Harley Davidson 2011 Touring Models. Electrical Diagnostic Manual - page 17

2. ET Sensor Signal Wire Open Test

Turn IGN OFF.

Connect BREAKOUT BOX (Part No. HD-48637) to wiring
harness [78B], leaving ECM [78A] disconnected. See

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for continuity between ET
sensor [90B] terminal A (PK/Y) and breakout box terminal
51.

Is continuity present?

Yes.

No. Repair open circuit in the (PK/Y) wire.

3. ET Sensor Open Ground Wire Test

Test for continuity between ET sensor [90B] terminal B
(BK/W) and breakout box terminal 61.

Is continuity present?

Yes.

No. Repair open in (BK/W) wire.

4. ET Sensor Signal Wire Shorted to Power
Test

Test for continuity voltage between breakout box terminals
51 and 73.

Is voltage present?

Yes. Repair short to voltage in the (PK/Y) wire. Verify
ET sensor resistance value and if incorrect replace
ET sensor. See the service manual.

No.

5. ET Sensor Resistance Test

Measure the resistance of the ET sensor at ambient room
temperature.

Is resistance reading between 900-10,000 Ohms?

Yes. Replace the ECM. See the service manual.

No. Replace the ET sensor. See the service manual.

1.3 DIAGNOSTICS AND TROUBLESHOOTING,

2011 Touring Diagnostics: Engine Management 6-15

6.6

DTC P0120, P0122, P0123, P0220, P0222, P0223

DESCRIPTION AND OPERATION

See

Figure 6-7

. A dual TPS is integrated into the TCA, mounted

to the induction module.

Within the TCA, a set of potentiometers are designated as TPS
(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 TPS (TPS1 and TPS2) send signals
back to the ECM based on throttle plate position to verify the
throttle plate movement.

The ECM supplies a 5.0V signal from terminal 50 of [78] to
TPS1 and TPS2. The signals from TPS1 and TPS2 are sent
back to the ECM [78] terminals 37 and 36 and vary in voltage
according to actual throttle plate position.

The two TP sensors work opposite each other. When one
sensor reads high, the other reads low. The sum of TPS1 and
TPS2 signals should measure around 5.0V.

See

Figure 6-1

for TCA (TPS1 and TPS2) circuitry diagram.

Refer to

Table 6-12

for DTCs associated with TPS1 and TPS2

of the TCA.

Table 6-12. Code Description

DESCRIPTION

DTC

TPS1 range error

P0120

TPS1 low/open

P0122

TPS1 high

P0123

TPS2 range error

P0220

TPS2 low/open

P0222

TPS2 high

P0223

ed01264

TCA

Induction module

Figure 6-7. Throttle Control Actuator (TCA) Location

NOTE

The TMAP and TGS are both connected to the same reference
line (+5V REF). If the line goes to ground or open, multiple
trouble codes will be set (DTCs P0107, P0108 and P0122,
P0123, P1501 or P1502). Start with the highest priority DTC.
Refer to

Table 2-1

Check for the following conditions:

•

Poor connection: Inspect ECM harness connector [78B]
for backed out terminals, improper mating, inoperative
locks, improperly formed or damaged terminals, poor ter-
minal-to-wire connection and damaged harness.

•

Perform

Wiggle Test

to locate intermittents: If connections and

harness check out OK, monitor TPS voltage using a mul-
timeter while moving related connectors and wiring har-
ness. If the failure is induced, the TPS voltage will change.

•

An intermittent may be caused by poor connection, rubbed
through wire insulation or an inoperative wire within the
wire insulation.

•

A faulty sensor can negatively affect the signal voltage of
the other sensors sharing the same 5V reference. If the
wiring passes the following tests, disconnect one sensor
at a time on the 5V reference and verify the DTC is still
present. Additional DTCs will be set as each sensor is
disconnected, clear DTCs after this test. Be sure to per-
form this test before replacing a component.

