Harley Davidson Softail Delux FLSTN BIKE 2011-2015. Electrical Diagnostics

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DTC B2102,

B2103, B2104

6.4

DESCRIPTION AND OPERATION

ed03462

The BCM supplies and monitors the 12V system power circuit

from terminal L3 of the BCM to the following components:

•

Ignition coil

•

Active intake

•

Active exhaust

•

Front fuel injector

•

Rear fuel injector

•

Purge solenoid

•

ECM

•

Front HO2 sensor

•

Rear HO2 sensor

•

Front ACR

•

Rear ACR

If the vehicle is equipped with ACRs, the power for the ACRs

is also supplied by the BCM through the system power circuit.

The system power circuit is energized when the ignition is

turned on.

ECM

ECM [78-2]

Table 6-4. Code Description

ECM [78-1]

Purge solenoid [95] (back side of purge

DTC

DESCRIPTION

solenoid)

Security siren

B2102

System power output shorted high

BCM

B2103

System power output shorted low

BCM [242] (back side of BCM)

B2104

System power output overloaded

Security siren [142]

Rear WSS [168]

Conditions for Setting

10. ABS [166]

11. ABS ECU

DTC B2104 will set if the system power circuit draws more

than 10 Amps.

Figure 6-5. Electrical Panel: FXSB

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Diagnostic Tips

Since the system power circuit normally has ignition voltage

with IGN ON, the short to voltage will have to be present with

the vehicle turned off in order to set DTC B2102.

When disconnecting connectors, always inspect connector for

corrosion or backed out terminals and repair as required.

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. BCM [242]

2. ABS ECU [166]

3. Rear WSS [168]

4. Rear tire

Figure 6-4. ABS [166]: Except FXSB

6-8 2013 Softail Diagnostics: Engine Management

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[242A] [242B]

BCM

System Power

R/GN

Purge

System Power

R/GN

Solenoid

Purge Solenoid

LGN/BK

[95A] [95B]

System Power

R/GN

Active

Ground

Exhaust

Exhaust Actuator

LGN/O

Exhaust Feedback

LGN/BE

[78B-2] [78A-2]

ECM

[179A] [179B]

GY/BN

Rear HO2 Sensor

Active

Active Intake

LGN/V

R/GN

System Power

Intake

LGN/BE

Exhaust Feedback

System Power

R/GN

BK/GN

Ground

BK/W

5V Sensor Ground

[178A] [178B]

LGN/BK

Purge Solenoid

LGN/R

ACR Enable

System Power

R/GN

LGN/O

Exhaust Actuator

Rear HO2

Rear O2 Heater Ground

BK/PK

LGN/V

Active Intake

Sensor

Rear O2 Sensor

GY/BN

5V Sensor Ground

BK/W

LGN/BN

Front HO2 Sensor

[138B] [138A]

BK/PK

Rear HO2 Heater Sensor

BK/GN

Ground

LGN/BN

ION Sense

System Power

R/GN

GY/Y

Rear Fuel Injector

Front HO2

Front O2 Heater Ground

BK/O

GN/Y

Front Fuel Injector

Sensor

Front O2 Sensor

GN/BN

BK/O

Front HO2 Heater Ground

5V Sensor Ground

BK/W

GN/BE

Front Ignition Coil

GY/BE

Rear Ignition Coil

[138B] [138A]

[78B-1] [78A-1]

A B C D

[83B]

[84B]

A B

[203FB]

A B

[203RB]

A B

[85B]

A B

A B C D

[83A]

[84A]

A B

[203FA]

A B

[203RA]

A B

[85A]

A B

GND 2

GND 1

Front Fuel

Front ACR

Rear ACR

Rear Fuel

Injector

Ignition Coil

Figure 6-6. System Power Circuit

2013 Softail Diagnostics: Engine Management 6-9

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DTC B2102

DTC B2103, B2104

PART NUMBER

TOOL NAME

PART NUMBER

TOOL NAME

HD-41404

HARNESS CONNECTOR TEST KIT

HD-41404

HARNESS CONNECTOR TEST KIT

HD-50390-1

BREAKOUT BOX

HD-50390-1

BREAKOUT BOX

HD-50390-4

ECM CABLE

HD-50390-2

BCM CABLE

HD-50390-4-P

ECM OVERLAY

HD-50390-2-P

BCM OVERLAY

Table 6-5. DTC B2102 Diagnostic Faults

Table 6-6. DTC B2103, B2104 Diagnostic Faults

POSSIBLE CAUSES

Short to battery in the system power circuit

Short to ground in the system power circuit

Ignition coil resistance too low

1. System Power Circuit Short to Voltage

Front coil shorted low

Test

Rear coil shorted low

Turn IGN OFF.

Active intake resistance too low

Connect BREAKOUT BOX (Part No. HD-50390-1) and

Active exhaust resistance too low

ECM CABLE (Part No. HD-50390-4) to wiring harness

[78B] leaving ECM [78A] disconnected. See 1.2 DIA-

Front HO2 resistance too low

GNOSTIC TOOLS.

