES

Replace ECM

Refer to

Replace TCA.

Did DTC P0123

reprogram and learn

Diagnostic Tips.

reset?

password.

YES

Install Breakout Box (HD-

48637). Turn Ignition Switch on

Install Breakout Box (HD-48637).

with the Engine Stop Switch in

Turn Ignition Switch on with the

the RUN position. Disconnect

Engine Stop Switch in the RUN

connector [211]. Test for voltage

position. Disconnect connector [211].

on terminal “37” on Breakout

Test for voltage on terminal “36”.

Box.

Is voltage above 4.8V?

YES

Disconnect ECM. Test

Disconnect ECM. Test for

for voltage on terminal

Replace

voltage on terminal “37” of

Replace

“36” of Breakout Box.

TCA.

Breakout Box.

TCA.

Is voltage above 4.8V?

YES

Repair short

Replace

to voltage on

ECM.

(BN/V) wire.

(BN/R) wire.

fc01037_en

2008 Touring Diagnostics: Engine Management 4-95

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DTC P0131,

P0132, P0134, P0151, P0152, P0154

4.21

GENERAL

DIAGNOSTICS

Oxygen Sensor

PART NUMBER

TOOL NAME

See Figure 4-43. The Oxygen (O₂) Sensor provides a signal

HD-48637

BREAKOUT BOX

to the ECM which indicates whether the engine is running rich

Diagnostic Tips

or lean.

DTCs for the O₂ sensor may be seen during the vehicle break-

•

DTC P0131 (front) or P0151 (rear) is set when the ECM

detects an excessively lean condition for a specified length

in period. The O₂ sensor diagnostic codes will not illuminate

of time. DTCs may also set if O₂ sensor fails.

the check engine lamp for current or historic codes and will

only be indicated by Digital Technician or speedometer self

•

DTC P0132 (front) or P0152 (rear) is set when the ECM

diagnostics. If the diagnostic codes are reported during the

detects an excessively rich condition for a specified length

break-in period, clear or ignore the codes until the break-in

of time. DTCs may also set if O₂ sensor fails.

period is completed. All historic O₂ sensor diagnostic codes

•

DTC P0134 is set when the front O₂ sensor circuit is open

are to be ignored and cleared.

or sensor is too cold to respond. A DTC P0154 is set when

The DVOM displays the signal from the O₂ sensor in volts. This

the rear O₂ sensor circuit is open or sensor is too cold to

voltage will have an average value tending towards lean, rich

respond.

or ideal value depending on operating temperature of the

engine, engine speed and throttle position. An open/short to

When the air/fuel mixture is ideal, approximately 14.6 parts air

voltage or short to ground in the (PK/O) wire (front) and

to 1 part fuel, the voltage will be approximately 0.45V.

(PK/GN) wire (rear) will cause the engine to run rich (short to

ground) or lean (short to voltage) until fault is detected. Once

Table 4-34. Code Description

fault is detected, vehicle will run in open loop.

DTC

DESCRIPTION

Check for the following conditions:

P0131

Front O₂

sensor low or engine running lean

•

Poor connection: Inspect the ECM harness connector

P0132

Engine running rich

[78], fuel injector connectors [84, 85] and O₂ sensor con-

nector wiring for backed out terminals, improper mating,

P0134

Front O₂

sensor open/not responding/high

broken locks, improperly formed or damaged terminals,

P0151

Rear O₂

sensor low or engine running lean

poor terminal-to-wire connection and damaged harnesses.

P0152

Engine running rich

•

Dirty/stuck open injectors: The motorcycle may run lean

P0154

Rear O₂

sensor open/not responding/high

(dirty/clogged injectors) or rich (stuck open injectors) if

there are injector problems. This could also cause poor

fuel economy and performance.

ed02059

•

Loose oxygen sensor: If the O₂ sensor is loose, engine

performance may be affected. This could also show up

as a slow changing O₂ sensor voltage.

•

Loose/leaking exhaust: This can cause a poor ground

connection for the sensor or allow fresh air into the exhaust

system. If fresh air enters exhaust system, the O₂ sensor

will read a lean condition, causing the system to go rich.

•

Engine misfire: See 4.16 MISFIRE AT IDLE OR UNDER

LOAD.

Diagnostic Notes

Each reference number below correlates to a circled number

on the flow chart(s).

