B1211

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1211: Driver Door ECU Communication Stop

DTC B1211 - Driver Door ECU Communication Stop

DESCRIPTION
HINT: "Driver door ECU" refer to the power window regulator master switch assembly.
- This DTC is output when communication stops between the power window regulator master switch and body ECU.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (COMMUNICATION LINE)




(a) Disconnect the D18 master switch, B3 J/B and S28 ECU connectors.
(b) Check the resistance between the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)




(a) Check the voltage between the wire harness side connector and body ground.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (GROUND)




(a) Check the resistance between the wire harness side connector and body ground.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY