B1287

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1287: Back Door ECU Communication Stop

DTC B1287 - Back Door ECU Communication Stop

DESCRIPTION
- B1287 is output when the communication between the multiplex network door ECU back (back door ECU) and multiplex network body ECU stops for more than 10 seconds.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (BODY ECU - BACK DOOR ECU)
(a) Check the wire harness between the body ECU and back door ECU.





(1) Disconnect the B4 and B8 connectors.
(2) Measure the resistance of the wire harness side connector.
Standard resistance:





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

2. INSPECT MULTIPLEX NETWORK DOOR ECU (BACK DOOR ECU)




(a) Disconnect the B8 connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:





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

3. INSPECT MULTIPLEX NETWORK DOOR ECU (BACK DOOR ECU)




(a) Disconnect the B8 connector.
(b) Measure the resistance of the wire harness side connector.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MULTIPLEX NETWORK DOOR ECU (BACK DOOR ECU)