Content .. 6 7 8 9 ..

Harley Davidson Softail Delux FLSTN BIKE 2011-2015. Electrical Diagnostics - page 8

HOME

em01418

Left

Right

BCM

STT

[19B]

[18B]

[19A]

[18A]

[242A]

[259A]

[242B]

L4 M2

[259B]

Battery

Power

Distribution

LP/

Stop/Tail

[91A]

R/Y

DLC

[40B]

[40A]

[38A] [38B]

Position

Lamp

BE/BK

O/W

[29B] [29A]

Except

Canada

[179B] [179A]

Canada

[32A]

R/GN

[32B]

Active

Exhaust

Tip

Lamp

[95B] [95A]

[143A] [143B]

R/GN

Purge

Solenoid

[178B] [178A]

[120B]

[117B]

[20A]

Active

R/GN

Intake

[120A]

[117A]

[20B]

[84A] [84B]

[85B] [85A]

Oil

[141B]

Front Fuel

Rear Fuel

Pressure

R/GN

Injector

Switch

[141A]

Fuel

Gauge

[138B] [138A]

[137A] [137B]

[31A]

Fuel

Front

Rear

R/GN

Pump

HO2S

[203FB] [203FA]

[203RA] [203RB]

Front ACR

R/GN

Rear ACR

[83A] [83B]

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

Ignition

R/GN

ECM

Coil

Figure 5-6. Ignition and Accessory Power Distribution: FLS

5-6 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

DTC B2112

1. Accessory Power Circuit Short to Ground

Test

PART NUMBER

TOOL NAME

1. Turn IGN OFF.

HD-41404

HARNESS CONNECTOR TEST KIT

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

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

[242B] leaving [242A] disconnected. See 1.2 DIAGNOSTIC

Table 5-2. DTC B2112 Diagnostic Faults

TOOLS.

POSSIBLE CAUSES

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

Short to battery in the accessory power circuit

position on BOB.

1. Accessory Power Circuit Short to Voltage

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

41404), test resistance between BOB terminal M2 and

Test

ground.

1. Turn IGN OFF.

5. Is resistance less than 2 Ohms?

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

a. Yes. Go to Test 2.

41404), test voltage between DLC [91A] terminal 5 and

ground.

b. No. Concern is intermittent. See 1.3 DIAGNOSTICS

AND TROUBLESHOOTING, Wiggle Test.

3. Is battery voltage present?

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

2. Accessory Circuit Test

b. No. Go to Test 2.

1. Inspect for any accessories connected to the accessory

circuit.

2. BCM Test

2. Disconnect any accessories on the circuit.

1. Clear DTC.

3. Test resistance between BOB terminal M2 and ground.

2. Turn IGN ON-OFF.

4. Is resistance less than 2 Ohms?

3. Check for DTCs.

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

4. Did DTC return?

b. No. Go to Test 3.

a. Yes. Replace BCM.

3. BCM Test

b. No. Concern is intermittent. Accessory devices may

have caused DTC to set. Inspect and repair as

1. Leave all aftermarket accessories disconnected.

needed.

2. Connect BCM [242A].

DTC B2113, B2114

3. Clear DTC.

4. Turn IGN ON.

PART NUMBER

TOOL NAME

5. Did DTC return?

HD-41404

HARNESS CONNECTOR TEST KIT

a. Yes. Replace BCM.

HD-50390-1

BREAKOUT BOX

b. No. Accessory devices may have caused DTC to set.

HD-50390-2

BCM CABLE

Inspect and repair as needed.

HD-50390-2-P

BCM OVERLAY

Table 5-3. DTC B2113, B2114 Diagnostic Faults

POSSIBLE CAUSES

Excessive current draw in accessory power circuit

Short to ground in the accessory power circuit

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-7

HOME

HORN:

DTC B2126, B2127, B2128, B2129

5.2

DESCRIPTION AND OPERATION

ed03337

The horn is powered by the BCM from terminal E4 and

grounded through GND 2. When the horn switch is pressed,

a CAN signal is sent to the BCM. The BCM then supplies power

to the horn over the (R/V) wire.

