With A/C

HVAC DTC Troubleshooting: 5

DTC indicator 5:

A Problem in the Mode Control Linkage, Doors, or Motor

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

2. Do the Self-Diagnostic Function with the HVAC control unit How To Troubleshoot The Heating And A/C Systems.

3. Check for DTCs.

Is DTC 5 indicated?

YES -

Go to step 4.

NO -

Intermittent failure. Check for damaged wires or poor connections in the mode control motor circuit.�

4. Turn the ignition switch to LOCK (0).

5. Test the mode control motor Mode Control Motor Test.

Is the mode control motor OK?

YES -

Go to step 6.

NO -

Replace the mode control motor Mode Control Motor Replacement, or repair the mode control linkage or doors.�

6. Check for continuity between following terminals of the HVAC control unit 24P connector and the mode control motor 7P connector.









Is there continuity?

YES -

Go to step 7.

NO -

Repair an open in the wire(s) between the HVAC control unit and the mode control motor.�

7. Check for continuity between body ground and HVAC control unit 24P connector terminals No. 14 and No. 15 individually.





Is there continuity?

YES -

Repair a short to body ground in the wire(s) between the HVAC control unit and the mode control motor.�

NO -

Substitute a known-good HVAC control unit, and recheck. If the symptom/indication goes away, replace the original HVAC control unit HVAC Control Unit Removal/Installation (With A/C).