Harley Davidson 2013 Sportster Models. Electrical Diagnostics Manual — page 10

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

2. ET Sensor Signal Wire Shorted to Ground

41404) and a multimeter, measure the voltage between

Test

to ET sensor [90B] terminal 1 (PK/Y) and ground.

1. Measure resistance between ET sensor [90B] terminal 1

3. With the IGN ON, is the voltage reading greater than 6V?

(PK/Y) and ground.

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

2. Is resistance reading less than 1 Ohm?

b. No. Voltage is less than 4V. Go to Test 2.

a. Yes. Repair short to ground in (PK/Y) wire.

b. No. Go to Test 3.

2. ET Sensor Signal Wire Open Test

1. Turn IGN OFF.

3. ET Sensor Signal Wire Shorted to Sensor

2. Connect BREAKOUT BOX (Part No. HD-43876) to wiring

Ground Test

harness [78B], leaving ECM [78A] disconnected. See

1. Connect BREAKOUT BOX (Part No. HD-43876) to wire

1.2 DIAGNOSTIC TOOLS.

harness [78B], leaving ECM [78A] disconnected. See

1.2 DIAGNOSTIC TOOLS.

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

41404) and a multimeter, test for continuity between ET

2. Test continuity between to breakout box terminals 6 and

sensor [90B] terminal 1 (PK/Y) and breakout box terminal

26.

3. Is continuity present?

4. Is continuity present?

a. Yes. Repair short between terminal 1 (PK/Y) and 2

a. Yes. Go to Test 3.

(BK/W) of [90B] wires.

b. No. Repair open in (PK/Y) wire.

b. No. Replace ECM.

3. ET Sensor Open Ground Wire Test

DTC P0118

1. Test for continuity between ET sensor [90B] terminal 2

(BK/W) and breakout box terminal 26.

PART NUMBER

TOOL NAME

2. Is continuity present?

HD-41404

HARNESS CONNECTOR TEST KIT

a. Yes. Go to Test 4.

HD-43876

BREAKOUT BOX

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

Table 6-12. DTC P0118 Diagnostic Faults

4. ET Sensor Signal Wire Shorted to Sensor

POSSIBLE CAUSES

Power Test

ET sensor malfunction

1. Test for continuity between breakout box terminals 6 and

14.

Open or short to voltage in 5V reference circuit

2. Is continuity present?

1. ET Sensor Test

a. Yes. Repair short between (PK/Y) and (R/W) wires.

1. Disconnect ET sensor [90].

Verify ET sensor resistance value and if incorrect

replace ET sensor.

b. No. Replace ECM.

6-16 2013 Sportster Diagnostics: Engine Management

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DTC P0122,

P0123

6.7

DESCRIPTION AND OPERATION

NOTE

The ECM supplies a 5V signal on terminal 14 to terminal B of

The TMAP and TPS are both connected to the same reference

the TPS. The TPS sends a signal back to the ECM on terminal

line (+5V REF). If the line goes to ground or open, multiple

24. The returned signal varies in voltage according to throttle

trouble codes will be set (DTCs P0107, P0108 and P0122,

position.

P0123, P1501 or P1502). Start with the DTC having the lowest

ranking value.

•

At idle (closed throttle), the signal is typically in the range

of 0.2-0.8V.

Check for the following conditions:

•

At wide open throttle, the signal is normally 4.0-4.9V.

•

Poor connection: Inspect ECM harness connector [78B]

for backed out terminals, improper mating, inoperative

DTC P0122 or P0123 will set if the TPS voltage signal does

locks, improperly formed or damaged terminals, poor ter-

not fall within the acceptable range.

minal-to-wire connection and damaged harness.

•

Perform 1.3 DIAGNOSTICS AND TROUBLESHOOTING,

Table 6-13. Code Description

Wiggle Test to locate intermittents: If connections and

DTC

DESCRIPTION

harness check out OK, monitor TPS voltage using a mul-

timeter while moving related connectors and wiring har-

P0122

TPS open/low

ness. If the failure is induced, the TPS voltage will change.

P0123

TPS high

•

TPS scaling: Observe the TPS voltage display while

Diagnostic Tips

opening the throttle with engine stopped and ignition switch

ON. Display should vary from closed throttle TPS voltage

The multimeter reads throttle position in Volts. Voltage should

(when throttle is closed) to greater than 4.0V (when throttle

increase at a steady rate as the throttle is moved from idle to

is held wide open). As the throttle is slowly moved, the

wide open. A short to ground or open on the (GY/V) or (R/W)

voltage should change gradually without spikes or low

wires also will result in a DTC P0122. A short to ground or open

voltages being observed.

on the (R/W) wire (+5V REF) sets multiple codes as described

below.

•

A faulty sensor can negatively affect the signal voltage of

the other sensors sharing the same 5V reference. If the

ed03059

wiring passes the following tests, disconnect one sensor

at a time on the

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.

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.

