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Home >> Lexus >> 2002 >> GS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 179 (LEXUS Navigation System) >> Circuit Inspection >> Black screen (Nothing displayed) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus GS 430 and 2004 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check the ECU-IG fuse. 
    1. NG: Replace the fuse. 
    2. OK: Go to Next step 
  2. Check multi display. 

    PREPARATION: 

    Disconnect the multi display connector.

    CHECK: 

    Check voltage terminals +B.

    OK: 

    +B: 10 - 14 V 

    CHECK: 

    Check voltage terminal ACC when turn ignition switch ACC or ON position.

    OK: 

    ACC: 10-14 V 

    CHECK: 

    Check continuity terminal GND1.

    OK: 

    GND1: Continuity 

    1. NG: Replace or repair wire harness or connector. 
    2. OK: GO to next step. 

    Replace the multi display.