Test B: Driver Door Window Does Not Operate
- Check Driver Door Master Window Switch
- Turn ignition off. Remove and disconnect driver door master window switch. Turn ignition switch to RUN position. Connect a jumper wire between driver door master window switch 16-pin connector C74a terminal No. 9 (White wire) and driver door master window switch 4-pin connector C74b terminal No. 3 (Black wire). See Figure
and Fig 1
. Connect another jumper wire between driver door master window switch 16-pin connector C74a terminal No. 11 (White/Green wire) and driver door master window switch 4-pin connector C74b terminal No. 2 (Violet/Blue wire). If driver door window does not go down, go to next step. If driver door window goes down, replace driver door master window switch and retest system operation.
- Check White/Green Wire For Open Or Short To Ground
- Turn ignition off. Remove one-touch window down relay (located in driver's door). Using an ohmmeter, check resistance between driver door master window switch connector C74a terminal No. 11 (White/Green wire) and one-touch window down relay connector terminal No. 3 (White/Green wire). See Fig 1
and Fig 2
. Check resistance between ground and one-touch window down relay connector terminal No. 3 (White/Green wire). If resistance is less than 5 ohms between connectors and more than 10 k/ohms between relay connector and ground, go to next step. If resistance is 5 ohms or more between connectors and 10 k/ohms or less between relay connector and ground, repair White/Green wire and retest system operation.
- Check One-Touch Window Down Relay For Open
- Using an ohmmeter, check resistance between one-touch window down relay terminals No. 3 and 5. If resistance is approximately 1000 ohms, go to next step. If resistance is not approximately 1000 ohms, replace one-touch window down relay and retest system operation.
- Check Yellow Wire For Open Or Short To Ground
- Disconnect driver door window motor connector. Using an ohmmeter, check resistance between one-touch window down relay connector terminal No. 5 (Yellow wire) and driver door window motor connector terminal No. 1 (Yellow wire). See Fig 2
. Check resistance between ground and one-touch window down relay connector terminal No. 5 (Yellow wire). If resistance is less than 5 ohms between connectors and more than 10 k/ohms between relay connector and ground, go to next step. If resistance is 5 ohms or more between connectors and 10 k/ohms or less between relay connector and ground, repair Yellow wire and retest system operation.
- Check White Wire For Open
- Connect driver door master window switch connectors. Using an ohmmeter, check resistance between ground and driver door window motor connector terminal No. 2 (White wire). If resistance is less than 5 ohms, replace driver door window motor and retest system operation. If resistance is 5 ohms or more, repair open in White wire and retest system operation.
Courtesy of FORD MOTOR CO.
Courtesy of FORD MOTOR CO.