## Air Conditioning

#### Compressor Clutch Circuit Troubleshooting

21-18

1. Check the No. 4 (10 A) fuse in the under-hood fuse/relay box and the No. 14 (10 A) fuse in the under-dash fuse/relay box.

   Are the fuses OK?

YES - Go to step 2.

NO - Replace the fuse(s) and recheck.

1. Check the engine coolant temperature.

   Is the coolant temperature above normal?

YES - Troubleshoot and repair cause of high engine coolant temperature.

NO - Go to step 3.

1. Remove the compressor clutch relay from the under-hood fuse/relay box and test it. Is the relay OK?

YES - Go to step 4.

NO - Replace the compressor clutch relay.

1. Measure the voltage between the No.2 terminal of the compressor clutch relay 4P socket and body ground.

COMPRESSOR CLUTCH RELAY 4P SOCKET

Is there battery voltage?

YES - Go to step 5.

NO - Replace the under-hood fuse/relay box.

1. Connect the No. 1 and No. 2 terminals of the compressor clutch relay 4P socket with a jumper wire.

COMPRESSOR CLUTCH RELAY 4P SOCKET

Does the compressor clutch click?

YES - Go to step 6.

NO - Go to step 15.

1. Disconnect the jumper wire.

1. Turn the ignition switch ON (II).

1. Measure the voltage between the No. 3 terminal of the compressor clutch relay 4P socket and body ground.

COMPRESSOR CLUTCH RELAY 4P SOCKET

Is there battery voltage?

YES - Go to step 9.

NO - Repair open in the wire between the PGM-FI main relay and the compressor clutch relay.

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