Driver Side Door Window Lock Signal Circuit

Driver Side Door Window Lock Signal Circuit

DESCRIPTION
The window lock switch circuit can be checked using the DTC check.

The window lock switch is built in the driver door ECU. Voltage applied to the WLSW terminal of the driver door ECU is shut off when the window lock switch is turned to the LOCK position. Thus the power main relay stops power supply to the other power window control switches.

Wiring Diagram:

Step 1-4:

INSPECTION PROCEDURE

HINT: When using the intelligent tester, start the inspection from step 1 and when not using the intelligent tester, start from step 2.

Check if DTC B1221 of the multiplex communication system is output. When the DTC is not output, proceed to the following procedures and when it is output, perform inspection.