6-16 2011 Touring Diagnostics: Engine Management

Connector Information

For additional information about the connectors in the following

diagram(s) and diagnostic procedure(s), including the color of
the harness test kit terminal probes, see

B.1 CONNECTORS

Throttle Actuator Control HI

Throttle Actuator Control LO

TPS-2
TPS-1

TGS-2

TGS-1

5V Sensor Power-1

5V Sensor Ground-2

5V Sensor Power-2

29
30
36
37
39

ET Sensor

5V Sensor Ground-1

ECM

TGS

6 5 4 3 2 1

TCA

Vehicle Speed Input

JSS

Vehicle Speed Ground

Ground

JSS

(HDI only)

1 2 3

VSS

A
B

V/Y

R/W

BK/GY

BK/PK

BE/GN

BK/W

BN/O

BK/O

BN/R

BN/V

BK/PK

BK/O

BN/R
BN/V

V/Y

R/W

BE/GN

GN/BN

BK/GY

BK/GN

BN/O

PK/Y

BN/O

W/GN

BK/W

BK/Y

Right

GND 2

[224A]

[224B]

[204A]

[204B]

[211A]

[211B]

[65A]

[65B]

ET Sensor

A
B

[90A]

[90B]

[78B]

[78A]

[133B]

TMAP Sensor

TMAP Sensor Input

IAT

1 2 3

[80A]

[80B]

LGN/Y

V/W

R/W

LGN/Y

BK/GY

V/W

em00700

Figure 6-8. Throttle Control Actuator Circuit

DTC P0120

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-48637

Table 6-13. DTC P0120 Diagnostic Faults

POSSIBLE CAUSES

Open in sensor power circuit

Short to voltage in TPS-1 circuit

Open in TPS-1 circuit

Short to ground in TPS-1 circuit

Open n sensor ground circuit

ECM malfunction

TCA malfunction

1. Sensor Power-1 Circuit Test

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A], leaving [78A] discon-
nected. See

Disconnect TCA [211].

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for continuity between
breakout box terminal 50 and TCA [211] terminal 5.

Is continuity present?

Yes.

No. Repair open in (BN/O) wire.

2. TPS-1 Circuit Shorted Test

Test continuity between breakout box terminal 50 and
terminal 37.

Is continuity present?

Yes. Repair short between (BN/V) and (BN/O) wires.

No.

3. TPS-1 Circuit Continuity Test

Test continuity between breakout box terminal 37 and TCA
[211B] terminal 6.

2011 Touring Diagnostics: Engine Management 6-17

Is continuity present?

Yes.

No. Repair open in (BN/V) wire.

4. TPS-1 Circuit Short to Ground Test

Test continuity between breakout box terminal 37 and
ground.

Is continuity present?

Yes. Repair short to ground on (BN/V) wire.

No.

5. TPS-1 Circuit Short to Voltage Test

Turn IGN ON.

Test for voltage between breakout box terminal 37 and
ground.

Is voltage present?

Yes. Repair short to voltage on (BN/V) wire.

No.

6. Sensor Ground Continuity Test

Test continuity between breakout box terminal 61 and TCA
[211B] terminal 1.

Is continuity present?

Yes.

No. Repair open in (BK/W) wire.

7. TCA Test

Turn IGN OFF.

Connect ECM [78A] to breakout box.

Connect TCA [211].

Turn IGN ON.

Measure voltage between breakout box terminals 37 and
61.

Is voltage between 0.4-4.8V?

Yes. Replace the ECM. See the service manual.

No. Replace the TCA. See the service manual.

DTC P0122

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-48637

Table 6-14. DTC P0122 Diagnostic Faults

POSSIBLE CAUSES

Short to ground in TPS-1 Circuit

TCA malfunction

Open in sensor power circuit

ECM malfunction

1. TCA Sensor-1 Circuit Test

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A]. See

Turn IGN ON and engine stop switch to run.

Test for voltage at breakout box between terminal 37 and
terminal 61.

Is voltage greater than 0.2V?

Yes.

No.

2. TCA Sensor-1 Circuit Short to Ground
Test

Turn IGN OFF.

Disconnect ECM [78A] from breakout box.

Disconnect TCA [211].

Test for continuity between breakout box terminal 37 and
ground.

Is continuity present?

Yes. Repair short to ground in (BN/V) wire.

No.

3. TCA Power-1 Circuit Open Test

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for continuity between
breakout box terminal 50 and TCA [211] terminal 5.

Is continuity present?

Yes. Replace the TCA. See the service manual.

No. Repair open in (BN/O) wire.

