Turn the ignition switch OFF. Check for continuity between the following terminals of climate control unit connector A (14P) and the recirculation control motor 5P connector. 14P: 5P: No. 5 No. 1 No. 6 No. 2 CLIMATE CONTROL UNIT CONNECTOR A (14P) Wire side of female terminals RECIRCULATION CONTROL MOTOR 5P CONNECTOR Wire side of female terminals Is there continuity? YES - Check for loose wires or poor connections at climate control unit connector A (14P) and at recirculation control motor 7P connector. If the connections are good, substitute a known-good climate control unit and recheck. If the symptom/indication goes away, replace the original climate control unit. NO - Repair any open in the wire(s) between the climate control unit and the recirculation control motor. Remove the recirculation control motor (see page 21-49). Check the recirculation control linkage and doors for smooth movement. Do the recirculation control linkage and doors move smoothly? YES - Replace the recirculation control motor. NO - Repair the recirculation control linkage or doors.

Check the malfunction indicator lamp (MIL). Does the malfunction indicator lamp come on? YES - Refer to the fuel and emissions section (see page 11-3). NO - Go to step 2. Turn the ignition switch OFF. Disconnect the ECT sensor 2P connector. Disconnect climate control unit connector B (22P). Turn the ignition switch ON (II). Measure the voltage between the No. 22 terminal of climate control unit connector B (22P) and body ground. CLIMATE CONTROL UNIT CONNECTOR B (22P) Wire side of female terminals Is there about 5 V? YES - Check for loose wires or poor connections at climate control unit connector B (22P) and at the ECT sensor 2P connector. If the connections are good, substitute a known-good climate control unit and recheck. If the symptom/indication goes away, replace the original climate control unit. NO - Repair open in the wire between the climate control unit and the ECT sensor.