1. ET sensor

2. Rear fuel injector [85]

3. IAC [87]

4. Front fuel injector [84]

5. TPS [88]

6. TMAP sensor [80]

Figure 6-10. Between Cylinders Right Side

2013 Sportster Diagnostics: Engine Management 6-17

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em00647

[90B] [90A]

PK/Y

BK/W

Sensor

[78A] [78B]

ECM

[145A] [145B]

[80B] [80A]

PK/Y

BK/W

LGN/Y

TMAP

5V Sensor Power

R/W

Sensor

MAP

V/W

[88B] [88A]

BK/W

R/W

TPS

GY/V

5V Sensor GND

BK/W

CKP

[79B] [79A]

Sensor

CKP Sensor(+)

CKP Sensor(-)

[138B] [138A]

Front O2

Sensor

Front O2 Sensor Input

PK/O

BK/W

GY/BK

[137B] [137A]

Rear O2

Sensor

Rear O2 Sensor Input

PK/GN

BK/W

GY/BK

[65B] [65A]

BK/R

VSS Input

BK/BE

VSS

JSS (HDI)

GN/BN

[133B] [133A]

Power GND

R/W

Power GND

JSS

GN/BN

(HDI)

GND 1

Figure 6-11. Sensor Circuit

6-18 2013 Sportster Diagnostics: Engine Management

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DTC P0122

5. TPS Signal Wire Shorted to Sensor

Ground Test

PART NUMBER

TOOL NAME

1. Test for continuity between breakout box terminals 24 and

HD-41404

HARNESS CONNECTOR TEST KIT

26.

HD-43876

BREAKOUT BOX

2. Is continuity present?

a. Yes. Repair short between (GY/V) and (BK/W) wires.

Table 6-14. DTC P0122 Diagnostic Faults

b. No. Replace the ECM.

POSSIBLE CAUSES

6. TPS 5V Sensor Power Open Wire Test

TPS malfunction

1. Connect BREAKOUT BOX (Part No. HD-43876) to wire

Open or short to ground in 5V reference circuit

harness [78B], leaving ECM [78A] disconnected. See

Short to ground in signal circuit

1.2 DIAGNOSTIC TOOLS.

2. Test for continuity in (R/W) wire between [88B] terminal

1. TPS Test

B and breakout box terminal 14.

1. Disconnect the TPS [88].

3. Is continuity present?

2. Using the HARNESS CONNECTOR TEST KIT (Part

a. Yes. Replace the ECM.

No. HD-41404), connect a test wire across [88B] terminals

B and C.

b. No. Repair open in (R/W) wire.

3. Clear DTCs using odometer self-diagnostics. See

DTC P0123

2.1 INITIAL DIAGNOSTICS, Odometer Self-Diagnostics.

4. Turn IGN OFF and ON.

PART NUMBER

TOOL NAME

5. Does the DTC P0122 reset?

HD-41404

HARNESS CONNECTOR TEST KIT

a. Yes. Go to Test 2.

HD-43876

BREAKOUT BOX

b. No. Replace the TPS.

Table 6-15. DTC P0123 Diagnostic Faults

2. TPS Signal Voltage Test

POSSIBLE CAUSES

1. Remove the test wire.

TPS malfunction

2. With IGN ON, test for voltage between [88B] terminal B

Short to voltage in 5V reference circuit

and ground.

Open sensor ground

3. Is voltage approximately 5V?

a. Yes. Go to Test 3.

1. TPS Test

b. No. Go to Test 6.

1. Disconnect the TPS [88].

2. Clear DTCs using odometer self-diagnostics. See

3. TPS Signal Wire Continuity Test

2.1 INITIAL DIAGNOSTICS, Odometer Self-Diagnostics.

1. Connect BREAKOUT BOX (Part No. HD-43876) to wire

harness [78B], leaving ECM [78A] disconnected. See

3. Turn IGN OFF and ON.

1.2 DIAGNOSTIC TOOLS.

4. Does the DTC P0123 reset?

2. Test for continuity in (GY/V) wire between [88B] terminal

a. Yes. Go to Test 2.

C and breakout box terminal 24.

b. No. Go to Test 4.

3. Is continuity present?

a. Yes. Go to Test 4.

2. TPS Signal Wire Short to 5V Test

1. Disconnect the ECM [78].

b. No. Repair open in (GY/V) wire.

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

4. TPS Signal Wire Shorted to Ground Test

41404) and a multimeter, test for continuity between [88B]

terminals B and C.

1. Test for continuity in (GY/V) wire between breakout box

terminal 24 and ground.

3. Is continuity present?

2. Is continuity present?

a. Yes. Repair short between (R/W) and (GY/V) wires.

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

b. No. Go to Test 3.

b. No. Go to Test 5.

3. TPS Signal Wire Short to Voltage Test

1. With IGN ON, test for voltage on [88B] terminal C.

2013 Sportster Diagnostics: Engine Management 6-19

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2. Is voltage present?

5. TPS Ground Wire Open Test

a. Yes. Repair short to voltage in (GY/V) wire.

1. Connect BREAKOUT BOX (Part No. HD-43876) to wire

b. No. Replace the ECM.

harness [78B], leaving ECM [78A] disconnected. See

1.2 DIAGNOSTIC TOOLS.

4. TPS 5V Shorted to Battery Voltage Test

2. Test for continuity between [88B] terminal A and breakout

1. With IGN ON, using HARNESS CONNECTOR TEST KIT

box terminal 26.

(Part No. HD-41404) and a multimeter, test for voltage on

3. Is continuity present?

[88B] terminal B and ground.

a. Yes. Replace the TPS.

2. Is voltage greater than 5.25V?

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

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

b. No. Go to Test 5.

6-20 2013 Sportster Diagnostics: Engine Management

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DTC P0131,

P0132, P0134, P0151, P0152, P0154

6.8

check engine lamp for current or historic codes and will only

DESCRIPTION AND OPERATION

be indicated by DIGITAL TECHNICIAN II (Part No. HD-48650)

or odometer self-diagnostics. If the DTCs are reported during

PART NUMBER

TOOL NAME

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

HD-48650

DIGITAL TECHNICIAN II

in period is completed. All historic O2 sensor DTCs are to be

ignored and cleared.

