DTC B1174:13 [BCM]

id0902f5415300

DESCRIPTION

Front door lock-link switch (passenger-side)/Rear door lock-link switch (LH)/(RH) circuit malfunction
DETECTION CONDITION
•  Open circuit in the front door lock-link switch (passenger-side)/rear door lock-link switch (LH)/(RH) circuit with the front door lock-link switch (passenger-side)/rear door lock-link switch (LH)/(RH) unlocked.
POSSIBLE CAUSE
•  BCM connector or terminals malfunction
•  Open circuit in wiring harness between the following terminals:
―  L.H.D.:
•  Front door latch and lock actuator (RH) terminal L—BCM terminal 6J
•  Rear door latch and lock actuator (LH) terminal B—BCM terminal 6J
•  Rear door latch and lock actuator (RH) terminal L—BCM terminal 6J
―  R.H.D.:
•  Front door latch and lock actuator (LH) terminal B—BCM terminal 6J
•  Rear door latch and lock actuator (LH) terminal B—BCM terminal 6J
•  Rear door latch and lock actuator (RH) terminal L—BCM terminal 6J
•  Front door latch and lock actuator (passenger-side) connector or terminals malfunction
•  Open circuit in wiring harness between the following:
―  L.H.D.:
•  Front door latch and lock actuator (RH) terminal D—Body ground
―  R.H.D.:
•  Front door latch and lock actuator (LH) terminal J—Body ground
•  Front door lock-link switch (passenger-side) malfunction
•  Open circuit in wiring harness between the following terminals:
―  L.H.D.:
•  Front door latch and lock actuator (RH) terminal L—BCM terminal 6J
―  R.H.D.:
•  Front door latch and lock actuator (LH) terminal B—BCM terminal 6J
•  Rear door latch and lock actuator (LH) connector or terminals malfunction
•  Open circuit in wiring harness between rear door latch and lock actuator (LH) terminal J and body ground
•  Rear door lock-link switch (LH) malfunction
•  Open circuit in wiring harness between rear door latch and lock actuator (LH) terminal B and BCM terminal 6J
•  Rear door latch and lock actuator (RH) connector or terminals malfunction
•  Open circuit in wiring harness between rear door latch and lock actuator (RH) terminal D and body ground
•  Rear door lock-link switch (RH) malfunction
•  Open circuit in wiring harness between rear door latch and lock actuator (RH) terminal L and BCM terminal 6J
•  BCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
CONFIRM BCM DTC
•  Clear the DTC using the M-MDS.
•  Perform the BCM DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Go to the next step.
No
Go to Step 18.
2
VERIFY MALFUNCTIONING LOCATION
•  Operate the front door lock-link switch (passenger-side), rear door lock-link switch (LH) and (RH) unlock.
•  Do the switches operate normally?
Yes
BCM internal malfunction can be considered the cause.
•  Go to Step 17.
No
All door lock-link switches do not operate normally.
•  Go to the next step.
Front door lock-link switch (passenger-side) does not operate normally.
•  Go to Step 5.
Rear door lock-link switch (LH) does not operate normally.
•  Go to Step 9.
Rear door lock-link switch (RH) does not operate normally.
•  Go to Step 13.
3
INSPECT BCM CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the BCM connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 17.
No
Go to the next step.
4
INSPECT FRONT DOOR LOCK-LINK SWITCH (PASSENGER-SIDE)/REAR DOOR LOCK-LINK SWITCH (LH)/(RH) CIRCUIT FOR OPEN CIRCUIT
•  Reconnect the BCM connector.
•  Reconnect the negative battery cable.
•  Operates the front door lock-link switch (passenger-side), rear door lock-link switch (LH) and (RH) locked (switch off).
•  Measure the voltage at the BCM terminal 6J (wiring harness-side).
•  Is there any voltage?
Yes
Repair or replace the wiring harness for a possible open circuit, then go to Step 17.
No
BCM internal malfunction can be considered the cause.
•  Go to Step 17.
5
INSPECT FRONT DOOR LATCH AND LOCK ACTUATOR (PASSENGER-SIDE) CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the front door latch and lock actuator (passenger-side) connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 17.
No
Go to the next step.
6
INSPECT FRONT DOOR LOCK-LINK SWITCH (PASSENGER-SIDE) GROUND CIRCUIT FOR OPEN CIRCUIT
•  Verify that the front door latch and lock actuator (passenger-side) connector is disconnected.
•  Inspect for continuity between the following terminal (wiring harness-side) and body ground:
