A

HVAC DTC Troubleshooting: A

DTC indicator A:

Climate Control Unit Internal Error

NOTE: Check the battery condition Battery Test and the charging system Alternator and Regulator Circuit Troubleshooting.

1. Turn the ignition switch to LOCK (0), and then back to ON (II).

2. Do the Self-Diagnostic Function with the climate control unit.

3. 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. Check for poor connections at the climate control unit and at G401; with navigation, without navigation.