See Figure 6-12. The O2 sensor provides a signal to the ECM

The multimeter displays the signal from the O2 sensor in Volts.

which indicates whether the engine is running rich or lean.

This voltage will have an average value tending towards lean,

•

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

rich or ideal value depending on operating temperature of the

detects an excessively lean condition for a specified length

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

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

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

•

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

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

detects an excessively rich condition for a specified length

fault is detected, vehicle will run in open loop.

of time. DTCs may also set if O2 sensor fails. This condi-

tion may also occur with oil contamination.

Check for the following conditions:

•

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

•

Poor connection: Inspect the ECM [78], fuel injector [84,

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

85] and O2 sensor connectors for backed out terminals,

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

improper mating, inoperative locks, improperly formed or

respond. May also occur in cases of extreme oil contam-

damaged terminals, poor terminal-to-wire connection and

ination.

damaged harnesses.

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

•

Dirty/stuck open injectors: The vehicle may run lean

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

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

there are injector problems. This could also cause poor

fuel economy and performance.

Table 6-16. Code Description

•

Loose O2 sensor: If an O2 sensor is loose, engine per-

DTC

DESCRIPTION

formance may be affected. This could also show up as a

P0131

Front O2 sensor low or engine running lean

slow changing O2 sensor voltage.

P0132

Engine front O2 running rich

•

Loose/leaking exhaust: This can cause a poor ground

P0134

Front O2 sensor open/not responding/high

connection for the sensor or allow fresh air into the exhaust

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

P0151

Rear O2 sensor low or engine running lean

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

P0152

Engine rear O2 running rich

•

Engine misfire: See 6.24 MISFIRE AT IDLE OR UNDER

P0154

Rear O2 sensor open/not responding/high

LOAD.

•

Leaking injectors: This causes fuel imbalance and poor

ed02856

idle quality due to different air/fuel ratios in each cylinder.

To check for leaky injectors, first remove the air box and

air filter. Then, with the throttle wide open, turn IGN ON

for 2 seconds and then OFF for 2 seconds five consecutive

times. Replace the fuel injector if there is any evidence of

raw fuel in the bores. See Fuel Injectors in the service

manual.

•

Intake leaks: See the service manual.

•

Excessive oil consumption: This may cause a P0132,

P0134, P0152 or P0154 to set. The burning oil can create

a rich condition due to the carbon build up on the O2

sensors. If signs of oil consumption are evident inspect

the O2 sensors and replace if necessary.

Connector Information

Figure 6-12. O2 Sensor

For additional information about the connectors in the following

diagram(s) and diagnostic procedure(s), including the color of

Diagnostic Tips

the harness test kit terminal probes, see B.1 CONNECTORS.

O2 sensor diagnostic codes may be seen during the vehicle

break-in period. The O2 sensor DTCs will not illuminate the

2013 Sportster Diagnostics: Engine Management 6-21

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[90B] [90A]

PK/Y

BK/W

Sensor

[78A] [78B]

ECM

[145A] [145B]

[80B] [80A]

PK/Y

BK/W

LGN/Y

TMAP

5V Sensor Power

R/W

Sensor

MAP

V/W

[88B] [88A]

BK/W

R/W

TPS

GY/V

5V Sensor GND

BK/W

CKP

[79B] [79A]

Sensor

CKP Sensor(+)

CKP Sensor(-)

[138B] [138A]

Front O2

Sensor

Front O2 Sensor Input

PK/O

BK/W

GY/BK

[137B] [137A]

Rear O2

Sensor

Rear O2 Sensor Input

PK/GN

BK/W

GY/BK

[65B] [65A]

BK/R

VSS Input

BK/BE

VSS

JSS (HDI)

GN/BN

[133B] [133A]

Power GND

R/W

Power GND

JSS

GN/BN

(HDI)

GND 1

Figure 6-13. Sensor Circuit

6-22 2013 Sportster Diagnostics: Engine Management

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4. With engine speed at a steady rpm, measure voltage

DTC P0131

between breakout box terminals 8 and 26.

PART NUMBER

TOOL NAME

5. Is voltage above 0.6V?

HD-41404

HARNESS CONNECTOR TEST KIT

a. Yes. Replace ECM.

HD-43876

BREAKOUT BOX

b. No. Perform fuel pressure test. Look for correct ECM

calibration, low fuel pressure, air leaks and dirty

injectors. If no issues are found, replace O2 sensor.

Table 6-17. DTC P0131 Diagnostic Faults

DTC P0132

POSSIBLE CAUSES

Front O2 sensor malfunction

PART NUMBER

TOOL NAME

Short to ground in signal circuit

HD-43876

BREAKOUT BOX

Fuel system malfunction

1. Front O2 Sensor Test

Table 6-18. DTC P0132 Diagnostic Faults

1. Disconnect front O2 sensor [138].

POSSIBLE CAUSES

2. Turn IGN ON.

Front O2 sensor malfunction

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

Fuel system malfunction

41404) and a multimeter, measure voltage between front

O2 sensor [138B] terminal 1 (PK/O), to chassis ground.

1. Front O2 Sensor Operation Test

1. Turn IGN OFF.

4. Is voltage approximately 5V?

a. Yes. Go to Test 4.

2. Connect BREAKOUT BOX (Part No. HD-43876) between

wire harness [78B] and ECM [78A]. See 1.2 DIAGNOSTIC

b. No. Go to Test 2.

TOOLS.

2. Front O2 Sensor Signal Wire Shorted to

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

ature.

Sensor Ground Test

1. Turn IGN OFF.

4. With engine speed

at a steady rpm, measure voltage

between breakout box terminals 8 and 26.

