A/C Magnet Valve Circuit Troubleshooting

NOTE: Do not use this troubleshooting procedure if the fans are also inoperative, or if the A/C compressor is inoperative. Refer to the symptom troubleshooting index. Check the No. 30 (7.5 A) fuse in the under-dash fuse/relay box. Is the fuse OK?
YES | - | Go to Step 2 .
NO | - | Replace the fuse, and recheck.■
Disconnect the magnet valve 2P connector. Turn the ignition switch ON (II). Measure the voltage between the No. 2 terminal of the magnet valve 2P connector and body ground. Is there battery voltage?
YES | - | Go to Step 5 .
NO | - | Repair open in the wire between the No. 30 fuse in the under-dash fuse/relay box and the magnet valve.■
Turn the ignition switch OFF. Reconnect the magnet valve 2P connector. |

Connect the No. 1 terminals of the magnet valve 2P connector to body ground with a jumper wire with the magnet valve connector connected. Turn the ignition switch ON (II). Does the magnet valve operate?
YES | - | Go to Step 9 .
NO | - | Replace the magnet valve, and recheck.■
Turn the ignition switch OFF, and disconnect the jumper wire. Disconnect the magnet valve 2P connector. Disconnect climate control unit connector B (16P). |

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.■