General Information

Air Conditioner
B1687 Engine Coolant Temperature Sensor Circuit - CAN Signal - General Information

Component Location





General Description

On start up, the A/C Control Unit will reference the Engine Temperature Sensor (ETS) signal through the CAN line. If the Engine Temperature is low the A/C Control Unit will change to DEF Mode.

DTC Description

DTC B1687 sets if the ETS signal has not been received through the CAN signal.

DTC Detecting Condition





Diagnostic Circuit Diagram