2. Disconnect ECM [78].

5. Is voltage less than

0.4V?

3. Test for continuity between front O2 sensor [138B] ter-

a. Yes. Replace the ECM.

minals 1 (PK/O) and 2 (BK/W).

b. No. Perform fuel pressure test. Look for correct ECM

4. Is continuity present?

calibration, high fuel pressure, stuck open or leaking

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

injectors. If no issues are found, replace the O2

sensor.

b. No. Go to Test 3.

DTC P0134

3. Front O2 Sensor Signal Wire Shorted to

Ground Test

PART NUMBER

TOOL NAME

1. Test for continuity between front O2 sensor [138B] terminal

HD-41404

HARNESS CONNECTOR TEST KIT

1 (PK/O) and vehicle ground.

HD-43876

BREAKOUT BOX

2. Is continuity present?

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

Table 6-19. DTC P0134 Diagnostic Faults

b. No. If ECM [78] connections are good, replace ECM.

POSSIBLE CAUSES

4. Front O2 Sensor Operation Test

Front O2 sensor malfunction

1. Connect BREAKOUT BOX (Part No. HD-43876) between

Open or short to voltage in signal circuit

wire harness [78B] and ECM [78A]. See 1.2 DIAGNOSTIC

Open sensor ground

TOOLS.

2. Connect O2 sensor.

1. Front O2 Sensor Signal Wire Short Circuit

3. Place transmission in neutral, engine stop switch to RUN

Voltage Test

and IGN ON. Start engine and allow to reach operating

1. Disconnect front O2 Sensor [138].

temperature.

2. Turn IGN ON.

2013 Sportster Diagnostics: Engine Management 6-23

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

2. Rear O2 Sensor Signal Wire Shorted to

41404) and a multimeter, measure voltage between front

Sensor Ground Test

O2 sensor [138B] terminal 1 to chassis ground.

1. Turn IGN OFF.

4. Is voltage greater than 5.2V?

2. Disconnect ECM [78].

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

3. Test for continuity between rear O2 sensor [137B] ter-

b. No. (Greater than 4V.) Go to Test 2.

minals 1 (PK/GN) and 2 (BK/W).

c. No. (Less than 4V.) Go to Test 3.

4. Is continuity present?

2. Front O2 Sensor Open Sensor Ground

a. Yes. Repair short between (PK/GN) and (BK/W)

wires.

Test

b. No. Go to Test 3.

1. Turn IGN OFF.

2. Connect BREAKOUT BOX (Part No. HD-43876) to wire

3. Rear O2 Sensor Signal Wire Shorted to

harness [78B], leaving ECM [78A] disconnected. See

Ground Test

1.2 DIAGNOSTIC TOOLS.

1. Test for continuity between rear O2 sensor [137B] terminal

3. Test for continuity between front O2 sensor [138B] terminal

1 (PK/GN) and ground.

2 (BK/W) and breakout box terminal 26.

2. Is continuity present?

4. Is continuity present?

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

a. Yes. Replace the front O2 sensor.

b. No. If ECM [78] connections are good, replace ECM.

b. No. Repair open on (BK/W) wire.

4. Rear O2 Sensor Operation Test

3. Front O2 Sensor Signal Wire Open Test

1. Connect BREAKOUT BOX (Part No. HD-43876) between

1. Test for continuity between front O2 sensor [138B] terminal

wire harness [78B] and ECM [78A]. See 1.2 DIAGNOSTIC

1 (PK/O) and breakout box terminal 8.

TOOLS.

2. Is continuity present?

2. Connect O2 sensor.

a. Yes. Replace ECM.

3. Place transmission in neutral, engine stop switch to RUN

b. No. Repair open (PK/O) wire.

and IGN ON. Start

engine and allow to reach operating

temperature.

DTC P0151

4. With engine speed at a steady rpm, measure voltage

between ECM breakout box terminals 23 (+) and 26 (-).

PART NUMBER

TOOL NAME

5. Is voltage above 0.6V?

HD-41404

HARNESS CONNECTOR TEST KIT

a. Yes. Replace ECM.

HD-43876

BREAKOUT BOX

b. No. Perform fuel pressure test. Look for correct ECM

calibration, low fuel pressure, air leaks and dirty

Table 6-20. DTC P0151 Diagnostic Faults

injectors. If no issues are found, replace O2 sensor.

POSSIBLE CAUSES

DTC P0152

Rear O2 sensor malfunction

Short to ground in signal circuit

PART NUMBER

TOOL NAME

Fuel system malfunction

HD-43876

BREAKOUT BOX

1. Rear O2 Sensor Test

Table 6-21. DTC P0152 Diagnostic Faults

1. Disconnect rear O2 sensor [137].

POSSIBLE CAUSES

2. Turn IGN ON.

Rear O2 sensor malfunction

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

41404) and a multimeter, measure voltage between rear

Fuel system malfunction

O2 sensor [137B] terminal 1 (PK/GN) to ground.

1. Rear O2 Sensor Operation Test

4. Is voltage approximately 5V?

1. Turn IGN OFF.

a. Yes. Go to Test 4.

2. Connect BREAKOUT BOX (Part No. HD-43876) between

b. No. Go to Test 2.

wire harness [78B] and ECM [78A]. See 1.2 DIAGNOSTIC

TOOLS.

6-24 2013 Sportster Diagnostics: Engine Management

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

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

ature.

43876) and a multimeter, measure voltage between rear

O2 sensor [137B] terminal 1 to chassis ground.

4. With engine speed at a steady rpm, measure voltage

between breakout box terminals 23 and 26.

