Radiator and Condenser Fans High Speed Circuit Troubleshooting
Radiator and Condenser Fans High Speed Circuit TroubleshootingType S Model
1. Remove A/C diode B from the right side of the under-dashboard area.
2. Check for current flow in both directions between the No. 1 and No. 2 terminals of A/C diode B.
Is there current flow in only one direction?
YES - Go to step 3.
NO - Replace A/C diode B.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No. 2 terminal of A/C diode B 2P connector and body ground.
Is there battery voltage?
YES - Go to step 5.
NO - Repair open in the wire between the radiator fan relay and A/C diode B.
5. Turn the ignition switch OFF.
6. Reinstall A/C diode B.
7. Disconnect the A/C pressure switch 4P connector.
8. Turn the ignition switch ON (II).
9. Measure the voltage between the No. 2 terminal of the A/C pressure switch 4P connector and body ground.
Is there battery voltage?
YES - Go to step 10.
NO - Repair open in the wire between A/C diode B and the A/C pressure switch.
10. Turn the ignition switch OFF.
11. Check for continuity between the No. 1 and No. 3 terminals of the A/C pressure switch 4P connector.
Is there continuity?
YES - Replace the A/C pressure switch.
NO - Repair open in the wire between the A/C pressure switch A and B.