Back Door Courtesy Switch Circuit

SEAT: REAR POWER SEAT CONTROL SYSTEM: Back Door Courtesy Switch Circuit
- Back Door Courtesy Switch Circuit

DESCRIPTION

The fold seat control ECU receives signals from the back door courtesy switch and detects the state of the back door (open/close). If the ECU does not detect that the back door is open, the seat stowing and return functions are not available.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOLD SEAT CONTROL ECU (BACK DOOR COURTESY SWITCH SIGNAL)

(a) Remove the fold seat control ECU with its connectors still connected Removal.





(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

LH Side





RH Side





Text in Illustration





(c) Reinstall the fold seat control ECU.

NG -- CHECK HARNESS AND CONNECTOR (BACK DOOR COURTESY SWITCH - BODY GROUND)

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Rear Power Seat Control System

2. CHECK HARNESS AND CONNECTOR (BACK DOOR COURTESY SWITCH - BODY GROUND)

(a) Disconnect the W11 back door lock assembly (back door courtesy switch) connector.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





(c) Reconnect the back door lock assembly (back door courtesy switch) connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH)





Text in Illustration





(a) Remove the back door lock assembly Removal.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(c) Reinstall the back door lock assembly.

NG -- REPLACE BACK DOOR LOCK ASSEMBLY Removal
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - BACK DOOR COURTESY SWITCH)

(a) Disconnect the b2 or a2 fold seat control ECU connector.

(b) Disconnect the W11 back door lock assembly (back door courtesy switch) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

LH Side





RH Side





(d) Reconnect the back door lock assembly (back door courtesy switch) connector.

(e) Reconnect the fold seat control ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE FOLD SEAT CONTROL ECU Removal