The horn switch is a push button switch on the left handlebar

controls. The LHCM sends a signal to the BCM over the CAN

bus when the horn switch is pressed. The horn switch is dia-

gnosed with the other switches in the hand controls. See

5.9 DTC B1103, B1153, B2210, B2212, B2250, B2251, B2252,

B2253, B2254, B2260, B2261, B2262, B2263, B2270.

NOTE

If the horn button is pressed for more than 10 seconds, the

BCM deactivates the horn to protect it from damage. Checking

horn output from the BCM has to be done within 10 seconds

of pressing the horn button.

See Figure 5-7 and Figure 5-8. The horn is located on the left

side of the vehicle between the cylinders (except FXS/B) or

between the front frame tubes (FXS/B).

Table 5-4. Code Description

1. ET sensor [90]

DTC

DESCRIPTION

2. Horn [122]

B2126

Horn output open

Figure 5-8. Horn and ET Sensor: Except FXS/B

B2127

Horn output shorted high

B2128

Horn output shorted low

Conditions for Setting

B2129

Horn output overloaded

Press the horn switch to activate the horn in order to set these

DTCs.

ed03290

•

DTC B2126 will set if the horn circuit draws less than 350

milliamps.

•

DTC B2129 will set if the horn circuit draws more than 5

Amps.

Diagnostic Tips

There will not be a code set if the horn switch is always open.

If the horn will not function when the switch is pressed but the

other switches on the LHCM work normally, see 5.9 DTC

B1103, B1153, B2210, B2212, B2250, B2251, B2252, B2253,

B2254, B2260, B2261, B2262, B2263, B2270.

Connector Information

For additional information about the connectors in the following

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

1. Horn [122]

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

2. Horn

Figure 5-7. Horn: FXS/B

5-8 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

em00856

Left Hand

Control Module

Horn

Switch

[24B] [24A]

W/BK

W/R

W/BK

BCM

GND 1

R/V

[122B-2]

[122B-1]

Chassis Grounds

[122A-2]

[122A-1]

Horn

Figure 5-9. Horn

NOTE

DTC B2126

If the horn button is pressed for more than 10 seconds, the

BCM deactivates the horn to protect it from damage. Checking

PART NUMBER

TOOL NAME

horn output from the BCM has to be done within 10 seconds

HD-41404

HARNESS CONNECTOR TEST KIT

of pressing the horn button.

HD-50390-1

BREAKOUT BOX

2. Is battery voltage present?

HD-50390-2

BCM CABLE

a. Yes. Repair open in the (BK) ground circuit.

HD-50390-2-P

BCM OVERLAY

b. No. Go to Test 3.

3. Power Circuit Open Test

Table 5-5. DTC B2126 Diagnostic Faults

1. Turn IGN OFF.

POSSIBLE CAUSES

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

Open in horn ground circuit

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

Open in horn power circuit

[242B] and [242A]. See 1.2 DIAGNOSTIC TOOLS.

Horn malfunction

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

position on BOB.

1. Horn Test

4. While pressing the horn switch, test voltage between BOB

1. Turn IGN OFF.

terminal E4 and ground.

2. Disconnect horn [122].

5. Is battery voltage present?

3. Turn IGN ON.

a. Yes. Repair open in (R/V) wire.

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

b. No. Replace BCM.

41404), test voltage between [122B-1] and [122B-2] while

pressing the horn switch.

5. Is battery voltage present?

a. Yes. Replace horn.

b. No. Go to Test 2.

2. Ground Circuit Open Test

1. While pressing the horn switch, test voltage between

[122B-1] terminal 1 and ground.

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-9

HOME

4. Did DTC B2127 set?

DTC B2127

a. Yes. Replace BCM.

PART NUMBER

TOOL NAME

b. No. Concern is intermittent. See 1.3 DIAGNOSTICS

HD-41404

HARNESS CONNECTOR TEST KIT

AND TROUBLESHOOTING, Wiggle Test.

