The A/C Control Module sets DTC B1685 if Engine RPM signal has not been received through the CAN signal.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Check CAN signal | 1. Poor contact in harness 2. CAN communication 3. Faulty Engine RPM |
Enable Conditions |
•
Ignition "ON" | |
Threshold value |
•
No receiving CAN signal for 1.5 seconds or Receiving Error value | |
Failsafe |
•
Substituted Engine RPM value as '0' |
