DTC Troubleshooting: B1230 (F)

DTC indicator F or DTC B1230: A Short in the Sunlight Sensor Circuit Clear the DTC. Turn the ignition switch OFF, and then ON. Operate the climate control system is several modes. Check the DTCs. Is DTC F or B1230 indicated?
YES | - | Go to Step 5 .
NO | - | Intermittent failure.■
Disconnect the sunlight sensor 2P connector. Disconnect climate control unit connector A (22P). 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 .
Reconnect the sunlight sensor 2P connector. Reconnect climate control unit connector A (22P). Test the sunlight sensor. Is the sunlight sensor OK?
YES | - | Go to Step 11 .
NO | - | Replace the sunlight sensor .■
Perform the A/C communication in the Self-Diagnostic Function to obtain the IS-BUS communication verification status. Is the communication OK?
YES | - | Substitute a known-good climate control unit and printed circuit board, and recheck. If the symptom/indication goes away, replace the original climate control unit and printed circuit board.■
NO | - | Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit .■