Inspection Procedure
WARNING: This page is about a different car, the 2005 Lexus GS 430 and 2005 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 " NAVIGATION ECU " of "TERMINAL OF ECU"
- NG: Replace the wire harness when all terminals are faulty. Replace the wire harness when the SYNC terminal is faulty.
- OK: Replace the multi display.