Navigation Display: Testing and Inspection
Manual Switch (Navigation System Display) Troubleshooting1. Disconnect navigation system display unit connector A (5P).
2. Disconnect climate control unit connector A (16P).
3. Check for continuity between the following terminals of climate control unit connector A (16P) and navigation system display unit connector A (5P).
16P 5P
No.14 No.3
No.15 No.2
No.16 No.4
Is there continuity?
YES - Go to step 4.
NO - Repair any open in the wire(s) between the climate control unit and the navigation display unit.
4. Check for continuity between the No.14,15 and 16 terminals of climate control unit connector A (16P) and the body ground individually.
Is there continuity?
YES - Repair any short to body ground in the wire(s) between the climate control unit and the navigation system display unit.
NO - Check for loose wires or poor connections at climate control unit connector A (16P) and at navigation system display unit connector A (5P). If the connections are good, substitute a known-good climate control unit, and recheck. If the problem still exists, replace the navigation system display unit.