Power Back Door Warning System Does Not Operate

DOOR / HATCH: POWER BACK DOOR SYSTEM: Power Back Door Warning System does not Operate
- Power Back Door Warning System does not Operate

DESCRIPTION

When the power back door warning system does not operate, one of the following may be malfunctioning: 1) wireless door lock control system or 2) power back door ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* The power back door warning function can be customized. Make sure the function is ON. Customize Parameters
* The power back door system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure How To Proceed With Troubleshooting.

PROCEDURE

1. CHECK OPERATION

(a) Check power back door system operation.

Result:





*: w/ Power back door hazard warning light

B -- CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (HAZARD ANSWER-BACK FUNCTION)

A -- REPLACE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) Removal

2. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (HAZARD ANSWER-BACK FUNCTION)

(a) Check wireless door lock operation Operation Check.

Result:





B -- GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (NO ANSWER-BACK) No Answer-Back
A -- Continue to next step.

3. REPLACE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT)

(a) Replace the power back door ECU (power back door motor unit) Removal.

NEXT -- Continue to next step.

4. CHECK POWER BACK DOOR OPERATION

(a) Check that the power back door hazard warning lights operate normally Operation Check.

OK:

The power back door hazard warning lights operate normally.

NG -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal

OK -- END (POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) WAS DEFECTIVE)