Test A: Both Mirrors Inoperative
- Remove driver's door trim panel. Disconnect mirror control switch 8-pin harness connector C527. Measure voltage between ground and mirror control switch harness connector C527 terminal No. 5 (Dark Green wire). See Fig 1
. If more than 10 volts exists, go to next step. If 10 volts or less exists, repair open in Dark Green wire between Central Junction Box (CJB) and mirror control switch. See WIRING DIAGRAMS
.
- Ensure rear window defogger switch is turned off. Measure resistance between ground and mirror control switch harness connector C527 terminal No. 1 (Black wire). See Fig 1
. If resistance is less than 5 ohms, go to next step. If resistance is greater 5 ohms or greater, repair open or high resistance in Black wire. See WIRING DIAGRAMS
.
- Disconnect driver's side mirror 8-pin harness connector C520. Measure resistance of Yellow wire between driver's side mirror harness connector C520 terminal No. 5 and mirror control switch harness connector C527 terminal No. 6. See Fig 1
and Figure
. 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.
Courtesy of FORD MOTOR CO.