MCC Trouble Codes
DTC table for manual climate control unit
Note! Failure to do this can damage the control module. Turn ignition OFF when connecting or disconnecting connectors.
The exception is diagnostic trouble code (DTC) MCC 1-1-1 for certain control modules
Note! On the MCC/STANDARD control modules introduced at production start-up of the S70/V70/C70 series must fault-tracing for MCC 3-4-2 be carried out if the REC button orange indicator LED flashes once at ignition on (diagnostic trouble code (DTC) stored) but the control module flashes out diagnostic trouble code (DTC) 1-1-1. This applies to control modules marked "S2", "S3" or "S4". See illustration.