Rear HO2 resistance too low

Verify ECM OVERLAY (Part No. HD-50390-4-P) is in

Front fuel injector resistance too low

position on BOB.

Rear fuel injector resistance too low

Using HARNESS CONNECTOR TEST KIT (Part No. HD-

ACR resistance too low

41404), test voltage between BOB [78-2] terminal 16 and

Purge solenoid resistance too low

ground.

Is battery voltage present?

1. Ignition Coil Test

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

1. Turn IGN OFF.

No. Replace BCM.

2. Disconnect ignition coil [83].

3. Clear DTCs.

4. Turn IGN ON.

5. Check DTCs.

6. Did DTC reset?

a. Yes. Go to Test 2.

b. No. Replace ignition coil.

2. Rear Coil Shorted to Ground Test

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

41404), test continuity between [83B] terminal C and

ground.

2. Is continuity present?

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

b. No. Go to Test 3.

3. Front Coil Shorted to Ground Test

1. Test continuity between [83B] terminal D and ground.

2. Is continuity present?

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

b. No. Go to Test 4.

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4. Rear Fuel Injector Test

8. AIS Test

1. Turn IGN OFF.

2. Connect [83].

2. Connect [179].

3. Disconnect rear fuel injector [85].

3. Disconnect AIS [178].

4. Clear DTCs.

5. Turn IGN ON.

6. Check DTCs.

7. Did DTC reset?

a. Yes. Go to Test 5.

a. Yes. Go to Test 9.

b. No. Replace rear fuel injector.

b. No. Replace AIS.

5. Front Fuel Injector Test

9. Front HO2S Test

1. Turn IGN OFF.

2. Connect [85].

2. Connect [178].

3. Disconnect front fuel injector [84].

3. Disconnect front HO2S [138].

4. Clear DTCs.

5. Turn IGN ON.

6. Check DTCs.

7. Did DTC reset?

a. Yes. Go to Test 6.

a. Yes. Go to Test 10.

b. No. Replace front fuel injector.

b. No. Replace front HO2S.

6. Purge Solenoid Test

10. Rear HO2S Test

1. Turn IGN OFF.

2. Connect [84].

2. Connect [138].

3. Disconnect purge solenoid [95].

3. Disconnect rear HO2S [137].

4. Clear DTCs.

5. Turn IGN ON.

6. Check DTCs.

7. Did DTC reset?

a. Yes. Go to Test 7.

a. Yes. Go to Test 11.

b. No. Replace purge solenoid.

b. No. Replace rear HO2S.

7. Exhaust Actuator Test

11. Front ACR Test

1. Turn IGN OFF.

2. Connect [95].

2. Connect [137].

3. Disconnect exhaust actuator [179].

3. Disconnect front ACR [203F].

4. Clear DTCs.

5. Turn IGN ON.

6. Check DTCs.

7. Did DTC reset?

a. Yes. Go to Test 8.

a. Yes. Go to Test 12.

b. No. Replace exhaust actuator.

b. No. Replace front ACR.

2013 Softail Diagnostics: Engine Management 6-11

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6. Check DTCs.

12. Rear ACR Test

1. Turn IGN OFF.

7. Did DTC reset?

a. Yes. Go to Test 14.

2. Connect [203F].

b. No. Replace ECM.

3. Disconnect rear ACR [203R].

4. Clear DTCs.

14. BCM Test

5. Turn IGN ON.

1. Turn IGN OFF.

6. Check DTCs.

2. Connect [78].

7. Did DTC reset?

3. Connect BREAKOUT BOX (Part No. HD-50390-1) and

BCM CABLE (Part No. HD-50390-2) to wire harness

a. Yes. Go to Test 13.

[242B] leaving BCM [242A] disconnected. See 1.2 DIA-

b. No. Replace rear ACR.

GNOSTIC TOOLS.

4. Verify BCM OVERLAY (Part No. HD-50390-2-P) is in

13. ECM Test

position on BOB.

1. Turn IGN OFF.

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

2. Connect [203R].

41404), test continuity between BOB terminal L3 and

ground.

3. Disconnect ECM [78-1] and [78-2].

6. Is continuity present?

4. Clear DTCs.

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

5. Turn IGN ON.

b. No. Replace BCM.

6-12 2013 Softail Diagnostics: Engine Management

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DTC B2116,

B2117, B2118, B2119

6.5

DESCRIPTION AND OPERATION

Table 6-7. Code Description

The BCM supplies and monitors the 12V system power circuit

DTC

DESCRIPTION

from terminal F4 of the BCM to the fuel pump. The fuel pump

is constantly grounded. The BCM controls the fuel pump by

B2116

Fuel pump output open

turning on and off the power to the pump on the (R/BN) wire.

