ECC-321

Diagnostic Trouble Code (DTC) Information

Condition







Diagnostic trouble code (DTC) ECC-321 is stored if the ECC control module detects that the power supply from the ECC control module to the air distribution damper motor is not approximately 10 V.

Possible source

- Short-circuit to supply voltage or ground in power supply to air distribution damper motor.

Condition

- Driver fault warning. The LEDs beside the A/C and REC switches flash for approximately 20 seconds.
- Control module keeps the damper motor shut down for as long as the fault persists.