Radiator Fan Circuit Troubleshooting (With A/C)

Radiator Fan Circuit Troubleshooting

With A/C

1. Check the No. 30 (30 A) fuse in the under-dash fuse/relay box.

Is the fuse OK?

YES -

Go to step 2.

NO -

Replace the fuse and recheck.�

2. Remove the radiator fan relay Testing and Inspection, and test the radiator fan relay Testing and Inspection.

Is the relay OK?

YES -

Go to step 3.

NO -

Replace the radiator fan relay and recheck.�

3. Measure the voltage between the radiator fan relay 4P socket terminal No. 2 and body ground.





Is there battery voltage?

YES -

Go to step 4.

NO -

Repair an open in the wire between the under-dash fuse/relay box and the radiator fan relay 4P socket terminal No. 2.�

4. Disconnect the radiator fan motor 2P connector.

5. Check for continuity between the radiator fan relay 4P socket terminal No. 1 and the radiator fan motor 2P connector terminal No. 2.





Is there continuity?

YES -

Go to step 6.

NO -

Repair an open in the wire between the radiator fan relay 4P socket terminal No. 1 and the radiator fan motor 2P connector terminal No. 2.�

6. Check for continuity between the radiator fan motor 2P connector terminal No. 1 and body ground.





Is there continuity?

YES -

Replace the radiator fan motor Radiator and A/C Condenser Fan, Motor, and Shroud Removal and Installation.�

NO -

Repair an open in the wire between the radiator fan motor 2P connector terminal No. 1 and body ground. If the wire is OK, check for a poor ground at G301.