B1287

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

DESCRIPTION

DTC B1287 is output when communication between the back door ECU and the main body ECU stops for more than 10 seconds.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK COMMUNICATION LINE

(a) Disconnect the E6 main body ECU and S2 back door ECU connectors.

(b) Check the resistance.

Standard resistance:

(c) Reconnect the main body ECU and back door ECU connectors.

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

2. CHECK BACK DOOR ECU (POWER SOURCE)

(a) Disconnect the S2 back door ECU connector.

(b) Measure the voltage between the terminals of the S2 back door ECU connector and body ground.

Standard voltage:

(c) Reconnect the ECU connector.

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

3. CHECK BACK DOOR ECU (GROUND)

(a) Disconnect the S2 back door ECU connector.

(b) Check the resistance.

Standard resistance: