A

HVAC DTC Troubleshooting: A

DTC indicator A:

Climate Control Unit Internal Error

NOTE: Check the 12 volt battery condition 12 Volt Battery Test, and the charging system Component Tests and General Diagnostics.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then to ON (II).

3. Do the self-diagnostic function with the climate control unit.

4. Check for DTCs.

Is DTC A indicated?

YES -

The climate control unit is faulty, replace the climate control unit Climate Control Unit Removal/Installation.

NO -

Intermittent failure, the climate control unit is OK at this time.