Brad's Car Manuals: A 3rd party mirror of CHARM + LEMON car manuals
Home >> Lexus >> 1997 >> SC 400 >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Panel >> System Testing >> Test 1: No Display

Test 1: No Display

Download the full database via torrent (~1.1 TB)  |  Download Brad's custom LEMON patches
  1. Turn ignition on. If warning lights illuminate, go to step 3). If warning lights do not illuminate, check GAUGE fuse. If fuse is okay, repair open circuit between GAUGE fuse and instrument panel. If fuse is bad, replace fuse.
  2. Turn ignition on. If fuse blows, disconnect instrument panel connectors, replace fuse and retry. If fuse blows, repair short circuit between GAUGE fuse and instrument panel. If fuse is okay, replace power source unit and retest.
  3. Disconnect instrument panel connector "A". Check resistance between connector "A" terminal No. 23 and ground. If continuity does not exist, repair open circuit between connector "A" terminal No. 23 and ground. If continuity exists, go to next step.
  4. Turn ignition on. Check voltage between connector "A" terminalNo. 2 (+) and connector "A" terminal No. 23 (-). If battery voltage exists, replace power source unit and retest. If battery voltage does not exist, repair open circuit between GAUGE fuse and connector "A" terminal No. 2.
scientia non olet · About Brad's Car Manuals