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Home >> Lexus >> 2003 >> LS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 368 (Ignition Switch And Key Unlock Warning Switch) >> Troubleshooting >> Problem Symptoms >> Ignition Switch
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Ignition Switch

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

This system uses the multiplex communication system, so check diagnosis system of the multiplex communication system before you proceed with troubleshooting.

IGNITION SWITCH AND KEY UNLOCK WARNING SWITCH

Symptom/Suspect Area See
Ignition Switch Is Not Set To Each Position
Ignition Switch STEP 1 - INSPECT IGNITION SWITCH CONTINUITY 
Power Source Circuit .....
Key Unlock Warning System Does Not Operate. (The Buzzer Sounds When The Ignition Key Is Acc Or On)
Ignition Switch STEP 1 - INSPECT IGNITION SWITCH CONTINUITY 
Key Unlock Warning Switch STEP 2 - INSPECT KEY UNLOCK WARNING SWITCH CONTINUITY 
Wire Harness .....
Body ECU .....
Combination Meter .....