Test B: Driver's Power Window Inoperative
- Ensure driver's window is up. Turn ignition switch to LOCK position. Disconnect driver's power window control switch harness connector C74. Test driver's power window control switch. See POWER WINDOW CONTROL SWITCH
under COMPONENT TESTS. If switch is okay, go to next step. If switch is defective, replace driver's power window control switch.
- Turn ignition switch to LOCK position. Disconnect one-touch down relay harness connector C738. Measure resistance in Yellow/Green wire between terminal No. 7 at driver's power window control switch harness connector C74 and terminal No. 3 at one-touch down relay harness connector C738. See Figure
and Fig 1
. Resistance should be 5 ohms or less. Measure resistance between ground and terminal No. 3 (Yellow/Green wire) at one-touch down relay harness connector C738. Resistance should be greater than 10 k/ohms. If both resistance readings are as specified, go to next step. If either resistance reading is not as specified, repair open and/or short to ground in Yellow/Green wire.
- Measure resistance between one-touch down relay terminals No. 3 and 5. See Fig 2
. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, replace one-touch down relay.
- Disconnect driver's power window motor harness connector C782. Measure resistance in Yellow wire between driver's power window motor harness connector C782 and terminal No. 5 at one-touch down relay harness connector C738. Resistance should be 5 ohms or less. Measure resistance between ground and terminal No. 5 (Yellow wire) at one-touch down relay harness connector C738. Resistance should be greater than 10 k/ohms. If both resistance readings are as specified, go to next step. If either resistance reading is not as specified, repair open and/or short to ground in Yellow wire.
- Connect driver's power window control switch harness connector C74. Measure resistance in White wire between ground and driver's power window motor harness connector C782. If resistance is 5 ohms or less, replace driver's power window motor. See WINDOW MOTOR
under REMOVAL & INSTALLATION. If resistance is greater than 5 ohms, repair open in White wire.
Courtesy of FORD MOTOR CO.
Courtesy of FORD MOTOR CO.