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.
- Check the navigation ECU.
CHECK:
Check terminals +B.
OK:
+B: 10-14 V
CHECK:
Check terminal ACC when turn ignition switch ACC or ON position.
OK:
ACC: 10-14 V
CHECK:
Check terminal SYNC, VR or VG.
OK:
SYNC, VR, VG: See TERMINALS OF ECU
- NG: Replace the wire harness when all terminals are faulty. Replace the wire harness when the SYNC terminal is faulty.
- OK: GO to next step.
Replace the multi display.