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.

Is radio operating normally?
1. YES: CD auto changer faulty.
2. NO: Go to Next Step
Is hiss noise produced by non-functioning speaker.
1. YES: Radio assembly faulty. Recheck system after repair.
2. NO: Go to Next Step
Does continuity exist in speaker wire harness?
1. NO: Speaker wire harness faulty.
2. YES: Go to next step.
Temporarily install another speaker. Function OK?
1. YES: Speaker faulty.
2. NO: Go to next step.
Radio assembly faulty. Recheck system after repair.