DTC B1174:13 [BCM]

id0902f5068900

Description

Door lock-link switch unlock circuit malfunction

Detection condition

•  BCM detects an open circuit 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) unlocked.

Fail-safe

Not applicable

Possible cause

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

•  Open circuit in wiring harness between the following:

―  Front door latch and lock actuator (RH) terminal D—Body ground (L.H.D.)

―  Front door latch and lock actuator (LH) terminal J—Body ground (R.H.D.)

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

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

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

•  BCM connector or terminal malfunction

•  Open circuit 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 an open circuit 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) unlocked.
Fail-safe	Not applicable
Possible cause	• Front door latch and lock actuator (passenger's side) connector or terminal malfunction • Open circuit in wiring harness between the following: ― Front door latch and lock actuator (RH) terminal D—Body ground (L.H.D.) ― Front door latch and lock actuator (LH) terminal J—Body ground (R.H.D.) • Front door lock-link switch (passenger's side) malfunction • Rear door latch and lock actuator (LH) connector or terminal 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 • Rear door latch and lock actuator (RH) connector or terminal 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 • BCM connector or terminal malfunction • Open circuit 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. (See DTC INSPECTION [BCM].) • Is the same DTC displayed?	Yes	Go to the next step.
1		No	Go to Step 14.
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 13.
3	INSPECT FRONT DOOR LOCK-LINK SWITCH (PASSENGER'S SIDE) GROUND CIRCUIT FOR OPEN CIRCUIT • Verify that the front door latch and lock actuator (passenger's side) connector is disconnected. • Inspect for continuity between the following terminal (wiring harness-side) and body ground: ― Front door latch and lock actuator (RH) terminal D (L.H.D.) ― Front door latch and lock actuator (LH) terminal J (R.H.D.) • Is there continuity?	Yes	Go to the next step.
3		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Front door latch and lock actuator (RH) terminal D—Body ground (L.H.D.) • Front door latch and lock actuator (LH) terminal J—Body ground (R.H.D.) 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 an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 13.
4	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.
4		No	Replace the front door latch and lock actuator (passenger's side), then go to Step 13. (See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
5	INSPECT REAR DOOR LATCH AND LOCK 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.
5		No	Repair or replace the connector, then go to Step 13.
6	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.
6		No	Refer to the wiring diagram and verify whether or not there is a common connector between rear door latch and lock actuator (LH) terminal J and body ground. 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 an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 13.
7	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.
7		No	Replace the rear door latch and lock actuator (LH), then go to Step 13. (See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
8	INSPECT REAR DOOR LATCH AND LOCK 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.
8		No	Repair or replace the connector, then go to Step 13.
9	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.
9		No	Refer to the wiring diagram and verify whether or not there is a common connector between rear door latch and lock actuator (RH) terminal D and body ground. 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 an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 13.
10	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.
10		No	Replace the rear door latch and lock actuator (RH), then go to Step 13. (See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
11	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.
11		No	Repair or replace the connector, then go to Step 13.
12	INSPECT DOOR LOCK-LINK SWITCH UNLOCK CIRCUIT FOR OPEN CIRCUIT • 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 terminals (wiring harness-side): ― 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 • Is there continuity?	Yes	Go to the next step.
12		No	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 an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to the next step.
13	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. (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.
13		No	Go to the next step.
14	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].)
14		No	DTC troubleshooting completed.