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DTC B12E2:11 [BODY CONTROL MODULE (BCM)]

id0902r7089700

Outline

System malfunction location

Rear door lock-link switch (LH)/(RH) unlock circuit malfunction

Detection condition

•  The body control module (BCM) detects a short to ground in the rear door lock-link switch (LH)/(RH) unlock circuit for a continuous 2 times.

Preconditions

•  The rear door lock-link switch not unlocked.

Fail-safe

Not applicable

Possible cause

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

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

•  Rear door lock-link switch (LH) malfunction

•  Rear door lock-link switch (RH) malfunction

•  Body control module (BCM) connector or terminal malfunction

•  Short to ground in rear door lock-link switch (LH)/(RH) unlock circuit

•  Body control module (BCM) malfunction

System malfunction location	Rear door lock-link switch (LH)/(RH) unlock circuit malfunction
Detection condition	• The body control module (BCM) detects a short to ground in the rear door lock-link switch (LH)/(RH) unlock circuit for a continuous 2 times. Preconditions • The rear door lock-link switch not unlocked.
Fail-safe	Not applicable
Possible cause	• Rear door latch and lock actuator (LH) connector or terminal malfunction • Rear door latch and lock actuator (RH) connector or terminal malfunction • Rear door lock-link switch (LH) malfunction • Rear door lock-link switch (RH) malfunction • Body control module (BCM) connector or terminal malfunction • Short to ground in rear door lock-link switch (LH)/(RH) unlock circuit • Body control module (BCM) malfunction

Diagnostic Procedure

Step

Inspection

Results

Action

1

INSPECT REAR DOOR LATCH AND LOCK ACTUATOR (LH) CONNECTOR FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

2

INSPECT REAR DOOR LATCH AND LOCK ACTUATOR (RH) CONNECTOR FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

3

INSPECT REAR DOOR LOCK-LINK SWITCH (LH) FOR MALFUNCTION

•  Inspect the applicable part.
(See REAR DOOR LATCH AND LOCK ACTUATOR INSPECTION [(E)].)

•  Is the part normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)

4

INSPECT REAR DOOR LOCK-LINK SWITCH (RH) FOR MALFUNCTION

•  Inspect the applicable part.
(See REAR DOOR LATCH AND LOCK ACTUATOR INSPECTION [(E)].)

•  Is the part normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)

5

INSPECT BODY CONTROL MODULE (BCM) CONNECTOR FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

6

INSPECT REAR DOOR LOCK-LINK SWITCH (LH)/(RH) UNLOCK CIRCUIT FOR SHORT TO GROUND

•  Inspect the applicable circuit for a short to ground.
(See CIRCUIT INSPECTION.)

•  Is the circuit normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the body control module (BCM) with the rear door lock-link switch not unlocked.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction recurs, replace the body control module (BCM), then go to the next step.
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)

No

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTC IS DISPLAYED

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	INSPECT REAR DOOR LATCH AND LOCK ACTUATOR (LH) CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
1		No	Repair or replace the malfunctioning location and perform the repair completion verification.
2	INSPECT REAR DOOR LATCH AND LOCK ACTUATOR (RH) CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT REAR DOOR LOCK-LINK SWITCH (LH) FOR MALFUNCTION • Inspect the applicable part. (See REAR DOOR LATCH AND LOCK ACTUATOR INSPECTION [(E)].) • Is the part normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
4	INSPECT REAR DOOR LOCK-LINK SWITCH (RH) FOR MALFUNCTION • Inspect the applicable part. (See REAR DOOR LATCH AND LOCK ACTUATOR INSPECTION [(E)].) • Is the part normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
5	INSPECT BODY CONTROL MODULE (BCM) CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT REAR DOOR LOCK-LINK SWITCH (LH)/(RH) UNLOCK CIRCUIT FOR SHORT TO GROUND • Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location and perform the repair completion verification.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the body control module (BCM) with the rear door lock-link switch not unlocked. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction recurs, replace the body control module (BCM), then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.