General Information

B1685 Engine RPM fault - CAN Signal

General Information

Component Location





General Description

To help control the A/C Compressor, the A/C control unit receives the engine RPM from the ECM via CAN.

DTC Description

The Air conditioner Control Module sets DTC B1685 if Engine RPM signal has not been received through the CAN signal.

DTC Detecting Condition





Diagnostic Circuit Diagram