DTC F
DTC indicator F: A Short in the Sunlight Sensor Circuit1. Disconnect the sunlight sensor 2P connector.
Does the vehicle have a Navigation System?
YES - Go to step 7.
NO - Go to step 2.
2. Disconnect climate control unit connector B (20P).
3. Check for continuity between the No.12 terminals of climate control unit connector B (20P) and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between the climate control unit and the sunlight sensor.
NO - Go to step 4.
4. Reconnect the sunlight sensor 2P connector.
5. Reconnect climate control unit connector B (20P).
6. Test the sunlight sensor.
Is the sunlight sensor OK?
YES - Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.
NO - Replace the sunlight sensor.
7. Disconnect climate control unit connector B (26P).
8. Check for continuity between the No.19 terminal of climate control unit connector B (26P) and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between the climate control unit and the sunlight sensor.
NO - Go to step 9.
9. Reconnect the sunlight sensor 2P connector.
10. Reconnect climate control unit connector B (26P).
11. Test the sunlight sensor.
Is the sunlight sensor OK?
YES - Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.
NO - Replace the sunlight sensor.