B1217

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1217: Rear Door ECU LH Communication Stop

DTC B1217 - Rear Door ECU LH Communication Stop

DESCRIPTION
- This DTC is detected when communication between the multiplex network door ECU rear LH (rear door LH ECU) and gateway ECU stops for more than 10 seconds.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK OPERATION
(a) Open the rear door LH and check that the door warning light (built into combination meter) illuminates.
OK:
Door warning light illuminates.
NG -- CHECK WIRE HARNESS (MULTIPLEX NETWORK DOOR ECU REAR LH (REAR DOOR LH ECU) - BATTERY AND BODY GROUND)
OK -- REPLACE MULTIPLEX NETWORK DOOR ECU REAR LH (REAR DOOR LH ECU)
2. CHECK WIRE HARNESS (MULTIPLEX NETWORK DOOR ECU REAR LH (REAR DOOR LH ECU) - BATTERY AND BODY GROUND)




(a) Disconnect the O7 ECU connector.
(b) Measure the resistance and voltage of the wire harness side connector.
Standard voltage:






Standard resistance:






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

3. CHECK RESISTANCE OF COMMUNICATION LINE




(a) Disconnect the O7, M9 and O3 ECU connectors.
(b) Measure the resistance of the wire harness side connectors.
Standard resistance:






Result:






C -- REPAIR OR REPLACE HARNESS AND CONNECTOR
B -- REPLACE MULTIPLEX NETWORK DOOR ECU REAR LH AND WIRE HARNESS CONNECTOR
A -- REPLACE MULTIPLEX NETWORK DOOR ECU REAR LH (REAR DOOR LH ECU)