4. TCA Sensor Test

Turn IGN OFF.

Disconnect TCA [211].

Test for voltage between breakout box terminal 50 and
ground.

Is voltage greater than 4V?

Yes. Replace the TCA. See the service manual.

No.

5. ECM Test

Disconnect ECM [78A] from breakout box.

Test for continuity at breakout box between terminals 37
and ground.

Is continuity present?

Yes. Repair short to ground in (BN/V) wire.

No. Replace the ECM. See the service manual.

6-18 2011 Touring Diagnostics: Engine Management

DTC P0123

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-48637

Table 6-15. DTC P0123 Diagnostic Faults

POSSIBLE CAUSES

Open in TPS-1 circuit

Short to voltage in TPS-1 circuit

Short to voltage in sensor power circuit

TCA malfunction

ECM malfunction

Open in sensor ground circuit

1. TPS-1 Voltage Test

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A]. See

Turn IGN ON.

Using a multimeter, measure voltage between breakout
box terminals 37 and 61.

Is voltage less than 4.8V?

Yes.

Go to Test 8.

No.

2. TPS-1 Circuit Test

Disconnect TCA [211].

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, measure voltage between
TCA [211B] terminal 6 and ground.

Is voltage between 4-5.25V?

Yes.

No. Less than 4V. Repair open in (BN/V) wire.

No. Greater than 5.25V. Repair short to voltage in
(BN/V) wire.

3. Sensor Power Circuit Test

Measure voltage between TCA [211B] terminal 5 and
ground.

Is voltage less than 5.25V?

Yes.

No. Repair short to voltage in (BN/O) wire.

4. TCA Test

Jumper TCA [211B] terminals 6 and 1.

Measure voltage between breakout box terminals 37 and
61.

Is voltage greater than 1.0V?

Yes.

No. Replace the TCA. See the service manual.

5. Sensor Ground Test

Turn IGN OFF.

Measure resistance between TCA [211B] terminal 1 and
ground.

Is resistance less than 2 Ohms?

Yes.

No.

6. Sensor Ground Circuit Shorted Test

Test for continuity between TCA [211B] terminals 5 and
6.

Is continuity present?

Yes. Repair short between (BN/V) and (BN/O) wires.

No. Replace the ECM. See the service manual.

7. Sensor Ground Circuit Test

Disconnect the ECM [78A].

Test for continuity between TCA [211B] terminal 1 and
breakout box terminal 61.

Is continuity present?

Yes. Replace the ECM. See the service manual.

No. Repair open in (BK/W) wire.

8. TPS-1 Circuit Function Test

Disconnect TCA [211].

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, measure voltage between
[211B] terminal 6 and ground.

Is voltage between 2-5.25V?

Yes.

Go to Test 9.

No. Less than 2V. Repair open in (BN/V) wire.

No. Greater than 5.25V. Repair short to voltage on
(BN/V) wire.

9. Sensor Ground Continuity Test

Measure voltage between TCA [211B] terminal 5 and
ground.

Is voltage less than 5.25V?

Yes.

Go to Test 10.

No. Repair short to voltage on (BN/O) wire.

10. Ground Circuit Open Test

Turn IGN OFF.

Disconnect the ECM [78A].

Test for continuity between TCA [211B] terminal 1 and
breakout box terminal 61.

2011 Touring Diagnostics: Engine Management 6-19

Is continuity present?

Yes.

Go to Test 11.

No. Repair open in (BK/W) wire.

11. TPS-1 Continuity Test

Test for continuity between TCA [211B] terminal 6 and
breakout box terminal 37.

Is continuity present?

Yes. Replace the TCA. See the service manual.

No. Repair open in (BN/V) wire.

DTC P0220

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-48637

Table 6-16. DTC P0220 Diagnostic Faults

POSSIBLE CAUSES

Open in sensor power circuit

Short to voltage in sensor power circuit

Open in TPS-2 circuit

Short to voltage in TPS-2 circuit

Short to ground in TPS-2 circuit

Open in sensor ground circuit

ECM malfunction

TCA malfunction

1. Sensor Power-2 Circuit Test

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A], leaving [78A] discon-
nected. See

Disconnect TCA [211].

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for continuity between
breakout box terminal 50 and TCA [211] terminal 5.

Is continuity present?

Yes.

No. Repair open in (BN/O) wire.

2. Sensor Power-2 Short to Voltage Test

Test for voltage between breakout box terminal 50 and
ground.

Is battery voltage present?

Yes. Repair short to voltage (BN/O) wire.

No.

3. TPS-2 Circuit Shorted Test

Test continuity between breakout box terminals 50 and
36.

Is continuity present?

Yes. Repair short between (BN/R) and (BN/O) wires.

No.

4. TPS-2 Circuit Continuity Test

Test continuity between breakout box terminals 36 and
TCA [211B] terminal 4.

Is continuity present?

Yes.

No. Repair open in (BN/R) wire.

5. TPS-1 Circuit Short to Ground Test

Test continuity between breakout box terminal 36 and
ground.

Is continuity present?

Yes. Repair short to ground on (BN/R) wire.

No.

6. TPS-1 Circuit Short to Voltage Test

Turn IGN ON.

Test for voltage between breakout box terminal 36 and
ground.

Is continuity present?

Yes. Repair short to voltage on (BN/R) wire.

No.

7. Sensor Ground Continuity Test

Test continuity between breakout box terminal 61 and TCA
[211B] terminal 1.

Is continuity present?

Yes.

Go to Test 8.

No. Repair open in (BK/W) wire.

8. TCA Test

Connect ECM [78A] to breakout box.

Connect TCA [211].

Measure voltage between breakout box terminals 36 and
61.

Is voltage between 0.4-4.8V?

Yes. Replace the ECM. See the service manual.

No. Replace the TCA. See the service manual.

6-20 2011 Touring Diagnostics: Engine Management

DTC P0222

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-48637

Table 6-17. DTC P0222 Diagnostic Faults

POSSIBLE CAUSES

Open in sensor power circuit

Short to ground in TPS-2 circuit

TCA malfunction

ECM malfunction

1. TCA Sensor-2 Circuit Test

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A]. See

Turn IGN ON and engine stop switch to run.

Test for voltage at breakout box between terminal 36 and
terminal 61.

Is voltage greater than 0.2V?

Yes.

No.

2. TCA Sensor-2 Circuit Short to Ground
Test

Turn IGN OFF.

Disconnect ECM [78A] from breakout box.

Disconnect TCA [211].

Test for continuity between breakout box terminal 36 and
ground.

Is continuity present?

Yes. Repair short to ground in (BN/R) wire.

No.

3. TCA Power-1 Circuit Open Test

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for continuity between
breakout box terminal 50 and TCA [211] terminal 5.

Is continuity present?

Yes. Replace the TCA. See the service manual.

No. Repair open in (BN/O) wire.

4. TCA 5V Ref Circuit Short to Ground Test

Turn IGN OFF.

Disconnect TCA [211].

Test for voltage between breakout box terminal 50 and
ground.

Is voltage greater than 4V?

Yes. Replace the TCA. See the service manual.

No.

5. ECM Test

Disconnect ECM [78A] from breakout box.

Test for continuity at breakout box between terminal 36
and ground.

Is continuity present?

Yes. Repair short to ground in (BN/R) wire.

No. Replace the ECM. See the service manual.

DTC P0223

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-48637

Table 6-18. DTC P0223 Diagnostic Faults

POSSIBLE CAUSES

Open in sensor power circuit

Short to voltage in sensor power circuit

Open in TPS-2 circuit

Short to voltage in TPS-2 circuit

Short to ground in TPS-2 circuit

Open in sensor ground circuit

ECM malfunction

TCA malfunction

1. TPS-2 Voltage Test

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A]. See

Turn IGN ON.

Measure voltage between breakout box terminals 36 and
61.

Is voltage less than 4.8V?

Yes.

No.

2. TPS-2 Circuit Test

Disconnect TCA [211].

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, measure voltage between
TCA [211B] terminal 4 and ground.

Is voltage less than 0.2V?

Yes.

No.

2011 Touring Diagnostics: Engine Management 6-21

3. Sensor Power Circuit Test

Measure voltage between TCA [211B] terminal 5 and
ground.

Is voltage less than 5.25V?

Yes.

No. Repair short to voltage in (BN/O) wire.

4. Sensor Ground Test

Turn IGN OFF.