B2117

Fuel pump output shorted high

B2118

Fuel pump output shorted low

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B2119

Fuel pump output overloaded

Conditions for Setting

DTC B2116 will set if the fuel pump circuit draws less than 600

milliamps.

DTC B2119 will set if the fuel pump circuit draws more than 6

Amps.

Diagnostic Tips

DTC B2119 can set if the BCM sees an excessive load on the

fuel pump circuit. This could be caused by a fuel pump being

run dry. If the fuel pump was replaced or the vehicle was run

out of gas, prime the pump and clear the code. Start the vehicle

1. Speedometer [39]

and check DTCs to see if the code returns.

2. Indicator lamps [21]

Any circuit that is powered up continually with IGN ON could

3. Ignition switch [33]

cause DTC B2117 or B2119 to set if shorted to the fuel pump

4. Fuel pump and sender [141]

circuit. If a short to voltage or overload conditon is found, test

Figure 6-7. Under Console: Except FXS/B

for continuity between fuel pump circuit and the other power

circuits from the BCM.

Connector Information

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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.

Figure 6-8. Speedometer [39]: FXS/B Typical

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BCM

Fuel Pump

[20A] [20B]

[141B] [141A]

And

Sender

Main

R/BN

Fuel Pump Power

Harness

W/Y

Fuel Level Sender

(Except FXS/B)

BK/GN

Sender Ground

Pump Ground

R/O

[242A]

Battery

[242B]

W/Y

Fuel Level

15A

BK/GN

Ground

R/O

Battery Fuse

[64B]

R/BN

Speedometer

W/Y

[39B] [39A]

BK/GN

Fuel Pump

[13B] [13A]

[141B] [141A]

And

R/O

Sender

R/BN

Fuel Pump Power

W/Y

Fuel Level Sender

(FXS/B)

BK/GN

Sender Ground

Pump Ground

R/O

W/Y

Fuel Level

BK/GN

Ground

R/O

Battery Fuse

Speedometer

[20A] [20B]

[39B] [39A]

Main

Harness

[117B] [117A]

Fuel

Gauge

Running Light Power

(Except FXS/B)

W/Y

Fuel Level Sender

BK/GN

Ground

W/Y

BK/GN

[200B] [200A]

Resistor

ASSY

(FXS/B)

W/Y

BK/GN

200

GND 1

GND 2

Figure 6-9. Fuel Sensor Circuit

6-14 2013 Softail Diagnostics: Engine Management

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DTC B2116

DTC B2117

PART NUMBER

TOOL NAME

Table 6-9. DTC B2117 Diagnostic Faults

HD-41404

HARNESS CONNECTOR TEST KIT

POSSIBLE CAUSES

HD-50390-1

BREAKOUT BOX

Short to voltage in the fuel pump power circuit

HD-50390-2

BCM CABLE

1. Fuel Pump Power Circuit Short to Voltage

HD-50390-2-P

BCM OVERLAY

Test

1. Turn IGN ON.

Table 6-8. DTC B2116 Diagnostic Faults

2. Does fuel pump continue to run after the initial 2 second

POSSIBLE CAUSES

start up?

Open in the fuel pump power circuit

a. Yes. Repair short to voltage in (R/BN) wire. See dia-

Fuel pump fault or malfunction

gnostic tips. If no source of short is found, replace the

BCM.

1. Fuel Pump Circuit Test

b. No. Go to Test 2.

1. Turn IGN OFF.

2. Code Verification Test

2. Disconnect fuel pump [141].

1. Clear DTC.

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

41404), connect voltmeter between [141B] terminals A

2. Start engine.

and D.

3. Check DTCs.

4. Turn IGN ON.

4. Did DTC reset?

5. Was battery voltage displayed for a short time?

a. Yes. Replace BCM.

a. Yes. Replace fuel pump.

b. No. Concern is intermittent. See 1.3 DIAGNOSTICS

b. No. Go to Test 2.

AND TROUBLESHOOTING, Wiggle Test.

2. Ground Circuit Open Test

DTC B2118, B2119

1. Turn IGN OFF.

Table 6-10. DTC B2118, B2119 Diagnostic Faults

2. Test continuity between [141B] terminal D and ground.

POSSIBLE CAUSES

3. Is continuity present?

Short to ground in the fuel pump power circuit

a. Yes. Go to Test 3.

Fuel pump malfunction

b. No. Repair open in (BK) ground wire.

1. Fuel Test

3. Power Circuit Open Test

1. Verify there is fuel in fuel tank.

1. Connect BREAKOUT BOX (Part No. HD-50390-1) and

BCM CABLE (Part No. HD-50390-2) to wire harness

2. Is fuel present in tank?

[242B], leaving BCM [242A] disconnected. See 1.2 DIA-

a. Yes. Go to Test 2.

GNOSTIC TOOLS.

b. No. Fill tank with fuel and clear DTCs. If the DTC

2. Verify BCM OVERLAY (Part No. HD-50390-2-P) is in

returned, then continue with tests. Go to Test 2.

position on BOB.

