Manufacturer Code Charts: 7

HVAC DTC Troubleshooting: 7

DTC indicator 7:

An Open in the Recirculation Control Motor Circuit

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

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

3. Check for DTCs.

Is DTC 7 indicated?

YES -

Go to step 4.

NO -

Intermittent failure. Check for loose wires or poor connections on the recirculation control motor circuit.

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

5. Test the recirculation control motor Recirculation Control Motor Test.

Is the recirculation control motor OK?

YES -

Go to step 6.

NO -

Replace the recirculation control motor Recirculation Control Motor Replacement.

6. Disconnect the recirculation control motor 7P connector.

7. Disconnect the HVAC control unit 24P connector.

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









Is there continuity?

YES -

Check for loose wires or poor connections at the HVAC control unit 24P connector, and at the recirculation control motor 7P connector. If the connections are good, 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.

NO -

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