Measure resistance between TCA [211B] terminal 1 and
ground.

Is resistance less than 2 Ohms?

Yes. Replace TCA. See the service manual.

No.

5. Shorted 5V Circuit Test

Test for continuity between TCA [211B] terminals 4 and
5.

Is continuity present?

Yes. Repair short between (BN/R) and (BN/O) wires.

No. Repair short to voltage on (BN/R) wire.

6. Sensor Ground Circuit Test

Disconnect the ECM [78A].

Test for continuity between [211B] terminal 1 and breakout
box terminal 61.

Is continuity present?

Yes. Replace the ECM. See the service manual.

No. Repair open in (BK/W) wire.

7. TPS-2 Circuit Test

Disconnect TCA [211].

Measure voltage between TCA [211B] terminal 4 and
ground.

Is voltage less than 1.0V?

Yes.

Go to Test 8.

No. Repair short to voltage on (BN/R) wire.

8. Sensor Ground Continuity Test

Measure voltage between TCA [211B] terminal 5 and
ground.

Is voltage less than 5.25V?

Yes.

Go to Test 9.

No. Repair short to voltage on (BN/O) wire.

9. Ground Circuit Open Test

Turn IGN OFF.

Disconnect the ECM [78A].

Test for continuity between TCA [211B] terminal 1 and
breakout box terminal 61.

Is continuity present?

Yes. Replace the TCA. See the service manual.

No. Repair open in (BK/W) wire.

6-22 2011 Touring Diagnostics: Engine Management

6.7

DTC P0031, P0032, P0131, P0132, P0134, P0151,
P0152, P0154

DESCRIPTION AND OPERATION

TOOL NAME

PART NUMBER

DIGITAL TECHNICIAN II

HD-48650

See

Figure 6-9

. The HO2S provides a signal to the ECM which

indicates whether the engine is running rich or lean.

•

A P0131 (front) or P0151 (rear) is set when the ECM
detects an excessively lean condition for a specified length
of time. This can be caused by mechanical issues such
as exhaust leaks. DTCs may also set if HO2S sensor fails.

•

A P0132 (front) or P0152 (rear) is set when the ECM
detects an excessively rich condition for a specified length
of time. This can be caused by oil contamination or fuel
injector malfunctions. DTCs may also set if HO2S sensor
fails.

•

A P0134 is set when the front O2 sensor circuit is open
or sensor is too cold to respond. A P0154 is set when the
rear O2 sensor circuit is open or sensor is too cold to
respond. Excessive oil usage may also cause these codes
to set.

When the air/fuel mixture is ideal, approximately 14.6 parts air
to 1 part fuel, the voltage will be approximately 0.45V when
measuring across the sensor. If the voltage is measured from
the sensor (terminals 46 or 66) to ground, the voltage will read
approximately 1.2V. This difference is due to an internal bias
in the ECM. When using DIGITAL TECHNICIAN II (Part
No. HD-48650), the O2 voltage reading is displayed in the
higher range 0.7-1.7V.

Table 6-19. Code Description

DESCRIPTION

DTC

Heater open/low

P0031

Heater shorted/high

P0032

Front O2 sensor low or engine running lean

P0131

Engine front O2 running rich

P0132

Front O2 sensor open/not responding/high

P0134

Rear O2 sensor low or engine running lean

P0151

Engine rear O2 running rich

P0152

Rear O2 sensor open/not responding/high

P0154

The heater portion of the HO2S is powered through the system
relay. The front and rear HO2S heaters share a common
ground through terminal 31 of the ECM. If the ECM recognizes
an open or short in the heater circuit it will set either DTC P0031
or P0032.

ed03081

Front HO2S [138]

ABS module [166] (if equipped)

Active exhaust [179]

Rear WSS [168]

Rear HO2S [137]

TSM/TSSM/HFSM [30]

HFSM antenna jumper harness [208]

Figure 6-9. Under Right Side Cover

Diagnostic Tips

HO2S diagnostic codes may be seen during the vehicle break-
in period. The HO2S DTCs will not illuminate the check engine
lamp for current or historic codes and will only be indicated by
DIGITAL TECHNICIAN II (Part No. HD-48650) or odometer
self-diagnostics. If the DTCs are reported during the break-in
period, clear or ignore the codes until the break-in period is
completed. All historic HO2S DTCs are to be ignored and
cleared.