2. Fuel Pump Test

3. Test continuity between BOB terminal F4 and [141B] ter-

minal A.

1. Turn IGN OFF.

4. Is continuity present?

2. Disconnect fuel pump [141].

a. Yes. Replace BCM.

3. Clear DTC.

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

4. Turn IGN ON.

5. Check DTCs.

6. Did DTC B2118 or B2119 reset?

a. Yes. Go to Test 3.

b. No. Replace fuel pump.

2013 Softail Diagnostics: Engine Management 6-15

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DTC P0107,

P0108

6.6

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

DESCRIPTION AND OPERATION

form this test before replacing a component.

PART NUMBER

TOOL NAME

•

MAP sensor codes may be set in cases of an intermittent

TPS which has not yet set TPS codes.

HD-23738

VACUUM PUMP

See Figure 6-11 for common 5V sensor power and ground

See Figure 6-10. The MAP sensor is supplied 5V from the ECM

interconnections.

[78-2] terminal 9 and sends a signal back to the ECM [78-1]

Connector Information

terminal 7. This signal varies in accordance with engine vacuum

and atmospheric barometric pressure. Changes in barometric

For additional information about the connectors in the following

pressure are influenced by weather and altitude.

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

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

Table 6-11. Code Description

ed03338

DTC

DESCRIPTION

P0107

MAP sensor failed low/open

P0108

MAP sensor failed high/open port

Diagnostic Tips

Shorted IAC wiring can cause MAP sensor DTCs.

These codes will set if the MAP sensor signal is out of range.

Code P0108 can only be detected with the engine running.

NOTE

Do not over-pump vacuum pump during MAP sensor output

check as sensor damage may result.

•

Check MAP sensor output. Using the VACUUM PUMP

(Part No. HD-23738), apply a vacuum to the pressure port

of the MAP sensor. The signal voltage should decrease

as the vacuum is applied.

•

The MAP, JSS, TPS and VSS are connected to the same

5V reference line. If the reference line shorts to ground or

opens, multiple codes will be set (DTC P0107, P0108,

P0122, P0123, P1501, P1502).

1. Rear fuel injector [85]

•

A faulty sensor can negatively affect the signal voltage of

2. IAC [87]

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

3. Front fuel injector [84]

wiring passes the following tests, disconnect one sensor

4. Active intake solenoid [178]

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

5. TPS [88]

present. Additional DTCs will be set as each sensor is

6. IAT sensor [89]

7. MAP sensor [80]

Figure 6-10. Between Cylinders Right Side

2013 Softail Diagnostics: Engine Management 6-17

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5V Sensor Power

R/W

VSS

VSS Input

LGN/Y

Ground

BK/GN

[65A] [65B]

5V Sensor Ground

BK/W

MAP

MAP Input

Sensor

5V Sensor Power

R/W

To BCM

[80A] [80B]

5V Sensor Power

R/W

TPS

5V Sensor Ground

BK/W

TPS

GN/V

[88A] [88B]

System Power

R/GN

Rear HO2

Rear O2 Heater Ground

BK/PK

Sensor

Rear O2 Sensor

GY/BN

5V Sensor Ground

BK/W

[138B] [138A]

5V Sensor Ground

R/W

JSS

JSS Signal

LGN/GY

(HDI)

Sensor Ground

BK/GN

[133A] [133B]

System Power

R/GN

Front HO2

Front O2 Heater Ground

BK/O

Sensor

Front O2 Sensor

GN/BN

5V Sensor Ground

BK/W

[138B] [138A]

IAT

GN/GY

IAT

Sensor

5V Sensor Ground

BK/W

[89A] [89B]

ET Sensor

Sensor

5V Sensor Ground

BK/W

[90A] [90B]

GND 1

[78B-1]

[78B-2]

[78A-1]

[78A-2]

ECM

Figure 6-11. Sensor Circuit

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5. Is continuity present?

DTC P0107

a. Yes. Go to Test 4.

PART NUMBER

TOOL NAME

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

HD-41404

HARNESS CONNECTOR TEST KIT

4. Signal Wire Shorted to Ground Test

HD-50390-1

BREAKOUT BOX

1. Test continuity between BOB [78-1] terminal 7 and ground.

HD-50390-4

ECM CABLE

HD-50390-4-P

ECM OVERLAY

2. Is continuity present?

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

Table 6-12. DTC P0107 Diagnostic Faults

b. No. Go to Test 5.

POSSIBLE CAUSES

5. Signal Wire Shorted to Sensor Ground

MAP sensor malfunction

Test

Open or shorted to ground signal wire

1. Test continuity between BOB [78-1] terminal 7 and [78-2]

terminal 7.

Open or shorted to ground 5V reference circuit

2. Is continuity present?

1. MAP Sensor Test

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

1. Turn IGN OFF.

b. No. Replace ECM.

