1. Check for continuity between the following terminals of climate control unit connector A (22P) and the A/C pressure sensor 3P connector.

   22P: | 3P:
   --- | ---
   No. 15 | No. 3
   No. 20 | No. 1

Is there continuity?

YES | - | Check for loose wires or poor connections at climate control unit connector A (22P) and at the A/C pressure sensor 3P 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 A/C pressure sensor.■