Inspection Procedure
WARNING: This page is about a different car, the 2004 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
- Check microphone.
- NG: Replace microphone (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
- OK: Go to next step
- Check overhead J/B. (See
INSPECTION
)
- NG: Replace overhead J/B (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
- OK: Go to next step
- Check wire harness between overhead J/B (microphone) and navigation ECU.
PREPARATION:
Disconnect the overhead J/B and navigation ECU connectors.
CHECK:
Check continuity of the wire harness between terminals of the overhead J/B and those of the navigation ECU.
OK:
- Continuity
- NG: Replace or repair wire harness or connector.
- OK: Check and replace navigation ECU.