Did you test for BCM diagnostic trouble codes?

Go to Step 2

Go to Diagnostic Trouble Code (DTC) Displaying in Body Control Systems

1. Turn the ignition switch to the RUN position.
2. Using a test lamp, backprobe the left window switch connector from terminal F to the ground.

Does the test lamp light?

Go to Step 4

Go to Step 3

1. Test for a poor connection at C200 terminal E11.
2. If OK, repair the open in CKT 341, between windows circuit breaker 15 and left window switch assembly connector terminal F.

Is the repair complete?

System OK

Using a test lamp, backprobe the left side window switch connector between terminal F and terminal A.

Does the test lamp light?

Go to Step 5

Go to Step 6

1. Test the left window switch assembly connector for a poor connection.
2. If OK, replace the switch. Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

System OK

Repair the open in CKT 750, between left window switch assembly connector terminal A and S220.

Is the repair complete?

System OK