4. Is voltage greater than 5.5V?

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

5. Is voltage less than 0.4V?

a. Yes. Replace the ECM.

b. No. (Greater than 4V.) Go to Test 2.

b. No. Perform fuel pressure test. Look for correct ECM

c. No. (Less than 4V.) Go to Test 3.

calibration, high fuel pressure, stuck open or leaking

injectors. If no issues are found, replace the O2

2. Rear O2 Sensor Open Sensor Ground

sensor.

Test

1. Turn IGN OFF.

DTC P0154

2. Connect BREAKOUT BOX (Part No. HD-43876) to wire

PART NUMBER

TOOL NAME

harness [78B], leaving ECM [78A] disconnected. See

1.2 DIAGNOSTIC TOOLS.

HD-43876

HARNESS CONNECTOR TEST KIT

3. Test for continuity between rear O2 sensor [137B] terminal

2 (BK/W) and breakout box terminal 26.

Table 6-22. DTC P0154 Diagnostic Faults

4. Is continuity present?

POSSIBLE CAUSES

a. Yes. Replace the rear O2 sensor.

Rear O2 sensor malfunction

b. No. Repair open on (BK/W) wire.

Open or short voltage in signal circuit

Open sensor ground

3. Rear O2 Sensor Signal Wire Open Test

1. Test for continuity between rear O2 sensor [137B] terminal

1. Rear O2 Sensor Signal Wire Short Circuit

1 (PK/GN) and breakout box terminal 23.

Voltage Test

2. Is continuity present?

1. Disconnect rear O2 sensor [137].

a. Yes. Replace ECM.

2. Turn IGN ON.

b. No. Repair open in (PK/GN) wire.

2013 Sportster Diagnostics: Engine Management 6-25

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DTC P0261,

P0262, P0263, P0264

6.9

DESCRIPTION AND OPERATION

Connector Information

See Figure 6-14. The fuel injectors are solenoids that allow

For additional information about the connectors in the following

pressurized fuel into the intake tract. The injectors are timed

diagram(s) and diagnostic procedure(s), including the color of

to the engine cycle and triggered sequentially. The power for

the harness test kit terminal probes, see B.1 CONNECTORS.

the injectors comes from the system relay. The system relay

also provides power for the fuel pump and the ignition coil. The

ed01998

ECM provides the path to ground to trigger the injectors.

NOTE

ECM fuse and system relay failures or wiring harness problems

will cause 12V power to be lost to both injectors, ignition coils

and fuel pump.

Table 6-23. Code Description

DTC

DESCRIPTION

P0261

Front injector open/low

P0262

Front injector high

P0263

Rear injector open/low

P0264

Rear injector high

1. IAC [87]

2. Rear fuel injector [85]

3. Front fuel injector [84]

Figure 6-14. Between Cylinder Heads Left Side

6-26 2013 Sportster Diagnostics: Engine Management

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em00648

[78A] [78B]

Y/GN

ECM

BE/GY

System

Relay

System Relay

GN/O

W/BK

[61B]

[61A]

Fuse Block

Y/GN

Fuel

Front Injector

Y/GN

O/GY

Pump

Y/GN

Front Injector

W/Y

[84B] [84A]

[141A] [141B]

Rear Injector

Y/GN

GND 1

Rear Injector

GN/GY

[85B] [85A]

[145A] [145B]

Ignition

Coil

Y/GN

Power

Y/GN

Power

Spark Plugs

Rear Coil

Y/BE

Rear Coil

Front Coil

BE/O

Front Coil

Ground

[83B] [83A]

Ground

GND 1

ECM Fuse

Main Fuse

15A

30A

Battery

BE/GY

Switch Power

W/BK

B+

OFF

IGN Fuse

ACC

Battery

Engine Stop

W/BK

15A

Switch

R/BK

IGN

Ignition

[22A] [22B]

Switch

Figure 6-15. Ignition Circuit

2013 Sportster Diagnostics: Engine Management 6-27

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2. Test for continuity between system relay socket [61B]

DTC P0261

terminal E (Y/GN) wire and front injector [84B] terminal A

(Y/GN).

PART NUMBER

TOOL NAME

3. Is continuity present?

HD-34730-2E

FUEL INJECTOR TEST LIGHT

a. Yes. If connections are good, replace ECM.

HD-41404

HARNESS CONNECTOR TEST KIT

b. No. Repair open (Y/GN) wire.

HD-43876

BREAKOUT BOX

5. Injector Resistance Test

Table 6-24. DTC P0261 Diagnostic Faults

1. Test resistance between terminal A and B of injector [84A].

POSSIBLE CAUSES

2. Is resistance value between 10-20 Ohms?

Front fuel injector malfunction

a. Yes. Replace ECM.

Open signal circuit

b. No. Replace injector.

Open power circuit

6. Driver Short to Ground Test

1. Front Fuel Injector Test

1. Connect BREAKOUT BOX (Part No. HD-43876) to wire

1. Disconnect front fuel injector [84].

harness [78B], leaving ECM [78A] disconnected. See

1.2 DIAGNOSTIC TOOLS.

2. Connect FUEL INJECTOR TEST LIGHT (Part No. HD-

34730-2E) to [84B].

2. Test for continuity between breakout box terminal 21 and

ground.

3. Crank engine.

3. Is continuity present?

4. Does light flash when engine is cranking (or running)?

a. Yes. Repair short to ground on (W/Y) wire.

a. Yes. Go to Test 5.

b. No. Replace ECM.

b. No, lamp does not illuminate. Go to Test 2.

c. No, lamp is on steady. Go to Test 6.

DTC P0262

2. Front Fuel Injector Power Wire Open

PART NUMBER

TOOL NAME

Circuit Test

HD-41404

HARNESS CONNECTOR TEST KIT

1. Turn IGN OFF and engine stop switch to RUN.

2. Remove fuel injector test light.

Table 6-25. DTC P0262 Diagnostic Faults

3. Connect BREAKOUT BOX (Part No. HD-43876) to ECM

POSSIBLE CAUSES

harness [78B] leaving ECM [78A] disconnected. See

Front fuel injector malfunction

1.2 DIAGNOSTIC TOOLS.

Short to ground in signal circuit

4. Using HARNESS CONNECTOR TEST KIT (Part No. HD-

41404) and a multimeter, test for continuity between

1. Front Fuel Injector Control Wire Shorted

breakout box terminal 21 and fuel injector [84B] terminal

to Voltage Test

B (W/Y).

1. Disconnect front fuel injector [84].

5. Is continuity present?

a. Yes. Go to Test 3.

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

41404) and a multimeter, measure the voltage between

b. No. Repair open on (W/Y) wire.

[84B] terminal B (W/Y) and ground.

3. Front Fuel Injector Power Wire Shorted

3. Is voltage less than 1.0V?

to Ground Test

a. Yes. Go to Test 2.

1. Test for continuity between breakout box terminal 21 and

b. No. Repair short to voltage on (W/Y) wire.

ground.

2. Injector Resistance Test

2. Is continuity present?

1. Test resistance between terminal A and B of [84A].

a. Yes. Repair short in (W/Y) to ground.

2. Is resistance value between 10-20 Ohms?

b. No. Go to Test 4.

a. Yes. Replace ECM.

4. Fuel Injector/System Relay Test

b. No. Replace front fuel injector.

1. Remove system relay.

6-28 2013 Sportster Diagnostics: Engine Management

HOME

2. Test for continuity between system relay socket [61B]

DTC P0263

terminal E (Y/GN) wire and [85B] terminal A (Y/GN).

PART NUMBER

TOOL NAME

3. Is continuity present?

HD-34730-2E

FUEL INJECTOR TEST LIGHT

a. Yes. If connections are good, replace ECM.

HD-41404

HARNESS CONNECTOR TEST KIT

b. No. Repair open (Y/GN) wire.

HD-43876

BREAKOUT BOX

5. Injector Resistance Test

1. Using HARNESS CONNECTOR TEST KIT (Part No. HD-

Table 6-26. DTC P0263 Diagnostic Faults

41404) and a multimeter, test resistance between terminal

A and B of [85A].

POSSIBLE CAUSES

Rear fuel injector malfunction

2. Is resistance value between 10-20 Ohms?

Open signal circuit

a. Yes. Replace ECM.

Open power circuit

b. No. Replace rear fuel injector.

1. Rear Fuel Injector Test

6. Driver Short to Ground Test

1. Disconnect rear fuel injector [85].

1. Connect BREAKOUT BOX (Part No. HD-43876) to wire

harness [78B], leaving ECM [78A] disconnected. See

2. Connect FUEL INJECTOR TEST LIGHT (Part No. HD-

1.2 DIAGNOSTIC TOOLS.

34730-2E) to [85B].

2. Test for continuity between breakout box terminal 19 and

3. Crank engine.

ground.

4. Does lamp flash when engine is cranking (or running)?

3. Is continuity present?

a. Yes. Go to Test 5.

a. Yes. Repair short to ground on (GN/GY) wire.

b. No, lamp does not illuminate. Go to Test 2.

b. No. Replace ECM.

c. No, lamp is on steady. Go to Test 6.

DTC P0264

2. Rear Fuel Injector Power Wire Open

Circuit Test

PART NUMBER

TOOL NAME

HD-41404

HARNESS CONNECTOR TEST KIT

1. Turn IGN OFF and engine stop switch to RUN.

2. Remove fuel injector test light.

Table 6-27. DTC P0264 Diagnostic Faults

3. Connect BREAKOUT BOX (Part No. HD-43876) to ECM

harness [78B], leaving ECM [78A] disconnected. See

POSSIBLE CAUSES

1.2 DIAGNOSTIC TOOLS.

Rear fuel injector malfunction

4. Test for continuity between breakout box terminal 19 and

Short to ground in signal circuit

fuel injector [85B] terminal B (GN/GY).

5. Is continuity present?

1. Rear Fuel Injector Control Wire Shorted

a. Yes. Go to Test 3.

to Voltage Test

1. Disconnect rear fuel injector [85].

b. No. Repair open on (GN/GY) wire.

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

3. Rear Fuel Injector Power Wire Shorted to

41404) and a multimeter, measure the voltage between

Ground Test

[85B] terminal B (GN/GY) and ground.

1. Test for continuity between breakout box terminal 19 and

3. Is voltage less than 1.0V?

ground.

a. Yes. Go to Test 2.

2. Is continuity present?

b. No. Repair short to voltage on (GN/GY) wire.

a. Yes. Repair short in (GN/GY) to ground.

2. Injector Resistance Test

b. No. Go to Test 4.

1. Test resistance between terminal A and B of [85A].

4. Fuel Injector/System Relay Test

2. Is resistance value between 10-20 Ohms?

1. Remove system relay.

a. Yes. Replace ECM.

b. No. Replace rear fuel injector.

2013 Sportster Diagnostics: Engine Management 6-29

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DTC P0373,

P0374

6.10

DESCRIPTION AND OPERATION

ed01995

If the CKP sensor signal is weak or absent, DTCs P0373 or

P0374 will be set. DTC P0373 is usually set when several

attempts to crank the engine have failed.