The multimeter displays the signal from the HO2S in Volts.
This voltage will have an average value tending towards lean,
rich or ideal value depending on operating temperature of the
engine, engine speed and throttle position. An open/short to
voltage or short to ground in the (PK/O) wire (front) and
(PK/GN) wire (rear) will cause the engine to run rich (short to
ground) or lean (short to voltage) until fault is detected. Once
fault is detected, vehicle will run in open loop.

Check for the following conditions:

•

Poor connection: Inspect the ECM [78], fuel injector [84,
85] and HO2S [137, 138] connectors for backed out ter-
minals, improper mating, inoperative locks, improperly
formed or damaged terminals, poor terminal-to-wire con-
nection and damaged harnesses.

•

Dirty/stuck open injectors: The vehicle may run lean
(dirty/clogged injectors) or rich (stuck open injectors) if

2011 Touring Diagnostics: Engine Management 6-23

[13B]

[13A]

[78B]

[78A]

Y/GN

V/O

W/Y

V/Y

R/W

V/W

GN/GY

BK/PK

PK/GN

BE/GN

BK/GY

BK/GN

BK/BN

LGN/Y

GN/W

GY/BE

BN/R

BN/V

BK/W

BK/Y

PK/O

BN/O

PK/Y

Y/GN

Y/BE

BE/O

PK/O

V/BE

BK/Y

BN/O

Y/GN

O/GY

BN/O

BK/W

PK/Y

BK/W

Y/BE

BE/O

Y/GN

W/Y

V/BE

BK/O

GY/Y

V/GY

W/GN

V/W

R/W

LGN/Y

BK/GY

BE/GN

BK/GY

R/W

V/Y

1
2
3
4

B
C
D

Power

Ion Sense

Coil Rear

Coil Front

B
C
D

TGS

CKP

Sensor

TCA

TMAP

Sensor

Ignition Coil

VSS

Rear Fuel

Injector

Front Fuel

Injector

System

Relay

6 5 4 3 2 1

A B

3 4

1 2

Front ACR

(If Equipped)

2 1

3 4

Fuel Tank

Harness

Fuel Pump

Assembly In Tank

Fuel

Pump

Fuse

15A

To 15A

ECM Fuse

To 15A

Exhaust

Control Fuse

Rear

HO2S

(BK)

Front

HO2S

Active

Exhaust

(HDI Only)

V/O

PK/GN

BK/BN

GN/GY

LGN/R

Right

GND 2

Y/GN

V/GY

Y/GN

GY/Y

Purge Solenoid

(Optional)

BE/GY

[79A]
[79B]

[224A]

[224B]

[204A]

[204B]

[90A]

[90B]

[203AF]

[203BF]

Rear ACR

(If Equipped)

2 1

[211A]
[211B]

[20A]
[20B]

[80A]

[80B]

[141A]

[141B]

[65A]

[65B]

[179B]

ECM

Exhaust

Actuator

Rear

Fuel

Injector

TMAP

Sensor

Input

ront

Fuel

Injector

Throttle

Actuator

Control

Throttle

Actuator

Control

Heater

Ground

TPS

Exhaust

eedbac

TGS

ehicle

Speed

Input

CKP

Sensor

Rear

HO2

Sensor

12V

Rear

Ignition

Coil

ront

Ignition

Coil

TGS

Sensor

Ground

Sensor

Ground

CKP

Sensor

(+)

ehicle

Speed

Ground

ront

HO2

Sensor

Ground

Purge

Solenoid

23 24

28 29 30 31

363738 39 4043 46

4950 51 52 53 54

59 61 62 63 64

68 73

HO2S

Retur

3
2
1

GY/BE

Ion

Sense

Ground

23 24

28 29 30 31

363738 39 4043 46

4950 51 52 53 54

59 61 62 63 64

68 73

GN/W

Y/GN

O/GY

FLHR/C

EXCEPT

FLHR/C

BK/W

BK/O

BN/R

BN/O

BN/V

BK/PK

[84B]

[84A]

[85B]

[85A]

[95B]

[95A]

[83B]

[83A]

[138A]

[137A]

[203AR]

[203BR]

em00702

Figure 6-10. EFI Simplified Schematic

2011 Touring Diagnostics: Engine Management 6-25

DTC P0031

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-48637

Table 6-20. DTC P0031 Diagnostic Faults

POSSIBLE CAUSES

Open in sensor ground circuit

ECM malfunction

HO2 malfunction

Open in sensor power circuit

1. HO2S Voltage Test

Disconnect front HO2S [138].