1. Connect a BREAKOUT BOX (Part No. HD-48637) between

Figure 4-43. Oxygen Sensor

EFI wire harness and ECM before measuring voltage. See

4.7 BREAKOUT BOX: EFI.

5 volts is typical for a cold engine. Once the O₂ sensors

are up to operating temperature, typical voltage is 0.45

volt.

3. See Intake Leak Test in the Service Manual.

4-96 2008 Touring Diagnostics: Engine Management

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em00101

[78A]

[78B]

Electronic Control Module

Rear 02 Sensor

PK/GN

5V Sensor Ground-1

BK/W

Front 02 Sensor

PK/O

[137B]

[138B]

1 2

Rear

Front

O₂ Sensor

Figure 4-44. Oxygen Sensor Circuit Diagram

2008 Touring Diagnostics: Engine Management 4-97

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Table 4-35. Wire Harness Connectors

NO.

DESCRIPTION

TYPE

LOCATION

[78]

Electronic Control Module (ECM)

73-place Delphi

Under seat

[137]

sensor rear exhaust header

2-place Amp (T

yco)

Under chrome starter cover

[138]

sensor front exhaust header

2-place Amp (Tyco)

Back of cross brace between front

frame downtubes (left side)

4-98 2008 Touring Diagnostics: Engine Management

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O2 Sensor: DTC P0131, P0132, P0134, P0151, P0152, P0154 (Part 1 of 3)

Disconnect O2 Sensor from harness. Connect DVOM to terminal “66” (front, +)

and terminal “61” (-), terminal “46” (rear, +) and terminal “61” (-) of connector [78].

Turn Ignition Switch to IGNITION position. Observe O2 sensor voltage.

Is it approximately 5.0 volts?

NO.

YES

0.0 volt.

Greater than 5.0 volts.

Install Breakout Box (HD-48637) leaving

Install Breakout Box (HD-48637)

ECM [78] disconnected from the Breakout

STOP

leaving ECM [78] disconnected

Box. Measure continuity to ground on

from the Breakout Box.

terminal “66” (front) or terminal “46” (rear).

Is voltage present?

Is continuity present?

Go to O2 Sensor:

P0131, P0132, P0134,

P0151, P0152, P0154

YES

(Part 2 of 3).

YES

Inspect (PK/O) (front)

Locate and repair

and/or (PK/GN) (rear)

short to ground on

wire for short to

Replace ECM.

(PK/O) (front) and/or

voltage and repair.

(PK/GN) (rear) wire.

Clear DTCs using speedometer self diagnostics.

See 4.6 SPEEDOMETER SELF DIAGNOSTICS

fc01038_en

Confirm proper operation with no check engine lamp.

2008 Touring Diagnostics: Engine Management 4-99

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O2 Sensor: DTC P0131, P0132, P0134, P0151, P0152, P0154 (Part 2 of 3)

Continued from O2 Sensor: P0131, P0132, P0134, P0151, P0152, P0154

(Part 1 of 3).

Turn Ignition Switch OFF and reconnect O2 sensor. Turn Ignition Switch to

IGNITION position and start engine. Allow engine to reach operating

temperature. With engine idling, does voltage at terminal “66” (+) and

terminal “61” (-) (front) and terminal “46” (+) and terminal “61” (-) (rear)

quickly fluctuate between 0.0 and 1.0 volt?

YES

Slow or no change.

0.0-0.4 volt.

0.6-1.0 volt.

Check continuity between

STOP

Perform fuel pressure test.

terminal “66” [78] (front) and

See 4.15 FUEL

terminal “1” [138] (front) or

PRESSURE TEST.

Terminal “46” [78]

Go to O2 Sensor:

Pressure too low?

Pressure too high?

(rear) and Terminal “1” [137]

P0131, P0132, P0134,

(rear). Continuity present?

P0151, P0152, P0154

(Part 3 of 3).

YES

Repair low pressure

Check for restricted

problem. See

Fuel Filter or Fuel

Repair open on

Check for

4.15 FUEL

Line. Restriction

(PK/O) (front)

injectors stuck

Replace O2

PRESSURE TEST.

present?

and/or (PK/GN)

Replace Fuel

open. See

Sensor.

(rear) wire.

Pressure Regulator.

4.22 DTC P0261,

P0262, P0263,

YES

P0264. Retest.

Check for air leaks

Replace Fuel

at induction

Line or Fuel

module.

Filter.

Air leak present?

Clear DTCs using speedometer self diagnostics.

See 4.6 SPEEDOMETER SELF DIAGNOSTICS.

Confirm proper operation with no check engine lamp.

