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DTC B13D3:51 [BODY CONTROL MODULE (BCM)]

id0902r7107900

Outline

System malfunction location

Unregistered remote transmitter is detected

Detection condition

•  The LF control unit detects that the remote transmitter has not been programmed, when the push button start system performs authorization of the remote transmitter.

Fail-safe

Not applicable

Possible cause

•  Remote transmitter malfunction

―  The remote transmitter is not programmed after replacing the LF control unit.

―  Unprogrammed remote transmitter was used.

•  Push button start malfunction

•  LF control unit malfunction

•  Body control module (BCM) malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	Unregistered remote transmitter is detected
Detection condition	• The LF control unit detects that the remote transmitter has not been programmed, when the push button start system performs authorization of the remote transmitter.
Fail-safe	Not applicable
Possible cause	• Remote transmitter malfunction ― The remote transmitter is not programmed after replacing the LF control unit. ― Unprogrammed remote transmitter was used. • Push button start malfunction • LF control unit malfunction • Body control module (BCM) malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

VERIFY BODY CONTROL MODULE (BCM) DTCs AGAIN

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

•  Perform the DTC inspection for the body control module (BCM).
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Go to the next step.

No

Go to repair completion verification 2.

2

VERIFY IF REMOTE TRANSMITTER BROUGHT INTO VEHICLE IS FOR THAT VEHICLE

•  Does the remote transmitter belong to another vehicle?

Yes

Have the correct transmitter for the vehicle ready inside the vehicle and perform the repair completion verification.

No

Go to the next step.

3

PERFORM DTC INSPECTION AND DETERMINE WHICH KEY HAS MALFUNCTION

•  Perform the following work for each of the programmed remote transmitters:

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

―  Perform the DTC inspection for the body control module (BCM).
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Replace the malfunctioning remote transmitter, then go to the next step.

(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [(E)].)

No

Go to repair completion verification 2.

4

INSPECT PUSH BUTTON START FOR MALFUNCTION

•  Inspect the applicable part.
(See PUSH BUTTON START INSPECTION.)

•  Is the part normal?

Yes

Go to the next step.

No

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

(See PUSH BUTTON START REMOVAL/INSTALLATION.)

5

INSPECT LF CONTROL UNIT FOR MALFUNCTION

•  Inspect the applicable part.
(See LF CONTROL UNIT 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 LF CONTROL UNIT REMOVAL/INSTALLATION [(E)].)

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).
(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	VERIFY BODY CONTROL MODULE (BCM) DTCs AGAIN • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Go to the next step.
1		No	Go to repair completion verification 2.
2	VERIFY IF REMOTE TRANSMITTER BROUGHT INTO VEHICLE IS FOR THAT VEHICLE • Does the remote transmitter belong to another vehicle?	Yes	Have the correct transmitter for the vehicle ready inside the vehicle and perform the repair completion verification.
2		No	Go to the next step.
3	PERFORM DTC INSPECTION AND DETERMINE WHICH KEY HAS MALFUNCTION • Perform the following work for each of the programmed remote transmitters: ― Clear the DTC recorded in the memory. (See CLEARING DTC.) ― Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Replace the malfunctioning remote transmitter, then go to the next step. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [(E)].)
3		No	Go to repair completion verification 2.
4	INSPECT PUSH BUTTON START FOR MALFUNCTION • Inspect the applicable part. (See PUSH BUTTON START INSPECTION.) • 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 PUSH BUTTON START REMOVAL/INSTALLATION.)
5	INSPECT LF CONTROL UNIT FOR MALFUNCTION • Inspect the applicable part. (See LF CONTROL UNIT INSPECTION [(E)].) • Is the part normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See LF CONTROL UNIT REMOVAL/INSTALLATION [(E)].)
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). (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.