DTC 8
DTC indicator 8: A Short in the Recirculation Control Motor Circuit4-door with M/T, 2-door
1. Turn the ignition switch to LOCK (0) and then to ON (II).
2. Do the self-diagnostic function with the HVAC control unit.
3. Check for DTCs.
Is DTC 8 indicated?
YES - Go to step 4.
NO - Intermittent failure.
4. Turn the ignition switch to LOCK (0).
5. Test the recirculation control motor.
Is the recirculation control motor OK?
YES - Go to step 6.
NO - Replace the recirculation control motor.
6. Disconnect the recirculation control motor 7P connector.
7. Disconnect the HVAC control unit 24P connector.
8. Check for continuity between body ground and the HVAC control unit 24P connector No. 13 and No. 20 terminals individually.
Is there continuity?
YES - Repair short to body ground in the wire(s) between the HVAC control unit and the recirculation control motor.
NO - Go to step 9.
9. Check for continuity between the HVAC control unit 24P connector No. 13 and No. 20 terminals.
Is there continuity?
YES - Repair short in the wires.
NO - Go to step 10.
10. Turn the ignition switch to ON (II), and check the same terminals for voltage to body ground.
Is there any voltage?
YES - Repair short to power in the wire(s) between the HVAC control unit and the recirculation control motor. This short may also damage the HVAC control unit. Repair short to power before replacing the HVAC control unit.
NO - Substitute a known-good HVAC control unit and recheck. If the symptom/indication goes away and the recirculation control motor runs, replace the original HVAC control unit.