HD-50390-1

BREAKOUT BOX

DTC B2128, B2129

HD-50390-2

BCM CABLE

HD-50390-2-P

BCM OVERLAY

PART NUMBER

TOOL NAME

HD-50423

0.6 MM TERMINAL EXTRACTOR

HD-41404

HARNESS CONNECTOR TEST KIT

TOOL

Table 5-7. DTC B2128, B2129 Diagnostic Faults

Table 5-6. DTC B2127 Diagnostic Faults

POSSIBLE CAUSES

Accessory horn overloading circuit

Short to voltage in horn power circuit

Short to ground in horn power circuit

1. Horn Power Circuit Short to Voltage Test

Horn malfunction

1. Turn IGN OFF.

1. Horn Circuit Test

2. Using

0.6 MM TERMINAL EXTRACTOR TOOL (Part

1. Turn IGN OFF.

No. HD-50423), remove terminal E4 (R/V) wire from BCM

harness connector [242B].

2. Disconnect horn [122].

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

3. Disconnect BCM [242].

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

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

[242B] and [242A]. See 1.2 DIAGNOSTIC TOOLS.

41404), test continuity between [122B-1] terminal 1 and

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

ground.

position on BOB.

5. Is continuity present?

5. Turn IGN ON.

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

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

b. No. Go to Test 2.

41404), test voltage between extracted terminal E4 and

ground.

2. DTC Test

7. Is voltage present?

1. Connect [242].

a. Yes. Repair short to voltage in horn power circuit

2. Clear DTC.

(R/V) wire.

3. Turn IGN ON.

b. No. Go to Test 2.

4. Press horn switch.

2. DTC Test

5. Check DTCs.

1. Clear DTCs.

6. Did the DTC reset?

2. Turn IGN ON.

a. Yes. Replace BCM.

3. Check DTCs.

b. No. Replace horn.

5-10 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

TURN SIGNALS

5.3

DESCRIPTION AND OPERATION

Automatic Cancellation

The BCM controls the turn signal functions, including the hazard

Press the left or right turn switch to activate automatic turn

lamps and turn signal cancellation feature. The BCM has sep-

signal cancellation. There is no need to hold the turn switch in

arate controls for each of the turn signals. This allows the BCM

when approaching the turn. The BCM will not cancel the signal

to set DTCs for each turn signal individually.

before the turn is actually completed.

The front turn signals are controlled two different ways

•

When the turn signal switch is released, the system starts

depending on the wire routing of the front turn signals. If the

a 20 count. As long as the vehicle is traveling above 8

front turn signals are wired to the LHCM and RHCM, then the

mph (13 km/h), the directional will always cancel after 20

power and ground for the turn signal comes from the LHCM

flashes if the system does not recognize any other input.

or RHCM. The BCM only controls the rate of the flash of the

•

If the vehicle speed drops to 8 mph (13 km/h) or less,

turn signal by sending a message over the CAN bus to the

including stopped, the directionals will continue to flash.

hand control modules.

Counting will resume when vehicle speed reaches 8 mph

See Figure 5-10. If the front turn signals are not wired to the

(13 km/h) and will automatically cancel when the count

LHCM and RHCM, then the BCM controls the front turn signals,

total equals 20 as stated above.

as well as the rear turn signals. In this configuration, the BCM

•

The turn signals may cancel within two seconds upon turn

sends power to the turn signals directly over the specific wire

completion depending on vehicle lean angle during turn.

for each signal. The BCM has different turn signal DTCs

An accelerometer inside the BCM cancels the signal after

depending on vehicle configuration.

the vehicle has been returned to an upright position.

ed03296

NOTE

The bank angle cancellation function has an automatic calibra-

tion feature. Ride the vehicle for 0.25 mile (0.4 km) at steady

speeds (upright) to calibrate the system. This calibration pro-

cess optimizes the performance of the bank angle function.

This automatic calibration is performed automatically every

time the vehicle is started and ridden.

Four-Way Flashing

Use the following method to activate the four-way flashers:

1. With the ignition switch ON or in ACC, press the hazard

warning switch.

NOTE

To activate or deactivate hazards on vehicle equipped with

1. Right hand controls [22-1]

security system, the fob must be within range of the vehicle.

