A/C System Does Not Operate
WARNING: This page is about a different car, the 1998 Acura 3.0CL and 1998 Acura 2.3CL. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect A/C pressure switch 2-pin connector and turn ignition on. Check for voltage between ground and Red/White wire terminal of A/C pressure switch 2-pin connector. If battery voltage exists, go to next step. If battery voltage does not exist, repair open Red/White wire between A/C pressure switch, A/C diode and climate control unit.
- Turn ignition off. Check for continuity between terminals of A/C pressure switch. If continuity does exist, go to next step. If continuity does not exist, check for A/C system pressure. See specifications in A/C SYSTEM PERFORMANCE under TESTING. If pressure is not to specification, repair refrigerant portion of A/C system. If pressure is to specification, replace A/C pressure switch.
- Reconnect A/C pressure switch. Remove stereo unit and disconnect climate control 20-pin connector. Turn ignition on. Check for voltage between ground and terminal No. 10 (Blue/Yellow wire) of climate control unit 20-pin connector. See Figure . If battery voltage does not exist, repair open Blue/Yellow wire between A/C pressure switch and climate control unit.
- If battery voltage does exist, check for loose wires or poor connections at climate control unit 20-pin connector. If connections are okay, substitute known-good climate control unit and recheck. If symptom does not exist after substituting known-good climate control unit, replace original climate control unit.