LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 1999 >> Land Cruiser >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Systems >> System Tests >> Test No. 3
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test No. 3

NOTE: When signal is received from instrument panel Electronic Control Unit (ECU), the illumination light will operate.

  1. Check DOME Fuse

    Remove DOME fuse from driver's side fuse/relay box located near driver's side kick panel. See Figure.
  2. Using DVOM, ensure continuity exists across fuse. If fuse is okay, go to next step. If fuse is blown, check for short circuit in wiring harness to fuse and instrument panel ECU. See WIRING DIAGRAMS . Instrument panel ECU is located behind center of instrument panel. See Figure. Replace fuse and repair wiring as necessary.

  3. Check Illumination Light

    Check operation of appropriate illumination light. If illumination light operates properly, go to next step. If illumination light does not operate, replace illumination light.
  4. Check for defective connectors and wiring between battery, each illumination light and instrument panel ECU. See WIRING DIAGRAMS . Instrument panel ECU is located behind center of instrument panel. See Figure.
  5. If connectors and wiring are okay, go to next test listed. See appropriate TROUBLE SHOOTING SYMPTOMS table under TROUBLE SHOOTING . If connectors or wiring are defective, repair as necessary.
scientia non olet · About LEMON Manuals