YES

Fuel Injectors may

Repair.

fc01039_en

be dirty.

4-100 2008 Touring Diagnostics: Engine Management

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O2 Sensor: DTC P0131, P0132, P0134, P0151, P0152, P0154 (Part 3 of 3)

Continued from O2 Sensor: P0131, P0132,

P0134, P0151, P0152, P0154 (Part 2 of 3).

Check for intermittents by performing wiggle test.

See 4.8 WIGGLE TEST.

Intermittents present?

YES

Replace O2 Sensor.

Clear codes and road test.

Repair

Check for DTCs. Did O2 Sensor set

as necessary.

a P0131, P0132, P0134, P0151,

P0152 or P0154?

YES

Install original O2 Sensor

System

and replace ECM.

now OK.

Road test again to verify.

Clear DTCs using speedometer self diagnostics.

See 4.6 SPEEDOMETER SELF DIAGNOSTICS.

fc01040_en

Confirm proper operation with no check engine lamp.

2008 Touring Diagnostics: Engine Management 4-101

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DTC P0261,

P0262, P0263, P0264

4.22

1. See Service Manual for all service information.

GENERAL

2. Use FUEL INJECTOR TEST LAMP (Part No. HD-34730-

Fuel Injectors

2C). See Figure 4-45.

The fuel injectors are solenoids that allow pressurized fuel into

3. Use HARNESS CONNECTOR TEST KIT (Part No. HD-

the intake tract. The injectors are timed to the engine cycle and

41404-B), purple pin probe and patch cord.

triggered sequentially. The power for the injectors comes from

the system relay. The system relay also provides power for

4. Connect a BREAKOUT BOX (Part No. HD-48637) between

the fuel pump and the ignition coil. The ECM provides the path

EFI wire harness and ECM. See 4.7 BREAKOUT BOX:

to ground to trigger the fuel injectors.

EFI.

NOTE

ECM fuse and system relay failures or wiring harness problems

ed02060

will cause 12 volt power to be lost to both fuel injectors, ignition

coils and fuel pump.

Table 4-36. Code Description

DTC

DESCRIPTION

P0261

Front injector open/low

P0262

Front injector high

P0263

Rear injector open/low

P0264

Rear injector high

DIAGNOSTICS

PART NUMBER

TOOL NAME

Figure 4-45. Fuel Injector Test Lamp (Part No. HD-34730-2C)

HD-34730-2C

FUEL INJECTOR TEST LAMP

HD-41404-B

HARNESS CONNECTOR TEST KIT

HD-48637

BREAKOUT BOX

Diagnostic Notes

Each reference number below correlates to a circled number

on the flow chart(s).

4-102 2008 Touring Diagnostics: Engine Management

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em00095

Data Link

Fuel

ABCD

[141A]

1 2

3 4

Pump

[91A]

ABCD

[141B]

(GY)

Fuel Pump

Assembly in Tank

[83B] [83A]

Fuel Tank

Ignition Coil

Harness

Y/GN

Power

1234

[13B]

GY/BE

Ion sense

1234

[13A]

Y/BE

Coil rear

BE/O

Coil front

Electronic

Control

Module

[78A] [78B]

Fuel Pump

30(3)

87(5)

Fuse

BE/GY

Y/GN

MAXIFUSE

86(1)

85(2)

40 Amp

W/BK

GN/O

15 Amp

Exhaust actuator

V/O

To fuel

Rear injector

GN/GY

System

[5B]

gauge

Relay

System relay enable

GN/O

(+)

(-)

Front injector

W/Y

ECM

Fuse

BE/GY

Ion sense

GY/BE

Battery

15 Amp

[84B] [84A]

Y/GN

Front

Exhaust feedback

V/BE

Ignition

[33B]

W/Y

Injector

Fuse

[85B] [85A]

R/GY

15 Amp

R/BK

Y/GN

Rear

Ignition

GN/GY

Injector

Switch

[33A]

12V power

Y/GN

R/BK

Rear coil

Y/BE

Engine

Front coil

BE/O

Control

Fuse

15 Amp

Serial data

LGN/V

[1A]

Main

12V battery

BE/GY

Harness

12V stop switch

W/BK

[1B]

Ground

BK/GN

Rear

Clean

Ground

Right

[22B]

3 4

[179B]

Hand

[22A]

Controls

Active

Exhaust

(HDI only)

Engine Stop

Switch

Figure 4-46. Fuel Injector Circuit

2008 Touring Diagnostics: Engine Management 4-103

HOME

Table 4-37. Wire Harness Connectors

NO.