Turn IGN ON using HARNESS CONNECTOR TEST
KIT (Part No. HD-41404-C) and a multimeter, test for
battery voltage between front HO2S [138A] terminal 1 and
ground.

Yes.

No. Repair open in (Y/GN).

2. HO2S Ground Test

With IGN OFF, connect BREAKOUT BOX (Part No. HD-
48637) between wire harness [78B] and ECM [78A]. See

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for continuity between
ECM [78A] terminal 31 and front HO2S [138A] terminal 2.

Is continuity present?

Yes.

No. Repair open in (GN/W).

3. HO2S Resistance Test

Measure resistance between front HO2S [138B] terminal
1 and terminal 2.

Is resistance between 13.5-23.5 Ohms?

Yes. Replace ECM. See the service manual.

No. Replace both HO2S. See the service manual.

DTC P0032

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

Table 6-21. DTC P0032 Diagnostic Faults

POSSIBLE CAUSES

ECM malfunction

HO2 malfunction

Short to voltage in sensor ground circuit

1. Rear HO2S Resistance Test

Disconnect rear HO2S [137].

Turn IGN ON, using HARNESS CONNECTOR TEST
KIT (Part No. HD-41404-C) and a multimeter, measure
resistance between rear HO2S [137B] terminal 1 and ter-
minal 2.

Is resistance between 13.5-23.5 Ohms?

Yes.

No. Replace rear HO2S. See the service manual.

2. Front HO2S Resistance Test

With IGN OFF, disconnect front HO2S [138].

Measure resistance between front HO2S [138B] terminal
1 and terminal 2.

Is resistance between 13.5-23.5 Ohms?

Yes.

No. Replace front HO2S. See the service manual.

3. HO2S Short to Voltage Test

With IGN ON, test for voltage between front HO2S [138A]
terminal 2 and ground.

Is voltage present?

Yes. Repair short to voltage in (GN/W) wire.

No. Replace ECM. See the service manual.

DTC P0131

TOOL NAME

PART NUMBER

BREAKOUT BOX

HD-48637

Table 6-22. DTC P0131 Diagnostic Faults

POSSIBLE CAUSES

Front HO2S malfunction

ECM malfunction

Short to ground in signal circuit

Fuel system malfunction

Leak in exhaust system

1. Front HO2S Test

Disconnect front HO2S [138].

Turn IGN ON.

Measure voltage between front HO2S [138A] terminal 3
(PK/O), to chassis ground.

Is voltage approximately 5V?

Yes.

No.

2. Front HO2S Signal Wire Shorted to
Sensor Ground Test

Turn IGN OFF.

6-26 2011 Touring Diagnostics: Engine Management

Disconnect ECM [78].

Test for continuity between front HO2S [138A] terminals
3 (PK/O) and 4 (BK/BN).

Is continuity present?

Yes. Repair short between (PK/O) and (BK/BN) wires.

No.

3. Front HO2S Signal Wire Shorted to
Ground Test

Test for continuity between front HO2S [138A] terminal 3
(PK/O) and vehicle ground.

Is continuity present?

Yes. Repair short between (PK/O) wire and ground.

No. If ECM [78] connections are good, replace ECM.
See the service manual.

4. Front HO2S Operation Test

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A]. See

Place transmission in neutral, engine stop switch to RUN
and IGN ON. Start engine and allow to reach operating
temperature.

With engine speed at a steady rpm, measure voltage
between breakout box terminals 66 and 73.

Is voltage approximately 1.2V?

Yes. Replace ECM. See the service manual.

No, constant 0.7-1.1V. Perform fuel pressure test.
See the service manual. Look for incorrect ECM cal-
ibration, low fuel pressure, air leaks and dirty injectors.
If no issues are found, replace HO2S.