NOTE

Engine will not start if signal is not detected or cannot be syn-

chronized.

Table 6-28. Code Description

DTC

DESCRIPTION

P0373

CKP sensor intermittent

P0374

CKP not detected/cannot synchronize

1. Voltage regulator [77]

Diagnostic Tips

2. CKP sensor [79]

Engine must be cranked for more than five seconds without

3. JSS (HDI) [133]

CKP signal to set P0374 code. Intermittent TMAP wiring or

4. Front O2 sensor [138]

sensor issues may cause these codes to set prior to setting

Figure 6-16. Lower Left Front

TMAP codes. Verify TMAP wiring and sensor prior to replacing

the ECM.

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.

6-30 2013 Sportster Diagnostics: Engine Management

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em00647

[90B] [90A]

PK/Y

BK/W

Sensor

[78A] [78B]

ECM

[145A] [145B]

[80B] [80A]

PK/Y

BK/W

LGN/Y

TMAP

5V Sensor Power

R/W

Sensor

MAP

V/W

[88B] [88A]

BK/W

R/W

TPS

GY/V

5V Sensor GND

BK/W

CKP

[79B] [79A]

Sensor

CKP Sensor(+)

CKP Sensor(-)

[138B] [138A]

Front O2

Sensor

Front O2 Sensor Input

PK/O

BK/W

GY/BK

[137B] [137A]

Rear O2

Sensor

Rear O2 Sensor Input

PK/GN

BK/W

GY/BK

[65B] [65A]

BK/R

VSS Input

BK/BE

VSS

JSS (HDI)

GN/BN

[133B] [133A]

Power GND

R/W

Power GND

JSS

GN/BN

(HDI)

GND 1

Figure 6-17. Sensor Circuit

3. Did DTC P0373 reset?

DTC P0373

a. Yes. Inspect and verify battery and starting system.

See 3.2 STARTING SYSTEM.

Table 6-29. DTC P0373 Diagnostic Faults

b. No. System functioning properly.

POSSIBLE CAUSES

CKP sensor malfunction

Open or short to ground in signal circuit

1. CKP Sensor Test

1. Clear the DTC. See 2.1 INITIAL DIAGNOSTICS, Odometer

Self-Diagnostics.

2. Start the vehicle.

2013 Sportster Diagnostics: Engine Management 6-31

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DTC P0374

4. CKP Sensor Signal Wire Shorted to CKP

Ground Wire Test

PART NUMBER

TOOL NAME

1. Test for continuity between breakout box terminals 30 and

HD-43876

BREAKOUT BOX

12.

2. Is continuity present?

Table 6-30. DTC P0374 Diagnostic Faults

a. Yes. Repair short between CKP [79B] terminals 1 (R)

and 2 (BK).

POSSIBLE CAUSES

b. No. Go to Test 5.

CKP sensor malfunction

Open or short to ground in signal circuit

5. CKP Sensor Low Shorted to Ground Test

1. CKP Sensor Connections Test

1. Test for continuity between breakout box terminals 12 (+)

and 28 (-).

1. With IGN OFF, disconnect ECM [78] and inspect for

damaged, corroded or pushed out terminals.

2. Is continuity present?

a. Yes. Repair short to sensor ground on (BK) wire.

2. Are terminal problems present?

a. Yes. Repair terminals as required.

b. No. Go to Test 6.

b. No. Go to Test 2.

6. CKP Sensor Output Test

1. Connect CKP sensor [79].

2. CKP Sensor Signal Wire Continuity Test

1. Disconnect CKP sensor [79].

2. Test for AC voltage at breakout box terminals 30 (+) and

12 (-).

2. Connect BREAKOUT BOX (Part No. HD-43876) to wire

harness [78B], leaving ECM [78A] disconnected. See

3. Place transmission in neutral, turn IGN ON and engine

1.2 DIAGNOSTIC TOOLS.

stop switch to RUN.

3. Test for continuity between breakout box terminal 30 to

4. Crank engine for 5 seconds while observing multimeter.

CKP sensor [79B] terminal 1 (R).

5. Is AC voltage present?

4. Is resistance less than 1.0 Ohm?

a. Yes. See diagnostic tips before replacement. Replace

a. Yes. Go to Test 3.

ECM.

b. No. Repair open wire (R).

b. No. Go to Test 7.

3. CKP Sensor Ground Wire Continuity Test

7. CKP Sensor Signal Wire Shorted to

Ground Test

1. Test continuity from breakout box terminal 12 to CKP

sensor [79B] terminal 2 (BK).

1. Disconnect CKP sensor [79].

2. Is resistance less than 1.0 Ohm?

2. Test for continuity between breakout box terminals 30 (+)

a. Yes. Go to Test 4.

and 28 (-).

b. No. Repair open on (BK) wire.

3. Is continuity present?

a. Yes. Repair shorted (R) wire to ground.

b. No. Replace the CKP sensor.

6-32 2013 Sportster Diagnostics: Engine Management

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DTC P0501,

P0502

6.11

DESCRIPTION AND OPERATION

ed03056

See Figure 6-18. The VSS is powered and monitored by the

ECM. The ECM processes the vehicle speed signal and

transmits this signal to the TSM, TSSM or HFSM, and

speedometer through serial data.

NOTES

•

The ECM uses VSS input to calculate idle air control

position. Therefore problems with the vehicle speed signal

can lead to improper operation of the idle air control.

•

The TMAP, JSS, TPS and VSS sensors are connected to

the same reference line (+5V REF). If the reference line

goes to ground or open, multiple codes will be set (DTC

P0107, P0108, P0122, P0123, P0501, P0502, P1501,

P1502). Start with the trouble code having the lowest

ranking value.