2. Disconnect MAP sensor [80].

6. 5V Reference Wire Open Test

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

41404), connect a test wire between [80B] terminals B

1. Turn IGN OFF.

(GY) wire and C (R/W) wire.

2. Connect BREAKOUT BOX (Part No. HD-50390-1) and

4. Clear DTCs.

ECM CABLE (Part No. HD-50390-4) to wiring harness

[78B-1] and [78B-2], leaving ECM [78A-1] and [78A-2]

5. Start engine.

disconnected. See 1.2 DIAGNOSTIC TOOLS.

6. Turn IGN OFF.

3. Verify ECM OVERLAY (Part No. HD-50390-4-P) is in

7. Check DTCs.

position on BOB.

8. Did DTC reset?

4. Test continuity between [80B] terminal C (R/W) wire and

a. Yes. Go to Test 2.

BOB [78-2] terminal 9.

b. No. Replace MAP sensor.

5. Is continuity present?

a. Yes. Go to Test 7.

2. Signal Voltage Test

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

1. Turn IGN OFF.

7. 5V Reference Shorted to Signal Ground

2. Remove test wire.

Test

3. Turn IGN ON.

1. Test continuity between BOB [78-2] terminals 9 and 7.

4. Test voltage between [80B] terminal C (R/W) wire to

ground.

2. Is continuity present?

a. Yes. Repair short between the (R/W) and (BK/W)

5. Is voltage approximately 5V?

wires.

a. Yes. Go to Test 3.

b. No. Go to Test 8.

b. No. Go to Test 6.

NOTE

3. Signal Wire Continuity Test

The following tests are related to IAC circuitry.

1. Turn IGN OFF.

8. IAC A High Shorted to Voltage Test

2. Connect BREAKOUT BOX (Part No. HD-50390-1) and

1. Disconnect IAC [87].

ECM CABLE (Part No. HD-50390-4) to wiring harness

[78B-1] and [78B-2], leaving ECM [78A-1] and [78A-2]

2. Turn IGN ON.

disconnected. See 1.2 DIAGNOSTIC TOOLS.

3. Test voltage between BOB [78B-2] terminal 1 and ground.

3. Verify ECM OVERLAY (Part No. HD-50390-4-P) is in

position on BOB.

4. Is voltage greater than 1.0V?

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

4. Test continuity between [80B] terminal B (GY) wire and

BOB [78-1] terminal 7.

b. No. Go to Test 9.

2013 Softail Diagnostics: Engine Management 6-19

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3. Verify ECM OVERLAY (Part No. HD-50390-4-P) is in

9. B High Shorted to Voltage Test

position on BOB.

1. Test voltage between BOB [78B-2] terminal 12 and ground.

4. Test continuity between BOB [78-1] terminal 7 and [78-2]

2. Is voltage greater than 1.0V?

terminal 9.

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

5. Is continuity present?

b. No. Go to Test 10.

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

10. B Low Shorted to Voltage Test

b. No. Go to Test 3.

1. Test voltage between BOB [78B-2] terminal 13 and ground.

3. Signal Wire Short to Voltage Test

2. Is voltage greater than 1.0V?

1. Turn IGN ON.

a. Yes. Repair short to voltage on (GY/W) wire.

2. Test voltage between BOB [78-1] terminal 7 and ground.

b. No. Replace ECM.

3. Is voltage present?

DTC P0108

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

b. No. Go to Test 4.

PART NUMBER

TOOL NAME

HD-41404

HARNESS CONNECTOR TEST KIT

4. Ground Wire Open Test

HD-50390-1

BREAKOUT BOX

1. Turn IGN ON.

HD-50390-4-P

ECM OVERLAY

2. Connect BREAKOUT BOX (Part No. HD-50390-1) to wire

harness [78B-1] and [78B-2], leaving EMC [78A-1] and

[78A-2] disconnected. See 1.2 DIAGNOSTIC TOOLS.

Table 6-13. DTC P0108 Diagnostic Faults

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

POSSIBLE CAUSES

41404), test continuity between [80B] terminal A and BOB

[78-2] terminal 7.

MAP sensor malfunction

Short to voltage

4. Is continuity present?

a. Yes. Replace the MAP sensor.

1. MAP Sensor Test

b. No. Go to Test 5.

1. Turn IGN OFF.

5. IAC B High Shorted to Voltage Test

2. Disconnect MAP sensor [80].

1. Disconnect IAC [87].

3. Clear DTC.

2. Turn IGN ON.

4. Start engine.

3. Test voltage between BOB [78B-2] terminal 12 and ground.

5. Turn IGN OFF.

4. Is voltage greater than 1.0V?

6. Check DTCs.

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

7. Did DTC reset?

b. No. Go to Test 6.

a. Yes. Go to Test 2.

b. No. Replace MAP sensor.