DTC P0132

TOOL NAME

PART NUMBER

BREAKOUT BOX

HD-48637

Table 6-23. DTC P0132 Diagnostic Faults

POSSIBLE CAUSES

Front HO2S malfunction

ECM malfunction

Fuel system malfunction

Oil contamination on sensor

1. Front HO2S Operation Test

Turn IGN OFF.

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A]. See

Start the engine and allow it to reach operating temper-
ature.

With engine speed at a steady rpm, measure voltage
between breakout box terminals 66 and 73.

Is voltage approximately 1.2V?

Yes. Replace the ECM. See the service manual.

No, constant 1.3-1.7V. Perform fuel pressure test.
See the service manual. Look for incorrect ECM cal-
ibration, high fuel pressure, stuck open or leaking
injectors. If no issues are found, replace the HO2S.

DTC P0134

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-48637

Table 6-24. DTC P0134 Diagnostic Faults

POSSIBLE CAUSES

Front HO2S malfunction

ECM malfunction

Open or short to voltage in signal circuit

Open sensor ground

Heavy oil contamination

1. Front HO2S Signal Wire Short Circuit
Voltage Test

Disconnect front O2 sensor [138].

Turn IGN ON.

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, measure voltage between
front HO2S [138A] terminal 3 to chassis ground.

Is voltage greater than 5V?

Yes. Repair short to voltage on (PK/O) wire.

No, voltage greater than 4V.

No, voltage less than 4V.

2. Front HO2S Open Sensor Ground Test

Turn IGN OFF.

Connect BREAKOUT BOX (Part No. HD-48637) to wire
harness [78B], leaving ECM [78A] disconnected. See

Test for continuity between front HO2S [138A] terminal 4
(BK/BN) and breakout box terminal 48.

Is continuity present?

Yes. Replace the front HO2S. See the service
manual.

No. Repair open on (BK/BN) wire.

3. Front HO2S Signal Wire Open Test

Test for continuity between front HO2S [138A] terminal 3
(PK/O) and breakout box terminal 66.

2011 Touring Diagnostics: Engine Management 6-27

Is continuity present?

Yes. Replace ECM. See the service manual.

No. Repair open (PK/O) wire.

DTC P0151

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-48637

Table 6-25. DTC P0151 Diagnostic Faults

POSSIBLE CAUSES

Rear HO2S malfunction

ECM malfunction

Short to ground in signal circuit

Fuel system malfunction

Leak in exhaust system

1. Rear HO2S Test

Disconnect rear HO2S [137].

Turn IGN ON.

Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, measure voltage between
rear HO2S [137A] terminal 3 (PK/GN) to ground.

Is voltage approximately 5V?

Yes.

No.

2. Rear HO2S Signal Wire Shorted to Sensor
Ground Test

Turn IGN OFF.

Disconnect ECM [78].

Test for continuity between rear HO2S [137A] terminals
3 (PK/GN) and 4 (BK/BN).

Is continuity present?

Yes. Repair short between (PK/GN) and (BK/BN)
wires.

No.

3. Rear HO2S Signal Wire Shorted to Ground
Test

Test for continuity between rear HO2S [137A] terminal 3
(PK/GN) and ground.

Is continuity present?

Yes. Repair short between (PK/GN) wire and ground.

No. If ECM [78] connections are good, replace ECM.
See the service manual.

4. Rear HO2S Operation Test

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A]. See

Place transmission in neutral, engine stop switch to RUN
and IGN ON. Start engine and allow to reach operating
temperature.

With engine speed at a steady rpm, measure voltage
between ECM breakout box terminals 46 and 73.

Is voltage approximately 1.2V?

Yes. Replace ECM. See the service manual.

DTC P0152

TOOL NAME

PART NUMBER

BREAKOUT BOX

HD-48637

Table 6-26. DTC P0152 Diagnostic Faults

POSSIBLE CAUSES

Rear HO2S malfunction

ECM malfunction

Fuel system malfunction

Oil contamination on sensor

1. Rear HO2S Operation Test

Turn IGN OFF.

Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A]. See

Start the engine and allow it to reach operating temper-
ature.

With engine speed at a steady rpm, measure voltage
between breakout box terminals 46 and 73.

Is voltage approximately 1.2V?

Yes. Replace the ECM. See the service manual.