Radiator and Condenser Fans High Speed Circuit Troubleshooting
Radiator and Condenser Fans High Speed Circuit TroubleshootingNOTE: If the checks in this procedure are all OK, go to radiator and condenser fan circuit troubleshooting B.
1. Check the No. 3 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 2.
NO - Replace the fuse(s), and recheck.
2. Remove A/C diode A from the right side of the dashboard.
3. Check for current flow in both directions between the No. 1 and No. 2 terminals of A/C diode A.
Is there current flow in only one direction?
YES - Go to step 4.
NO - Replace A/C diode A.
4. Turn the ignition switch ON (II).
5. Measure the voltage between the No. 2 terminal of A/C diode A 2P socket and body ground.
Is there battery voltage?
YES - Repair open in the wire between A/C diode A and the A/C pressure switch.
NO - Repair open in the wire between A/C diode B and A/C diode A.