DTC 3

DTC indicator 3; A Problem in the Air Mix Control Linkage, Door, or Motor

1. Clear the DTC.
2. Turn the ignition switch OFF, and then ON (II).
3. Do the self-diagnostic with the HVAC control unit.
4. Check for DTCs.

Is DTC 3 indicated?

YES - Go to step 5.

NO - Intermittent failure.

5. Turn the ignition switch OFF.
6. Test the air mix control motor.

Is the air mix control motor OK?

YES - Substitute a known-good HVAC control unit, and recheck. If the symptom/indication goes away, replace the original HVAC control unit.

NO - Replace the air mix control motor, or repair the air mix control linkage or door.