Back Door Closer Does Not Operate

ENGINE HOOD / DOOR: BACK DOOR CLOSER SYSTEM: Back Door Closer does not Operate

Back Door Closer does not Operate

DESCRIPTION

The back door ECU controls the back door closer. In response to the signals output from the switches in the back door lock, the back door closer drives the closer motor.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT BACK DOOR LOCK
(a) Check that the back door fully closes (fully locked) when the door is closed by hand.

NG -- IMPROPER FIT OF BACK DOOR, OR A FOREIGN OBJECT IS STUCK IN BACK DOOR
OK -- Continue to next step.

2. POWER SOURCE RESET
(a) Disconnect the POWER DOOR 30A fuse and reconnect it. 10 seconds later, check that the back door closer is operational.
OK -- NORMAL

NG -- Continue to next step.

3. INSPECT WITH MOTOR BACK DOOR LOCK ASSEMBLY




(a) Check operation of the door lock.
(1) Using a screwdriver, push the latch in order to put the back door lock in the locked condition (full-latch position).
(2) Connect the positive (+) lead to terminal 1 and the negative (-) lead to terminal 2. Then, check operation of the latch.
Standard:
The latch turns to the open-latch position
(3) Inspect motor operation when battery voltage is applied to the terminals.
Standard:








(b) Check the back door courtesy switch continuity.
(1) Check the continuity between the terminals of the courtesy switch.
Standard:





(c) Check the back door latch switch continuity.
(1) Check the continuity between the terminals of the latch switch.
Standard:





(d) Check the position switch continuity.
(1) Connect the battery positive (+) lead to connector terminal 1 and the negative (-) lead to connector terminal 2.
Standard:





OK -- REPLACE WITH MOTOR BACK DOOR LOCK ASSEMBLY

NG -- Continue to next step.

4. CHECK WIRE HARNESS (BACK DOOR LOCK - BACK BODY ECU)
(a) Disconnect the B7 back door lock and B9 back door ECU connectors.




(b) Check the continuity between the terminals of the back door lock (B7) and back door ECU (B9) connectors.
Standard (Check for open) :





OK -- REPLACE MULTIPLEX NETWORK DOOR ECU

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR