DTC B1174:11 [BCM]

id0902f5068800

Description

Door lock-link switch unlock circuit malfunction

Detection condition

•  BCM detects a short to ground in the door lock-link switch unlock circuit with the front door lock-link switch (passenger's side)/rear door lock-link switch (LH)/(RH) not unlocked.

Fail-safe

Not applicable

Possible cause

•  Front door latch and lock actuator (passenger's side) connector or terminal malfunction

•  Front door lock-link switch (passenger's side) malfunction

•  Rear door latch and lock actuator (LH) connector or terminal malfunction

•  Rear door lock-link switch (LH) malfunction

•  Rear door latch and lock actuator (RH) connector or terminal malfunction

•  Rear door lock-link switch (RH) malfunction

•  BCM connector or terminal malfunction

•  Short to ground in wiring harness between the following terminals:

―  L.H.D.:

•  Front door latch and lock actuator (RH) terminal L—BCM terminal 2M

•  Rear door latch and lock actuator (LH) terminal B—BCM terminal 2M

•  Rear door latch and lock actuator (RH) terminal L—BCM terminal 2M

―  R.H.D.:

•  Front door latch and lock actuator (LH) terminal B—BCM terminal 2M

•  Rear door latch and lock actuator (LH) terminal B—BCM terminal 2M

•  Rear door latch and lock actuator (RH) terminal L—BCM terminal 2M

•  BCM malfunction

Description	Door lock-link switch unlock circuit malfunction
Detection condition	• BCM detects a short to ground in the door lock-link switch unlock circuit with the front door lock-link switch (passenger's side)/rear door lock-link switch (LH)/(RH) not unlocked.
Fail-safe	Not applicable
Possible cause	• Front door latch and lock actuator (passenger's side) connector or terminal malfunction • Front door lock-link switch (passenger's side) malfunction • Rear door latch and lock actuator (LH) connector or terminal malfunction • Rear door lock-link switch (LH) malfunction • Rear door latch and lock actuator (RH) connector or terminal malfunction • Rear door lock-link switch (RH) malfunction • BCM connector or terminal malfunction • Short to ground in wiring harness between the following terminals: ― L.H.D.: • Front door latch and lock actuator (RH) terminal L—BCM terminal 2M • Rear door latch and lock actuator (LH) terminal B—BCM terminal 2M • Rear door latch and lock actuator (RH) terminal L—BCM terminal 2M ― R.H.D.: • Front door latch and lock actuator (LH) terminal B—BCM terminal 2M • Rear door latch and lock actuator (LH) terminal B—BCM terminal 2M • Rear door latch and lock actuator (RH) terminal L—BCM terminal 2M • BCM malfunction

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY BCM DTCs AGAIN • Clear the DTC for the BCM using the M-MDS. (See CLEARING DTC [BCM].) • Lock/unlock all the doors by operating the driver’s door lock knob. • Retrieve the BCM DTCs using the M-MDS with the front door lock-link switch (passenger's side), rear door lock-link switch (LH) and (RH) not unlocked. (See DTC INSPECTION [BCM].) • Is the same DTC displayed?	Yes	Go to the next step.
1		No	Go to Step 11.
2	INSPECT FRONT DOOR LATCH AND LOCK ACTUATOR (PASSENGER'S SIDE) CONNECTOR CONDITION • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Disconnect the front door latch and lock actuator (passenger's side) connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
2		No	Repair or replace the connector, then go to Step 10.
3	INSPECT FRONT DOOR LOCK-LINK SWITCH (PASSENGER'S SIDE) • Inspect the front door lock-link switch (passenger's side). (See FRONT DOOR LOCK-LINK SWITCH INSPECTION.) • Is the front door lock-link switch (passenger's side) normal?	Yes	Go to the next step.
3		No	Replace the front door latch and lock actuator (passenger's side), then go to Step 10. (See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
4	INSPECT REAR DOOR LATCH ACTUATOR (LH) CONNECTOR CONDITION • Disconnect the rear door latch and lock actuator (LH) connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
4		No	Repair or replace the connector, then go to Step 10.
5	INSPECT REAR DOOR LOCK-LINK SWITCH (LH) • Inspect the rear door lock-link switch (LH). (See REAR DOOR LOCK-LINK SWITCH INSPECTION.) • Is the rear door lock-link switch (LH) normal?	Yes	Go to the next step.
5		No	Replace the rear door latch and lock actuator (LH), then go to Step 10. (See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
6	INSPECT REAR DOOR LATCH ACTUATOR (RH) CONNECTOR CONDITION • Disconnect the rear door latch and lock actuator (RH) connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
6		No	Repair or replace the connector, then go to Step 10.
7	INSPECT REAR DOOR LOCK-LINK SWITCH (RH) • Inspect the rear door lock-link switch (RH). (See REAR DOOR LOCK-LINK SWITCH INSPECTION.) • Is the rear door lock-link switch (RH) normal?	Yes	Go to the next step.
7		No	Replace the rear door latch and lock actuator (RH), then go to Step 10. (See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
8	INSPECT BCM CONNECTOR CONDITION • Disconnect the BCM connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
8		No	Repair or replace the connector, then go to Step 10.
9	INSPECT DOOR LOCK-LINK SWITCH UNLOCK CIRCUIT FOR SHORT TO GROUND • Verify that the BCM, front door latch and lock actuator (passenger's side), rear door latch and lock actuator (LH) and (RH) connectors are disconnected. • Inspect for continuity between the following terminal (wiring harness-side) and body ground: ― Front door latch and lock actuator (RH) terminal L (L.H.D.) ― Front door latch and lock actuator (LH) terminal B (R.H.D.) • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • L.H.D.: ― Front door latch and lock actuator (RH) terminal L—BCM terminal 2M ― Rear door latch and lock actuator (LH) terminal B—BCM terminal 2M ― Rear door latch and lock actuator (RH) terminal L—BCM terminal 2M • R.H.D.: ― Front door latch and lock actuator (LH) terminal B—BCM terminal 2M ― Rear door latch and lock actuator (LH) terminal B—BCM terminal 2M ― Rear door latch and lock actuator (RH) terminal L—BCM terminal 2M If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to the next step.
9		No	Go to the next step.
10	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Clear the DTC for the BCM using the M-MDS. (See CLEARING DTC [BCM].) • Lock/unlock all the doors by operating the driver’s door lock knob. • Retrieve the BCM DTCs using the M-MDS with the front door lock-link switch (passenger's side), rear door lock-link switch (LH) and (RH) not unlocked. (See DTC INSPECTION [BCM].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.) Go to the next step.
10		No	Go to the next step.
11	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [BCM].)
11		No	DTC troubleshooting completed.