Component Location
General Description

The A/C Control Unit may increase or decrease the variable compressor output using the engine RPM signal received through the CAN lines.

DTC Description

DTC B1685 sets if the engine RPM signal has not been received through the CAN lines.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

–

Check CAN signal

1.

Faulty Engine RPM

2.

CAN communication

Enable Conditions

–

Ignition ON

Threshold value

–

No signal via CAN for 1.5 seconds or Error value received

Failsafe

–

Substitued Engine RPM value as '0'

Diagnostic Circuit Diagram
Яндекс.Метрика