1. Harness ground [GND1]

2. Starter

•

A faulty sensor can negatively affect the signal voltage of

3. Battery to starter

the other sensors sharing the same 5V reference. If the

4. VSS [65]

wiring passes the following tests, disconnect one sensor

5. Battery ground

at a time on the 5V reference and verify the DTC is still

present. Additional DTCs will be set as each sensor is

Figure 6-18. Grounds

disconnected, clear DTCs after this test. Be sure to per-

form this test before replacing a component.

Connector Information

Table 6-31. Code Description

For additional information about the connectors in the following

diagram(s) and diagnostic procedure(s), including the color of

DTC

DESCRIPTION

the harness test kit terminal probes, see B.1 CONNECTORS.

P0501

VSS low

P0502

VSS high

2013 Sportster Diagnostics: Engine Management 6-33

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em00647

[90B] [90A]

PK/Y

BK/W

Sensor

[78A] [78B]

ECM

[145A] [145B]

[80B] [80A]

PK/Y

BK/W

LGN/Y

TMAP

5V Sensor Power

R/W

Sensor

MAP

V/W

[88B] [88A]

BK/W

R/W

TPS

GY/V

5V Sensor GND

BK/W

CKP

[79B] [79A]

Sensor

CKP Sensor(+)

CKP Sensor(-)

[138B] [138A]

Front O2

Sensor

Front O2 Sensor Input

PK/O

BK/W

GY/BK

[137B] [137A]

Rear O2

Sensor

Rear O2 Sensor Input

PK/GN

BK/W

GY/BK

[65B] [65A]

BK/R

VSS Input

BK/BE

VSS

JSS (HDI)

GN/BN

[133B] [133A]

Power GND

R/W

Power GND

JSS

GN/BN

(HDI)

GND 1

Figure 6-19. Sensor Circuit

6-34 2013 Sportster Diagnostics: Engine Management

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DTC P0501

5. VSS Dirty or Damaged Test

1. Remove VSS.

PART NUMBER

TOOL NAME

2. Check for debris on the sensor tip.

HD-41404

HARNESS CONNECTOR TEST KIT

3. Is debris present?

HD-43876

BREAKOUT BOX

a. Yes. Clean debris from VSS and install.

b. No. If VSS connections are good, replace VSS.

Table 6-32. DTC P0501 Diagnostic Faults

POSSIBLE CAUSES

DTC P0502

VSS malfunction

PART NUMBER

TOOL NAME

Open or short to ground in signal circuit

HD-41404

HARNESS CONNECTOR TEST KIT

Open or short to ground in 5V reference circuit

HD-43876

BREAKOUT BOX

1. VSS Connections Test

1. With IGN OFF, disconnect VSS [65].

Table 6-33. DTC P0502 Diagnostic Faults

2. Inspect [65] for damaged terminals, backed out or bent

POSSIBLE CAUSES

terminals. Repair as necessary.

VSS malfunction

3. Place transmission in neutral, turn IGN ON and engine

Short to voltage in signal circuit

stop switch to RUN.

Open ground

4. Using HARNESS CONNECTOR TEST KIT (Part No. HD-

5V reference shorted to battery voltage

41404) and a multimeter, measure voltage between VSS

[65B] terminal A and ground.

1. VSS Sensor Power Shorted to Voltage

5. Is voltage reading approximately 5.0V?

Test

a. Yes. Go to Test 3.

1. With IGN OFF, disconnect VSS [65].

b. No. Go to Test 2.

2. Inspect [65] for damaged, terminals backed out or bent

terminals. Repair as necessary.

2. VSS Sensor Power Short to Ground Test

3. Place transmission

in neutral, turn IGN ON and engine

1. Turn IGN OFF.

stop switch to RUN.

2. Disconnect ECM [78].

4. Using HARNESS CONNECTOR TEST KIT (Part No. HD-

3. Test continuity between [65B] terminal A and ground.

41404) and a multimeter, measure voltage between VSS

[65B] terminals A (BK/R) and C (BK).

4. Is continuity present?

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

5. Is voltage greater than 6.0V?

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

b. No. Repair open on (BK/R) wire.

b. No. Go to Test 2.

3. VSS Signal Wire Short to Ground Test

2. VSS Signal Wire Short to Voltage Test

1. Connect BREAKOUT BOX (Part No. HD-43876) to wire

harness [78B], leaving ECM [78A] disconnected. See

1. Measure voltage between VSS [65B] terminal B (BK/BE)

1.2 DIAGNOSTIC TOOLS.

and ground.

2. Test for continuity between breakout box terminals 33 and

2. Is voltage above 6.0V?

28.

a. Yes. Repair short to voltage on (BK/BE) wire.

3. Is continuity present?

b. No. Go to Test 3.

a. Yes. Repair short to ground on (BK/BE) wire.

3. VSS Ground Wire Open Test

b. No. Go to Test 4.

1. Test continuity between breakout box terminal 28 and VSS

4. VSS Signal Wire Open Test

[65B] terminal C (BK).

1. Test for continuity between breakout box terminal 33 and

2. Is continuity present?

[65B] terminal B.

a. Yes. Go to Test 4.

2. Is continuity present?

b. No. Repair open on (BK) wire.

a. Yes. Go to Test 5.

b. No. Repair open on (BK/BE) wire.

2013 Sportster Diagnostics: Engine Management 6-35

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Harley Davidson 2013 Sportster Models. Electrical Diagnostics Manual — page 10

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