2. Right hand controls [22-2]

3. Front turn signals [31]

2. Turn the ignition switch OFF (the security system will arm

if equipped). The four-way flashers will continue for two

Figure 5-10. Under Fuel Tank Right Side

hours.

3. To cancel four-way flashing, disarm the security system

In either configuration, the LHCM and RHCM send messages

if equipped, turn the ignition switch ON or to ACC and

to the BCM over the CAN bus when either of the turn signal

press the hazard warning switch.

switches or hazard warning switch are pressed. The BCM will

also set codes if it determines a switch is stuck in the pressed

NOTE

position for longer than two minutes. The switch DTCs are

To activate or deactivate hazards on vehicle equipped with

diagnosed with the other hand control module switches. See

security system, the fob must be within range of the vehicle.

5.9 DTC B1103, B1153, B2210, B2212, B2250, B2251, B2252,

B2253, B2254, B2260, B2261, B2262, B2263, B2270.

This system allows a stranded vehicle to be left in the four-way

flashing mode and secured until help is found.

Manual Cancellation

If the security system is disarmed while the four-way flashers

To stop the turn signals from flashing, briefly press the turn

are active, the lights will flash as follows:

signal switch a second time.

1. BCM stops four-way flashing mode. Vehicle sits for one

If signaling to turn in one direction, pressing the switch for the

second with turn signals off.

opposite turn signal will cause the first signal to cancel and the

2. BCM performs disarming confirmation (one flash).

opposite side to begin.

3. Vehicle sits for one second with turn signals off.

4. Vehicle restarts four-way flashing mode.

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-11

HOME

Tip Over Detection Operation

Tip Over Reset

The BCM uses an internal accelerometer to monitor vehicle

1. Return the vehicle to an upright position.

position. Under normal driving conditions, the BCM uses the

2. Cycle the IGN OFF-ON before restarting the vehicle.

accelerometer along with speed input provided from the ECM

to know when to automatically cancel the turn signals after a

Connector Information

turn. The BCM will disable turn signal lamps, accessory power

For additional information about the connectors in the following

and starter activation and will shut down the ignition and the

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

fuel pump if the vehicle is tipped over. The odometer will display

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

"TIP" when a tip-over condition is present.

5-12 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

em01353

Battery

Hazard

Fuse

Left Turn

Switch

LHCM

RHCM

Switch

Right Turn

Switch

[24B] [24A]

[22A-1] [22B-1]

W/BK

W/R

BK/GN

R/O

[20A] [20B]

BCM

Speedometer

CAN High

W/R

CAN High

CAN Low

W/BK

CAN Low

Right Front Turn Signal

BE/O

R/O

Power

BK/GN

Right Turn Indicator

Left Front Turn Signal

BE/PK

Ground

Right Rear Turn Signal

BE/BN

BE/PK

Left Turn Indicator

Left Rear Turn Signal

BE/V

[39B] [39A]

BE/PK

Left Turn

Indicator

BE/O

Right Turn

Lamps

R/O

Power

[21B] [21A]

[31A]

[31B]

GND 1

Left Front

Turn Lamp

Right Front

Turn Lamp

GND 2

[7A]

FXST, FLSTSB

FLSTN

FLST/C/F

[7B]

[94B]

[94A]

Circuit

Board

[18A]

[19A]

[18A]

[19A]

[18A]

[19A]

[18B]

[19B]

[18B]

[19B]

[18B]

[19B]

Right

Left

Right

Left

Right

Left

Rear

Turn

Signal

Lamp

Figure 5-11. Turn Signal Circuit: Except FXS/B and FLS

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-13

HOME

em01522

Front Left

Front Right

Turn Lamp

Battery

Fuse

Hazard

LHCM

Left Turn

Switch

RHCM

Switch

Right Turn

Switch

[24B] [24A]

[22A-1] [22B-1]

W/BK

W/R

BK/GN

R/O

[20A] [20B]

Speedometer

BK/GN

Ground

BCM

R/O

Power

CAN High

W/R

CAN High

CAN Low

W/BK

CAN Low

Right Front Turn Signal

BE/O

Right Turn Indicator

Left Front Turn Signal

BE/PK

Left Turn Indicator

Right Rear Turn Signal

BE/BN

[39B] [39A]

