B1222

DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: B1222: Driver Side Door Lock Switch Circuit Malfunction

DTC B1222 - Driver Side Door Lock Switch Circuit Malfunction

DESCRIPTION

This DTC is output when the driver door unlock switch (for manual operation) of the power window regulator master switch assembly is ON.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC
(a) Check that there is no abnormality in the communication system by inspecting the communication function of the multiplex communication system with the Techstream.
(1) (ECU unconnected, communication line abnormal) Without code outputs, proceed to A.
(2) (ECU unconnected, communication line abnormal) With code outputs, proceed to B.
B -- GO TO MULTIPLEX COMMUNICATION SYSTEM
A -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY