Test E: Memory Mirror Inoperative (With Power Folding Mirrors)
WARNING: This page is about a different car, the 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.
- Operate power mirrors. If power mirrors operate properly, go to next step. If power mirrors do not operate properly, go to TEST B: MIRRORS INOPERATIVE .
- Remove inoperative mirror door trim panel. See DOOR TRIM PANEL under REMOVAL & INSTALLATION in POWER WINDOWS - BLACKWOOD article. Disconnect inoperative mirror 2-pin harness connector. Measure voltage between ground and inoperative mirror 2-pin harness connector Violet/Light Green wire while holding power folding mirror switch to IN position. Measure voltage between ground and inoperative mirror 2-pin harness connector Violet/Yellow wire while holding power folding mirror switch to OUT position. If battery voltage exists at both circuits, replace power folding mirror and test system operation. See SIDE MIRROR ASSEMBLY . If battery voltage does not exist at one or both circuits, go to next step.
- Disconnect mirror control switch harness connector C577. Measure resistance between inoperative mirror 2-pin harness connector Violet/Light Green wire and mirror control switch harness connector C577 terminal No. 1 (Violet/Light Green wire). Measure resistance between inoperative mirror 2-pin harness connector Violet/Yellow wire and mirror control switch harness connector C577 terminal No. 6 (Violet/Yellow wire). See Fig 1. If both resistances are less than 5 ohms, go to next step. If either resistance is greater than 5 ohms, repair open in appropriate wire between mirror control switch and inoperative mirror 2-pin harness connector. See WIRING DIAGRAMS .
- Measure resistance between ground and inoperative folding mirror harness connector Violet/Yellow wire. Measure resistance between ground and power folding mirror harness connector Violet/Light Green wire. If both resistances are greater than 10 k/ohms, replace mirror control switch and test system operation. See MIRROR CONTROL SWITCH under REMOVAL & INSTALLATION. If either resistance is less than 10 k/ohms, repair short to ground in appropriate wire and test system operation. See WIRING DIAGRAMS .