Description

Back-up light on request error signal received

Detection condition

• BCM receives the error signals from the instrument cluster for 2 s or more with the ignition switched ON (engine off or on).

Fail-safe

• Perform the control with back-up light on request signal turned off.

Possible cause

• Instrument cluster malfunction

• BCM malfunction

System wiring diagram

Not applicable

Step

Inspection

Action

1

• Clear the DTC for the BCM using the M-MDS.

  (See CLEARING DTC [BCM].)

• Switch the ignition ON (engine off or on) and wait for 2 s or more.

• Retrieve the BCM DTCs using the M-MDS.

  (See DTC INSPECTION [BCM].)

• Is the same DTC displayed?

Yes

Go to the next step.

No

Go to Step 5.

2

• Retrieve the instrument cluster DTCs using the M-MDS.

  (See DTC INSPECTION [INSTRUMENT CLUSTER].)

• Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [INSTRUMENT CLUSTER].)

No

Go to the next step.

3

• Clear the DTC for the BCM using the M-MDS.

  (See CLEARING DTC [BCM].)

• Switch the ignition ON (engine off or on) and wait for 2 s or more.

• Retrieve the BCM DTCs using the M-MDS.

  (See DTC INSPECTION [BCM].)

• Is the same DTC displayed?

Yes

Replace the instrument cluster, then go to the next step.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

No

Go to Step 5.

4

• Clear the DTC for the BCM using the M-MDS.

  (See CLEARING DTC [BCM].)

• Switch the ignition ON (engine off or on) and wait for 2 s or more.

• Retrieve the BCM DTCs using the M-MDS.

  (See DTC INSPECTION [BCM].)

• Is the same DTC displayed?

Yes

Replace the BCM, then go to the next step.

(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)

No

Go to the next step.

5

• Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [BCM].)

No

DTC troubleshooting completed.