Left Rear Turn Signal

BE/V

BE/PK

Left Turn

Indicator

BE/PK

Not

BE/O

Right Turn

Lamps

Used

BE/O

R/O

Power

GND 1

GND 2

[31A]

FXS/B

Rear Left

[19B]

[18B]

Rear Right

Turn Lamp

BE/V

BE/BN

[19A]

[18A]

FLS

[19B]

[18B]

Figure 5-12. Turn Signal Circuit: FXS/B and FLS

2. Is BCM mounted correctly?

WILL NOT CANCEL UPON TURN

a. Yes. Go to Test 2.

COMPLETION, NO DTCS

b. No. Mount correctly.

Table 5-8. Will Not Cancel Upon Turn Completion, No

DTCs Diagnostic Faults

2. Correct Configuration Test

POSSIBLE CAUSES

1. Check if BCM is configured correctly. See 5.14 SERVICE

AND EMERGENCY FUNCTIONS AND CONFIGURA-

Conditions to self cancel not met

TIONS.

Improper configuration

2. Is BCM configured correctly?

1. BCM Mounting Test

a. Yes. Go to Test 3.

1. Verify BCM is mounted correctly.

b. No. Select proper vehicle configuration.

5-14 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

4. Do turn signals cancel?

3. Turn Signals Cancel Test

a. Yes. System operating properly.

1. Operate vehicle at a speed greater than 8 mph (13 km/h)

in a straight line.

b. No. Go to Test 4.

2. Activate either turn signal.

4. Speedometer Test

3. Turn signals should cancel after 20 flashes.

1. Does speedometer register vehicle speed?

a. Yes. Replace BCM. (6773)

b. No. See 2.1 INITIAL DIAGNOSTICS.

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-15

HOME

DTC B1101,

B1151

5.4

DESCRIPTION AND OPERATION

ed03294

These DTCs are specific for vehicles with the front turn signals

wired to the LHCM and RHCM. If the turn signals are not wired

in this configuration, a different set of codes are used to

determine turn signal circuit malfunction.The LHCM and RHCM

control the turn signals, but any DTCs related to the turn signals

are reported by the BCM.

Before troubleshooting errors after relocating front turn signals,

perform following steps:

1. Turn IGN ON.

2. Activate hazard lights for 10 flashes.

3. Deactivate hazards.

4. Activate hazard lights for 10 flashes.

1. Head lamp [38]

5. Deactivate hazards.

2. Front WSS [167]

6. Clear DTCs.

3. Instruments [20]

4. Left hand control [24]

7. Turn IGN OFF, ON, activate hazard lights.

Figure 5-13. Under Fuel Tank Left Side

8. Verify DTCs.

NOTE

Conditions for Setting

This is necessary for the BCM to validate the proper front

After clearing DTCs, test inoperative turn signal. Verify DTC

lighting configuration and which module is actually controlling

does not return.

them.

ed03296

Table 5-9. Code Description

DTC

DESCRIPTION

B1101

LHCM turn signal bulb out

B1151

RHCM turn signal bulb out

1. Right hand controls [22-1]

2. Right hand controls [22-2]

3. Front turn signals [31]

Figure 5-14. Under Fuel Tank Right Side

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.

5-16 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

em01522

Front Left

Front Right

Turn Lamp

Battery

Fuse

Hazard

LHCM

Left Turn

Switch

RHCM

Switch

Right Turn

Switch

[24B] [24A]

[22A-1] [22B-1]

W/BK

W/R

BK/GN

R/O

[20A] [20B]

Speedometer

BK/GN

Ground

BCM

R/O

Power

CAN High

W/R

CAN High

CAN Low

W/BK

CAN Low

Right Front Turn Signal

BE/O

Right Turn Indicator

Left Front Turn Signal

BE/PK

Left Turn Indicator

Right Rear Turn Signal

BE/BN

[39B] [39A]

Left Rear Turn Signal

BE/V

BE/PK

Left Turn

Indicator

BE/PK

Not

BE/O

Right Turn

Lamps

Used

BE/O

R/O

Power

GND 1

GND 2

[31A]

FXS/B

Rear Left

[19B]

[18B]

Rear Right

Turn Lamp

BE/V

BE/BN

[19A]

[18A]

FLS

[19B]

[18B]

Figure 5-15. Turn Signal Circuit: FXS/B and FLS

2. Is the bulb good?

DTC B1101, B1151

a. Yes. Go to Test 2.

