Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

Check sound. (Check if radio sound can be heard from driver side door speaker.)
1. OK : Go to step 3 .
2. NG : Go to next step.
Service check mode. (Stereo component amplifier) (See PRE-CHECK )
1. CHEK: Troubleshoot for each diagnosis.
2. OK : Replace multi display (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
3. NCON: Replace stereo component amplifier (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
Check stereo component amplifier.
PREPARATION:

Disconnect the stereo component amplifier connector.

CHECK:

Check the voltage of terminal +B.

OK:

+B: 10 - 14 V

CHECK:

Check the voltage of terminal ACC when the ignition switch is in ACC or ON position.

OK:

ACC: 10 - 14 V

CHECK:

Check continuity at terminal GND.

OK:

GND: Continuity
1. NG : Replace or repair wire harness or connector (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
2. OK : Replace stereo component amplifier (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).