The Air conditioner Control Module sets DTC B1203 when engine coolant temperature sensor signal is at or below 0.1V for 4sec.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Monitoring the Voltage | 1. Poor connection in wiring harness 2. Short to ground in signal circuit 3. Open in signal circuit 4. Faulty engine coolant temperature 5. Faulty A/C Control Module |
Enable Conditions |
•
IG KEY ON | |
Threshold value |
•
Engine coolant temperature sensor signal is at or below 0.1V for 4sec. | |
Failsafe |
•
Control with the value of 85℃(185℉) |