Table 5-10. DTC B1101, B1151 Diagnostic Faults

b. No. Replace bulb.

POSSIBLE CAUSES

2. Socket and Wiring Inspection Test

Bulb malfunction

1. Inspect bulb socket and wiring to the turn signal for

damage or poor connections.

1. Bulb Test

1. Inspect inoperative turn signal bulb.

2. Were any issues found?

a. Yes. Repair as needed.

b. No. Replace the inoperative side module (LHCM or

RHCM).

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-17

HOME

DTC

B2141, B2143, B2144, B2146, B2148, B2149

5.5

DESCRIPTION AND OPERATION

ed03296

See Figure 5-16. These DTCs only apply to vehicles where

the turn signals are not wired directly to the hand control

modules.

The turn signals are controlled by the BCM. The BCM supplies

power to the turn signals and controls the flash rate of the turn

signals through the turn signals individual power circuit.

When the turn signal or hazard warning lamp switch is pressed,

the hand control module sends a message over the CAN bus

to the BCM. The BCM then controls the power to the turn

signal. The turn signals have a constant ground.

Before troubleshooting errors after relocating front turn signals,

perform following steps:

1. Turn IGN ON.

Right hand controls [22-1]

Right hand controls [22-2]

2. Activate hazard lights for 10 flashes.

Front turn signals [31]

3. Deactivate hazards.

Figure 5-16. Under Fuel Tank Right Side

4. Activate hazard lights for 10 flashes.

5. Deactivate hazards.

Table 5-11. Code Description

6. Clear DTCs.

DTC

DESCRIPTION

7. Turn IGN OFF, ON, activate hazard lights.

B2141

Left front turn signal output open

8. Verify DTCs.

B2143

Left front turn signal output shorted low

NOTE

B2144

Left front turn signal output overloaded

This is necessary for the BCM to validate the proper front

B2146

Right front turn signal output open

lighting configuration and which module is actually controlling

B2148

Right front turn signal output shorted low

them.

B2149

Right front turn signal output overloaded

Conditions for Setting

After clearing DTCs, test inoperative turn signal. Verify DTC

does not return.

•

DTC B2141 or B2146 will set if the corresponding front

turn signal circuit draws less than 120 milliamps.

•

DTC B2144 or B2149 will set if the corresponding front

turn signal circuit draws more than 3 Amps.

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.

5-18 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

em01353

Battery

Hazard

Fuse

Left Turn

Switch

LHCM

RHCM

Switch

Right Turn

Switch

[24B] [24A]

[22A-1] [22B-1]

W/BK

W/R

BK/GN

R/O

[20A] [20B]

BCM

Speedometer

CAN High

W/R

CAN High

CAN Low

W/BK

CAN Low

Right Front Turn Signal

BE/O

R/O

Power

BK/GN

Right Turn Indicator

Left Front Turn Signal

BE/PK

Ground

Right Rear Turn Signal

BE/BN

BE/PK

Left Turn Indicator

Left Rear Turn Signal

BE/V

[39B] [39A]

BE/PK

Left Turn

Indicator

BE/O

Right Turn

Lamps

R/O

Power

[21B] [21A]

[31A]

[31B]

GND 1

Left Front

Turn Lamp

Right Front

Turn Lamp

GND 2

[7A]

FXST, FLSTSB

FLSTN

FLST/C/F

[7B]

[94B]

[94A]

Circuit

Board

[18A]

[19A]

[18A]

[19A]

[18A]

[19A]

[18B]

[19B]

[18B]

[19B]

[18B]

[19B]

