Test C: All Power Windows Inoperative (2-Door)
- Turn ignition switch to LOCK position. Check fuse F56 (25-amp) located in Central Junction Box (CJB). If fuse is okay, go to next step. If fuse is faulty, replace fuse. If fuse fails again, repair short to ground in Green/Red wire and retest system operation.
- Turn ignition switch to RUN position. Measure voltage in Green/Blue wire between fuse F56 (25-amp) connector terminal and ground. If voltage is greater than 10 volts, go to next step. If voltage is less than 10 volts, go to step 7
.
- Turn ignition switch to LOCK position. Disconnect driver's power window control switch harness connector C488. Turn ignition switch to RUN position. Measure voltage between driver's power window control switch harness connector C488 terminal No. 15 (Green/Blue wire) and ground. See Fig 1
. If voltage is greater than 10 volts, go to next step. If voltage is less than 10 volts, repair open or short to ground in Green/Blue or Black wire and retest system operation.
- Measure voltage between driver's power window control switch harness connector C488 terminals No. 15 (Green/Blue wire) and terminal No. 5 (Black wire). If voltage is greater than 10 volts, go to next step. If voltage is less than 10 volts, repair open in Green/Blue wire or Black wire and retest system operation.
- Turn ignition switch to LOCK position. Disconnect passenger's power window control switch harness connector C489. Turn ignition switch to RUN position. Measure voltage between passenger's power window control switch harness connector C489 terminal No. 2 and ground. See Figure
. If voltage is greater than 10 volts, go to next step. If voltage is less than 10 volts, repair open or short in Green/White wire and retest system operation.
- Measure voltage in Green/White wire between passenger's power window control switch harness connector C489 terminals No. 2 (Green/White wire) and terminal No. 4 (Black wire). If voltage is greater than 10 volts, verify customer concern. If voltage is less than 10 volts, repair open in Green/White wire or Black wire as necessary.
- Turn ignition switch to LOCK position. Check fuse F1 (40-amp) located in Battery Junction Box (BJB). If fuse is okay, repair open in Green/Red wire and retest system operation. If fuse is faulty, replace fuse. If fuse fails again, repair short to ground in Green/Red wire and retest system operation.
Courtesy of FORD MOTOR CO.