6. B Low Shorted to Voltage Test

1. Test voltage between BOB [78B-2] terminal 13 and ground.

2. Signal Wire Short to 5V Test

2. Is voltage greater than 1.0V?

1. Turn IGN OFF.

a. Yes. Repair short to voltage on (GY/W) wire.

2. Connect BREAKOUT BOX (Part No. HD-50390-1) to wire

harness [78B-1] and [78B-2], leaving ECM [78A-1] and

b. No. Replace ECM.

[78A-2] disconnected. See 1.2 DIAGNOSTIC TOOLS.

6-20 2013 Softail Diagnostics: Engine Management

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DTC P0112,

P0113

6.7

driveability problems. The sensor temperatures should be

DESCRIPTION AND OPERATION

within 10 degrees of each other.

The ECM supplies and monitors a voltage signal on [78-2]

•

A faulty sensor can negatively affect the signal voltage of

terminal 6 to one side of the IAT sensor. The other side of the

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

IAT sensor is connected to a common sensor ground, which

wiring passes the following tests, disconnect one sensor

is also connected to the ECM [78-2] terminal 7.

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

The IAT sensor is a thermistor device, meaning that at a spe-

present. Additional DTCs will be set as each sensor is

cific temperature, it will have a specific resistance across its

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

terminals. As this resistance varies, so does the voltage at [78-

form this test before replacing a component.

2] terminal 6.

•

At high temperatures, the resistance of the sensor is very

ed03338

low, which effectively lowers the signal voltage on [78-2]

terminal 6.

•

At low temperatures, the resistance is very high, allowing

the voltage to rise close to 5V.

The ECM monitors this voltage to compensate for various

operating conditions.

Table 6-14. Code Description

DTC

DESCRIPTION

P0112

IAT sensor low/shorted

P0113

IAT sensor high/open

Diagnostic Tips

An intermittent may be caused by a poor connection, rubbed

through wire insulation or an open wire inside the insulation.

Check the following conditions:

•

Poor connection: Inspect ECM and harness connector

[78-1] and

[78-2] for backed out terminals, improper

mating, inoperative locks, improperly formed or damaged

1. Rear fuel injector [85]

terminals, poor terminal-to-wire connection and damaged

2. IAC [87]

harness.

3. Front fuel injector [84]

4. Active intake solenoid [178]

•

Perform 1.3 DIAGNOSTICS AND TROUBLESHOOTING,

5. TPS [88]

Wiggle Test to locate intermittents: If connections and

6. IAT sensor [89]

harness check out OK, use a multimeter to check the IAT

7. MAP sensor [80]

sensor voltage while moving related connectors and wiring

harness. If the failure is induced, the IAT voltage will

Figure 6-12. Between Cylinders Right Side

change.

•

Shifted sensor resistance value: Compare the temper-

Connector Information

atures of the ET and IAT sensors with the engine at

For additional information about the connectors in the following

ambient temperature in order to evaluate the possibility

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

of a shifted (out of calibration) sensor which may result in

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

2013 Softail Diagnostics: Engine Management 6-21

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em00996

5V Sensor Power

R/W

VSS

VSS Input

LGN/Y

Ground

BK/GN

[65A] [65B]

5V Sensor Ground

BK/W

MAP

MAP Input

Sensor

5V Sensor Power

R/W

To BCM

[80A] [80B]

5V Sensor Power

R/W

TPS

5V Sensor Ground

BK/W

TPS

GN/V

[88A] [88B]

System Power

R/GN

Rear HO2

Rear O2 Heater Ground

BK/PK

Sensor

Rear O2 Sensor

GY/BN

5V Sensor Ground

BK/W

[138B] [138A]

5V Sensor Ground

R/W

JSS

JSS Signal

LGN/GY

(HDI)

Sensor Ground

BK/GN

[133A] [133B]

System Power

R/GN

Front HO2

Front O2 Heater Ground

BK/O

Sensor

Front O2 Sensor

GN/BN

5V Sensor Ground

BK/W

[138B] [138A]

IAT

GN/GY

IAT

Sensor

5V Sensor Ground

BK/W

[89A] [89B]

ET Sensor

Sensor

5V Sensor Ground

BK/W

[90A] [90B]

GND 1

[78B-1]

[78B-2]

[78A-1]

[78A-2]

ECM

Figure 6-13. Sensor Circuit

6-22 2013 Softail Diagnostics: Engine Management

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DTC P0112

DTC P0113

PART NUMBER

TOOL NAME

PART NUMBER

TOOL NAME

HD-41404

HARNESS CONNECTOR TEST KIT

HD-41404

HARNESS CONNECTOR TEST KIT

HD-50390-1

BREAKOUT BOX

HD-50390-1

BREAKOUT BOX

HD-50390-4

ECM CABLE

HD-50390-4

ECM CABLE

HD-50390-4-P

ECM OVERLAY

HD-50390-4-P

ECM OVERLAY

Table 6-15. DTC P0112 Diagnostic Faults

Table 6-16. DTC P0113 Diagnostic Faults

POSSIBLE CAUSES

IAT sensor malfunction

Short to ground in 5V reference circuit

Open or short to voltage in 5V reference circuit

1. IAT Signal Voltage Test

NOTE

Vehicle and sensor must be at ambient room temperature

1. Turn IGN OFF.

before starting diagnostic test.