Right

Left

Right

Left

Right

Left

Rear

Turn

Signal

Lamp

Figure 5-17. Turn Signal Circuit: Except FXS/B and FLS

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-19

HOME

em01522

Front Left

Front Right

Turn Lamp

Battery

Fuse

Hazard

LHCM

Left Turn

Switch

RHCM

Switch

Right Turn

Switch

[24B] [24A]

[22A-1] [22B-1]

W/BK

W/R

BK/GN

R/O

[20A] [20B]

Speedometer

BK/GN

Ground

BCM

R/O

Power

CAN High

W/R

CAN High

CAN Low

W/BK

CAN Low

Right Front Turn Signal

BE/O

Right Turn Indicator

Left Front Turn Signal

BE/PK

Left Turn Indicator

Right Rear Turn Signal

BE/BN

[39B] [39A]

Left Rear Turn Signal

BE/V

BE/PK

Left Turn

Indicator

BE/PK

Not

BE/O

Right Turn

Lamps

Used

BE/O

R/O

Power

GND 1

GND 2

[31A]

FXS/B

Rear Left

[19B]

[18B]

Rear Right

Turn Lamp

BE/V

BE/BN

[19A]

[18A]

FLS

[19B]

[18B]

Figure 5-18. Turn Signal Circuit: FXS/B and FLS

5-20 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

DTC B2141

DTC B2143, B2144

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-50390-2

BCM CABLE

HD-50390-2

BCM CABLE

HD-50390-2-P

BCM OVERLAY

HD-50390-2-P

BCM OVERLAY

Table 5-12. DTC B2141 Diagnostic Faults

Table 5-13. DTC B2143, B2144 Diagnostic Faults

POSSIBLE CAUSES

Open in left front turn signal ground circuit

Left front turn signal bulb current exceeds 3.0A

Open in left front turn signal power circuit

Accessory lighting overloading circuit

Short to voltage in left front turn signal power circuit

Short to ground in left front turn signal power circuit

Bulb malfunction

1. Bulb Test

1. Turn IGN OFF.

2. Inspect the left front turn signal bulb.

2. Inspect left front turn signal bulb.

3. Is bulb good?

3. Is the bulb good?

a. Yes. Go to Test 2.

b. No. Replace bulb.

2. Power Circuit Short to Ground Test

2. Ground Circuit Open Test

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

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

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

[242B], leaving

[242A] disconnected. See

1.2 DIA-

41404), test continuity between bulb socket ground and

GNOSTIC TOOLS.

ground.

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

2. Is continuity present?

position on BOB.

a. Yes. Go to Test 3.

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

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

41404), with bulb out, test continuity between BOB terminal

J4 and ground.

3. Power Circuit Open Test

4. Is continuity present?

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

a. Yes. Repair short to ground in left front turn signal

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

power circuit (BE/PK) or (V) wire.

[242B], leaving

[242A] disconnected. See

1.2 DIA-

GNOSTIC TOOLS.

b. No. Go to Test 3.

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

3. DTC Test

position on BOB.

1. Connect [242A].

3. Test continuity between BOB terminal J4 and left front

turn signal bulb socket terminal.

2. Clear DTC.

4. Is continuity present?

3. Turn IGN ON.

a. Yes. Replace BCM.

4. Turn on left turn signal.

b. No. Repair open in left front turn signal power circuit

5. With bulb out, check DTCs.

(BE/PK) or (V).

6. Did the DTC B2143 or B2144 reset?

a. Yes. Replace BCM.

b. No. Replace turn signal bulb.

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-21

HOME

DTC B2146

DTC B2148, B2149

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-50390-2

BCM CABLE

HD-50390-2

BCM CABLE

HD-50390-2-P

BCM OVERLAY

HD-50390-2-P

BCM OVERLAY

Table 5-14. DTC B2146 Diagnostic Faults

Table 5-15. DTC B2148, B2149 Diagnostic Faults

POSSIBLE CAUSES

Open in right front turn signal ground circuit

Right front turn signal bulb current exceeds 3.0A

Open in right front turn signal power circuit

Accessory lighting overloading circuit

Short to voltage in right front turn signal power circuit

Short to ground in right front turn signal power circuit

Bulb malfunction

1. Bulb Test

1. Turn IGN OFF.

2. Inspect right front turn signal bulb.

2. Inspect the right front turn signal bulb.

3. Is the bulb good?

a. Yes. Go to Test 2.

b. No. Replace bulb.

