DTC indicator F or DTC B1230: A Short in the Sunlight Sensor Circuit

1. Clear the DTC.

1. Turn the ignition switch OFF, and then ON.

1. Operate the climate control system is several modes.

1. Check the DTCs.

Is DTC F or B1230 indicated?

YES | - | Go to Step 5 .
NO | - | Intermittent failure.■

1. Disconnect the sunlight sensor 2P connector.

1. Disconnect climate control unit connector A (22P).

1. Check for continuity between the No. 13 terminal of climate control unit connector A (22P) 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 8 .

1. Reconnect the sunlight sensor 2P connector.

1. Reconnect climate control unit connector A (22P).

1. 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 .■