Air conditioner Control Module sets DTC B1687 if engine temperature sensor signal has not been received through the CAN signal.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Check CAN signal | 1. Faulty engine coolant temperature sensor 2. CAN communication |
Enable Conditions |
•
IG KEY ON | |
Threshold value |
•
No signal via CAN for 1.5 seconds or receiving Error value | |
Failsafe |
•
Regarded it as -2℃(28.4℉) |
