Test B: Single Mirror Inoperative
- Ensure ignition is off. Remove appropriate door trim panel. Disconnect inoperative outside mirror 8-pin harness connector. Measure voltage between ground and inoperative outside mirror harness connector terminal No. 5 (Yellow wire) while operating mirror control switch to DOWN, then RIGHT position for inoperative mirror. See Fig 1
. If 10 volts or less exists in either reading, go to next step. If more than 10 volts exists in both readings, go to step 3
.
- Disconnect mirror control switch 8-pin harness connector C527. Measure resistance in Yellow wire between inoperative mirror harness connector terminal No. 5 and mirror control switch harness connector C527 terminal No. 6. See Figure
and Fig 1
. If resistance is less than 5 ohms, replace mirror control switch. If resistance is 5 ohms or greater, repair open or high resistance in Yellow wire. See WIRING DIAGRAMS
.
- Measure voltage between ground and inoperative mirror harness connector terminal No. 6 (Dark Blue wire on driver's side; Violet wire on passenger's side) at while operating mirror control switch to UP position for inoperative mirror. Measure voltage between ground and inoperative mirror harness connector terminal No. 7 (Red wire on driver's side; White wire on passenger's side) at while operating mirror control switch to LEFT position for inoperative mirror. See Fig 1
. If 10 volts or less exists in either reading, go to next step. If more than 10 volts exists in both readings, replace inoperative outside rear view mirror motor.
- Remove mirror control switch. Test switch. See MIRROR CONTROL SWITCH
under COMPONENT TESTS. If mirror control switch is okay, repair appropriate wires in suspect from step 3
. See WIRING DIAGRAMS
. If mirror control switch is not okay, replace switch.
Courtesy of FORD MOTOR CO.