2. Disconnect IAT sensor [89].

1. IAT Sensor Test

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

1. Turn IGN OFF.

41404), test voltage between [89B] terminal 1 (GN/GY)

wire and ground.

2. Disconnect IAT sensor [89].

4. Turn IGN ON.

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

41404), test resistance between [89A] terminals 1 (GN/GY)

5. Is voltage greater than 6V?

wire and 2 (BK/W) wire.

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

4. Is resistance between 500-5000?

b. No. Go to Test 2.

a. Yes. Go to Test 2.

2. Signal Wire Open Test

b. No. Replace IAT sensor.

1. Turn IGN OFF.

2. Signal Grounded Test

2. Connect BREAKOUT BOX (Part No. HD-50390-1) and

1. Connect BREAKOUT BOX (Part No. HD-50390-1) and

ECM CABLE (Part No. HD-50390-4) to wiring harness

[78B-1] and [78B-2], leaving ECM [78A-1] and [78A-2]

disconnected. See 1.2 DIAGNOSTIC TOOLS.

3. Verify ECM OVERLAY (Part No. HD-50390-4-P) is in

2. Verify ECM OVERLAY (Part No. HD-50390-4-P) is in

position on BOB.

4. Test continuity between [89B] terminal 1 (GN/GY) and

3. Test continuity between BOB [78-2] terminals

6 and

BOB [78-2] terminal 6.

ground.

5. Is continuity present?

4. Is continuity present?

a. Yes. Go to Test 3.

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

b. No. Repair open circuit.

b. No. Go to Test 3.

3. Open Ground Wire Test

3. Signal Wire Shorted to Sensor Ground

1. Test continuity between BOB [78-2] terminal 7 and [89B]

Test

terminal 2 (BK/W) wire.

1. Test continuity between BOB [78-2] terminals 6 and 7.

2. Is continuity present?

a. Yes. Go to Test 4.

a. Yes. Repair short between [89B] terminals 1 (GN/GY)

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

wire and 2 (BK/W) wire.

4. IAT Sensor Signal Wire Shorted to Sensor

b. No. Replace ECM.

Power Test

1. Test continuity between BOB [78-2] terminals 6 and 9.

2013 Softail Diagnostics: Engine Management 6-23

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DTC P0117,

P0118

6.8

DESCRIPTION AND OPERATION

Connector Information

The ECM supplies and monitors a voltage signal from [78-2]

For additional information about the connectors in the following

terminal 8 to one side of the ET sensor. The other side of the

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

ET sensor is connected to a common sensor ground. The

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

ground is also connected to the ECM [78-2] terminal 7.

ed03337

The ET sensor is a thermistor device. At a specific temperature

it will have a specific resistance across its terminals. As this

resistance varies, so does the voltage on ECM [78-2] terminal

•

At high temperatures, the resistance of the sensor is very

low. This lowers the signal voltage on ECM [78-2] terminal

•

At low temperatures, the resistance is very high. This

allows the voltage to rise close to 5V.

The ECM monitors this voltage to compensate for various

operating conditions. The ECM also uses the sensor input as

a reference for determining IAC pintle position.

Table 6-17. Code Description

DTC

DESCRIPTION

P0117

ET sensor shorted low

P0118

ET sensor high/open

Diagnostic Tips

1. ET sensor [90]

Once the engine is started, the temperature should rise steadily

2. Horn [122]

to operating temperature.

Figure 6-14. Horn and ET Sensor: Except FXS/B

An intermittent may be caused by a poor connection, rubbed

through wire insulation or an inoperative wire inside the insula-

tion.

ed03323

Check the following conditions:

•

Poor connection: Inspect ECM harness connector [78-

1] and [78-2] for backed out terminals, improper mating,

inoperative locks, improperly formed or damaged ter-

minals, poor terminal-to-wire connection and damaged

harness.

•

Perform 1.3 DIAGNOSTICS AND TROUBLESHOOTING,

Wiggle Test to locate intermittents: If connections and

harness check out OK, use a multimeter to check the

engine temperature reading while moving related con-

nectors and wiring harness. If the failure is induced, the

engine temperature display will change.

•

Shifted sensor resistance value: Measure ET and IAT

sensor temperatures with a cool engine. The sensor tem-

1. ET sensor [90]

peratures should be within 10 °F (5.6 °C) of each other.

2. Ignition switch

If the two sensors are not within the specified range

3. Ignition coil

replace the inaccurate sensor.