―  L.H.D.:
•  Front door latch and lock actuator (RH) terminal D
―  R.H.D.:
•  Front door latch and lock actuator (LH) terminal J
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 17.
7
INSPECT FRONT DOOR LOCK-LINK SWITCH (PASSENGER-SIDE)
•  Inspect the front door lock-link switch (passenger-side).
•  Is there any malfunction?
Yes
Replace the front door latch and lock actuator (passenger-side), then go to Step 17.
(See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
No
Go to the next step.
8
INSPECT FRONT DOOR LOCK-LINK SWITCH (PASSENGER-SIDE) CIRCUIT FOR OPEN CIRCUIT
•  Verify that the front door latch and lock actuator (passenger-side) connector is disconnected.
•  Reconnect the negative battery cable.
•  Operates the rear door lock-link switch (LH) and (RH) locked (switch off).
•  Measure the voltage at the following terminal (wiring harness-side):
―  L.H.D.:
•  Front door latch and lock actuator (RH) terminal L
―  R.H.D.:
•  Front door latch and lock actuator (LH) terminal B
•  Is there any voltage?
Yes
BCM internal malfunction can be considered the cause.
•  Go to Step 17.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 17.
9
INSPECT REAR DOOR LATCH AND LOCK ACTUATOR (LH) CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the rear door latch and lock actuator (LH) connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 17.
No
Go to the next step.
10
INSPECT REAR DOOR LOCK-LINK SWITCH (LH) GROUND CIRCUIT FOR OPEN CIRCUIT
•  Verify that the rear door latch and lock actuator (LH) connector is disconnected.
•  Inspect for continuity between rear door latch and lock actuator (LH) terminal J (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 17.
11
INSPECT REAR DOOR LOCK-LINK SWITCH (LH)
•  Inspect the rear door lock-link switch (LH).
•  Is there any malfunction?
Yes
Replace the rear door latch and lock actuator (LH), then go to Step 17.
(See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
No
Go to the next step.
12
INSPECT REAR DOOR LOCK-LINK SWITCH (LH) CIRCUIT FOR OPEN CIRCUIT
•  Verify that the rear door latch and lock actuator (LH) connector is disconnected.
•  Reconnect the negative battery cable.
•  Operates the front door lock-link switch (passenger-side) and rear door lock-link switch (RH) locked (switch off).
•  Measure the voltage at the rear door latch and lock actuator (LH) terminal B (wiring harness-side).
•  Is there any voltage?
Yes
BCM internal malfunction can be considered the cause.
•  Go to Step 17.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 17.
13
INSPECT REAR DOOR LATCH AND LOCK ACTUATOR (RH) CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the rear door latch and lock actuator (RH) connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 17.
No
Go to the next step.
14
INSPECT REAR DOOR LOCK-LINK SWITCH (RH) GROUND CIRCUIT FOR OPEN CIRCUIT
•  Verify that the rear door latch and lock actuator (RH) connector is disconnected.
•  Inspect for continuity between rear door latch and lock actuator (RH) terminal D (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 17.
15
INSPECT REAR DOOR LOCK-LINK SWITCH (RH)
•  Inspect the rear door lock-link switch (RH).
•  Is there any malfunction?
Yes
Replace the rear door latch and lock actuator (RH), then go to Step 17.
(See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
No
Go to the next step.
16
INSPECT REAR DOOR LOCK-LINK SWITCH (RH) CIRCUIT FOR OPEN CIRCUIT
•  Verify that the rear door latch and lock actuator (RH) connector is disconnected.
•  Reconnect the negative battery cable.
•  Operates the front door lock-link switch (passenger-side) and rear door lock-link switch (LH) locked (switch off).
•  Measure the voltage at the rear door latch and lock actuator (RH) terminal L (wiring harness-side).
•  Is there any voltage?
Yes
BCM internal malfunction can be considered the cause.
•  Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
17
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear the DTC using the M-MDS.
•  Perform the BCM DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the BCM.
Go to the next step.
No
Go to the next step.
18
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [BCM].)
No
DTC troubleshooting completed.