DESCRIPTION

TYPE

LOCATION

[1]

Main to interconnect harness

16-place Molex (black)

Inner fairing (right radio support

bracket)

[5]

MAXIFUSE

2-place Packard

Under left side cover

[13]

Fuel tank harness

4-place Multilock

Behind fuel tank (under seat)

[22]

Right handlebar switches

12-place Molex (black)

Inner fairing (fork stem nut lock plate)

[33]

Ignition switch

3-place Packard

Inner fairing (under radio)

[65]

Vehicle Speed Sensor (VSS)

3-place Delphi

Top of transmission case (under

starter)

[78]

Electronic Control Module (ECM)

73-place Delphi

Under seat

[79]

Crankshaft Position (CKP) sensor

2-place Mini-Deutsch

Electrical caddie at bottom of lower

frame crossmember

[80]

emperature Manifold Absolute Pres-

4-place Delphi

Top of induction module

sure (TMAP) sensor

[83]

Ignition coil

4-place Delphi

Below fuel tank (left side)

[84]

Front injector

2-place Delphi

Below fuel tank (left side)

[85]

Rear injector

2-place Delphi

Below fuel tank (left side)

[90]

Engine

Temperature (ET) sensor

2-place Delphi

Back of front cylinder (left side)

[91]

Data link connector

4-place Deutsch

Under left side cover

[95]

Purge solenoid

2-place Delphi

Below fuel tank (left side)

[121]

Rear brake light switch

Spade terminal

Bottom of rear frame downtub (right

side)

[133]

Jiffy Stand Sensor

3-place Molex (black)

Domestic (not used): Electrical caddie

bottom of lower crossmember

HDI: Electrical caddie at bottom of

lower frame crossmember

[137]

sensor rear exhaust header

2-place Amp (T

yco)

Under chrome starter cover

[138]

sensor front exhaust header

2-place Amp (Tyco)

Back of cross brace front frame down-

tubes (left side)

[141]

Fuel pump and fuel level sender

4-place Packard

Front right crankcase

[179]

Active exhaust actuator

5-place Amp (Tyco)

Domestic (not used): Under right side

cover

HDI: Under right side cover (behind

electrical bracket)

[204]

wist Grip Sensor (TGS)

6-place Amp (T

yco)

Throttle control-handle bar (right side)

[211]

Throttle Control Actuator (TCA) and

6-place Molex

Right side of engine (induction module)

Throttle Position (TP) sensor

4-104 2008 Touring Diagnostics: Engine Management

HOME

Fuel Injectors: DTC P0261, P0262, P0263, P0264 (Part 1 of 3)

Is wire bail on connector securely

attached to the Fuel Injector?

YES

Using Fuel Injector Test

Lamp (Part No. HD-34730-

Reconnect.

2C) crank engine.

Does test lamp flash?

YES

Check terminal “A” (Y/GN) wire

Recheck connections.

on injector connector to ground.

Perform 4.8 WIGGLE

Voltage equivalent to Battery

TEST to check for intermittents.

voltage for 2 seconds after

Intermittents present?

IGNITION?

YES

Check for 12 volts at terminal “87”

Measure resistance of

of System Relay during first 2

suspect injector across

STOP

seconds after IGNITION.

Repair

Correct voltage present?

injector terminals.

intermittent.

NOTE:

Resistance

Go to Fuel Injectors: DTC

Depending on relay used relay

10.0-25.0 ohms?

P0261, P0262, P0263,

socket terminal could be shown

P0264 (Part 2 of 3).

as “5” or “4C”.

YES

Check for loose

YES

Replace

or corroded terminals

injector.

in harness.

System Relay OK. Measure

resistance between terminal “87”

of System Relay and terminal “A”

STOP

(Y/GN) wire at injector connector.

Resistance less than 0.5 ohm?

NOTE:

Go to Fuel Injectors: DTC

Clear codes using speedometer self diagnostics.

Depending on relay used relay

P0261, P0262, P0263,

See 4.6 SPEEDOMETER SELF DIAGNOSTICS.

socket terminal could be shown

P0264 (Part 3 of 3).

Confirm proper operation with no check engine lamp.

as “5” or “4C”.

YES

Perform 4.8 WIGGLE

Find and repair

TEST to check for intermittents.

bad connection

Repair as necessary.

or open wire.

fc01041_en

2008 Touring Diagnostics: Engine Management 4-105

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