2. Power Circuit Short to Ground Test

2. Ground Circuit Open Test

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

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

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

[242B], leaving

[242A] disconnected. See

1.2 DIA-

41404), test continuity between bulb socket ground and

GNOSTIC TOOLS.

ground.

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

2. Is continuity present?

position on BOB.

a. Yes. Go to Test 3.

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

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

41404), with bulb out, test continuity between BOB terminal

J2 and ground.

3. Power Circuit Open Test

4. Is continuity present?

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

a. Yes. Repair short to ground in right front turn signal

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

power circuit (BE/O) or (V) wire.

[242B], leaving

[242A] disconnected. See

1.2 DIA-

GNOSTIC TOOLS.

b. No. Go to Test 3.

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

3. DTC Test

position on BOB.

1. Connect [242A].

3. Test continuity between BOB terminal J2 and right front

turn signal bulb socket terminal.

2. Clear DTC.

4. Is continuity present?

3. Turn IGN ON.

a. Yes. Replace BCM.

4. Turn on right turn signal.

b. No. Repair open in right front turn signal power circuit

5. With bulb removed, check DTCs.

(BE/O) or (V).

6. Did DTC B2148 or B2149 reset?

a. Yes. Replace BCM.

b. No. Replace turn signal bulb.

5-22 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

DTC

B2151, B2153, B2154, B2156, B2158, B2159

5.6

DESCRIPTION AND OPERATION

Conditions for Setting

The rear turn signals are controlled by the BCM. The BCM

After clearing the DTCs, operate the inoperative turn signal to

supplies power to the rear turn signals and controls the flash

verify if the DTC has returned.

rate of the turn signals through the power circuit.

DTC B2151 or B2156 will set if the corresponding rear turn

signal circuit draws less than 120 milliamps. DTC B2154 or

Table 5-16. Code Description

B2159 will set if the corresponding rear turn signal circuit draws

more than 3 Amps.

DTC

DESCRIPTION

B2151

Left rear turn signal output open

B2153

Left rear turn signal output shorted low

B2154

Left rear turn signal output overloaded

B2156

Right rear turn signal output open

B2158

Right rear turn signal output shorted low

B2159

Right rear turn signal output overloaded

ed03300

1. Battery negative

7. ECM [78B-2]

2. Battery

8. DLC [91]

3. Fuse block [64]

9. Battery positive

4. Tail lamp harness to main harness [7]

10.

Rear HO2 sensor [137]

5. ECM [78B-1]

11. Ground [GND1]

6. Security antenna [209]

12. Ground [GND2]

Figure 5-19. Under Seat: Except FXS/B and FLS

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-23

HOME

ed03468

1. Battery negative

9. ECM [78B-2]

2. Battery

10. DLC [91]

3. Tail lamp harness to main harness [40]

11. Fuel sender/pump jumper harness [13]

4. Left rear stop/tail/turn harness to main harness

12. Battery positive

[19]

13. Ground [GND1]

5. Right rear stop/tail/turn harness to main harness

14. Ground [GND2]

[18]

15. Rear HO2 sensor [137]

6. Fuse block [64]

7. ECM [78B-1]

8. Security antenna [209]

Figure 5-20. Under Seat: FXS and FLS

5-24 2013 Softail Diagnostics: Accessories, Horn, Lighting and Security

HOME

ed03415

1. GND 1

7. Fuel pump/sender [13]

2. GND 2

8. Fuse block connector [64]

3. Resistor pack [200] (behind battery)

9. DLC [91]

4. Security antenna connector [209]

10. Left rear lighting [19]

5. Right rear lighting [18]

11. Rear HO2S [137]

6. Tail/LP lamp [45]

Figure 5-21. Under Seat: FXSB

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.

2013 Softail Diagnostics: Accessories, Horn, Lighting and Security 5-25

Content .. 6 7 8 9 ..