1. Check for continuity between the No. 8 terminal of climate control unit connector B (16P) and the No. 1 terminal of the magnet valve 2P connector.

Is there continuity?

YES | - | Check for loose wires or poor connections at climate control unit connector B (16P) and at the magnet valve 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 magnet valve.■