Turn the ignition switch OFF. Check for continuity between the following terminals of heater control panel connector A (14P) and the recirculation control motor 7P connector. 14P: 7P: No. 5 No. 7 No. 6 No. 5 HEATER CONTROL PANEL CONNECTOR A (14P) Wire side of female terminals RECIRCULATION CONTROL MOTOR 7P CONNECTOR Wire side of female terminals Is there continuity? YES - Check for loose wires or poor connections at heater control panel connector A (14P) and at the recirculation control motor 7P connector. If the connections are good, substitute a known-good heater control panel and recheck. If the symptom/indication goes away, replace the original heater control panel. NO - Repair any open in the wire(s) between the heater control panel and the recirculation control motor.

Remove the recirculation control motor (see page 21-48). Check the recirculation control linkage and doors for smooth movement. Does the recirculation control linkage and doors move smoothly? YES - Replace the recirculation control motor. NO - Repair the recirculation control linkage or doors.