4. Ignition coil [83]

Figure 6-15. Behind Ignition Switch: FXS/B

2013 Softail Diagnostics: Engine Management 6-25

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em00996

5V Sensor Power

R/W

VSS

VSS Input

LGN/Y

Ground

BK/GN

[65A] [65B]

5V Sensor Ground

BK/W

MAP

MAP Input

Sensor

5V Sensor Power

R/W

To BCM

[80A] [80B]

5V Sensor Power

R/W

TPS

5V Sensor Ground

BK/W

TPS

GN/V

[88A] [88B]

System Power

R/GN

Rear HO2

Rear O2 Heater Ground

BK/PK

Sensor

Rear O2 Sensor

GY/BN

5V Sensor Ground

BK/W

[138B] [138A]

5V Sensor Ground

R/W

JSS

JSS Signal

LGN/GY

(HDI)

Sensor Ground

BK/GN

[133A] [133B]

System Power

R/GN

Front HO2

Front O2 Heater Ground

BK/O

Sensor

Front O2 Sensor

GN/BN

5V Sensor Ground

BK/W

[138B] [138A]

IAT

GN/GY

IAT

Sensor

5V Sensor Ground

BK/W

[89A] [89B]

ET Sensor

Sensor

5V Sensor Ground

BK/W

[90A] [90B]

GND 1

[78B-1]

[78B-2]

[78A-1]

[78A-2]

ECM

Figure 6-16. Sensor Circuit

6-26 2013 Softail Diagnostics: Engine Management

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DTC P0117

DTC P0118

PART NUMBER

TOOL NAME

PART NUMBER

TOOL NAME

HD-41404

HARNESS CONNECTOR TEST KIT

HD-41404

HARNESS CONNECTOR TEST KIT

HD-50390-1

BREAKOUT BOX

HD-50390-1

BREAKOUT BOX

HD-50390-4

ECM CABLE

HD-50390-4

ECM CABLE

HD-50390-4-P

ECM OVERLAY

HD-50390-4-P

ECM OVERLAY

Table 6-18. DTC P0117 Diagnostic Faults

Table 6-19. DTC P0118 Diagnostic Faults

POSSIBLE CAUSES

ET sensor malfunction

Short to ground in 5V reference circuit

Open or short to voltage in 5V reference circuit

1. ET Sensor Test

1. ET Signal Voltage Test

NOTE

1. Turn IGN OFF.

Vehicle and sensor must be at ambient room temperature

2. Disconnect ET sensor [90].

before starting diagnostic test.

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

1. Turn IGN OFF.

41404), test voltage between [90B] terminal A (GN) wire

and ground.

2. Disconnect ET sensor [90].

4. Turn IGN ON.

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

41404), test the resistance between [90A] terminals A

5. Is voltage greater than 6V?

(GN) wire and B (BK/W) wire.

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

4. Is the resistance reading between 900-10,000 Ohms?

b. No. Go to Test 2.

a. Yes. Go to Test 2.

2. ET Sensor Signal Wire Open Test

b. No. Replace ET sensor.

1. Turn IGN OFF.

2. ET Sensor Signal Wire Shorted to Ground

2. Connect BREAKOUT BOX (Part No. HD-50390-1) and

Test

ECM CABLE (Part No. HD-50390-4) to wiring harness

1. Test resistance between [90B] terminal A (GN) wire and

[78B-1] and [78B-2], leaving ECM [78A-1] and [78A-2]

ground.

disconnected. See 1.2 DIAGNOSTIC TOOLS.

2. Is resistance less than 1 Ohm?

3. Verify ECM OVERLAY (Part No. HD-50390-4-P) is in

position on BOB.

a. Yes. Repair short to ground in (GN) wire.

4. Test continuity between [90B] terminal A (GN) wire and

b. No. Go to Test 3.

BOB [78-2] terminal 8.

3. ET Sensor Signal Wire Shorted to Sensor

5. Is continuity present?

Ground Test

a. Yes. Go to Test 3.

1. Connect BREAKOUT BOX (Part No. HD-50390-1) and

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

ECM CABLE (Part No. HD-50390-4) to wiring harness

[78B-1] and [78B-2], leaving ECM [78A-1] and [78A-2]

3. ET Sensor Open Ground Wire Test

disconnected. See 1.2 DIAGNOSTIC TOOLS.

1. Test continuity between [90B] terminal B (BK/W) wire and

2. Verify ECM OVERLAY (Part No. HD-50390-4-P) is in

BOB [78-2] terminal 7.

position on BOB.

2. Is continuity present?

3. Test continuity between BOB [78-2] terminals 8 and 7.

a. Yes. Go to Test 4.

4. Is continuity present?

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

a. Yes. Repair short between [90B] terminals A (GN)

wire and B (BK/W) wire.

4. ET Sensor Signal Wire Shorted to Sensor

b. No. Replace ECM.

Power Test

1. Test continuity between BOB [78-2] terminals 8 and 9.

2013 Softail Diagnostics: Engine Management 6-27

Harley Davidson Softail Delux FLSTN BIKE 2011-2015. Electrical Diagnostics - page 12