Mirror Control Switch Circuit Test
- Turn ignition off. Disconnect mirror switch connector. Using an ohmmeter, connect negative lead to terminal No. 1 (Black/White wire) of mirror control switch harness connector. With ohmmeter positive lead, check for continuity at terminals No. 5, 7, 8 and 10. See Fig 1
. If continuity exists at each terminal, go to step 3). If continuity does not exist at one or all terminals, go to next step.
- If continuity does not exist at terminals No. 5, 7, 8 and 10, locate and repair open in Black/White wire. See Fig 1
. If continuity does not exist at only one terminal, check related circuit to each mirror assembly. See WIRING DIAGRAMS
. If circuit is okay, check for faulty mirror motor. Repair as necessary.
- Turn ignition switch to ACC position. Using a voltmeter, check for voltage between ground and terminal No. 4 (Orange/Green wire). See Fig 1
. If battery voltage exists, go to next step. If battery voltage does not exist, check AUDIO/MIRROR (10-amp) fuse in interior fuse block. If fuse is okay, locate and repair open in Orange/Green wire.
- Turn ignition off. Using an ohmmeter, check for continuity between terminal No. 1 (Black/White wire) and ground. See Fig 1
. If continuity does not exist, go to next step. If continuity exists, repair short to ground in Black/White wire between mirror control switch and each mirror assembly.
- Check for continuity between mirror switch harness connector terminal No. 9 (Black wire) and ground. If continuity does not exist, repair open in Black wire between mirror control switch and ground.
Courtesy of ISUZU MOTOR CO.