Left Front Window Does Not Operate
- Turn ignition switch to RUN position. Using a test light, backprobe between ground and Brown wire terminal at express down module connector. If test light is on, go to next step. If test light is off, repair open in Brown wire between express down module and power window 30-amp circuit breaker.
- Backprobe between Gray wire and Dark Blue wire terminals at master switch connector. While observing test light, press left front window switch at master switch to up and down positions. If test light is on, go to next step. If test light is off, check for poor connections at express down module. Repair as necessary.
- Backprobe between Dark Blue wire and Brown wire terminals at express down module connector. While observing test light, press left front window switch at master switch to up and down positions. If test light is on, go to next step. If test light is off, check for poor connections at master switch. If connections are okay, replace master switch.
- Backprobe between Brown wire and Dark Blue wire terminals at left front window motor connector. While observing test light, press left front window switch at master switch to up and down positions. If test light is on, check for poor connection at left front window motor. If connection is okay, replace motor. If test light is off, repair open in Brown wire or Dark Blue wire between master switch and left front window motor.