S2000 L4-2.2L (2004)
Radiator Cooling Fan Motor: Component Tests and General Diagnostics
Fan Motor Testing
Fan Motor Test
1. Disconnect the 2P connectors from the radiator fan motor (A) and condenser fan motor (B).
2. Test the motor by connecting battery power to the No. 2 terminal and ground to the No. 1 terminal.
3. If the motor fails to run or does not run smoothly, replace it.
Radiator and Condenser Fans Circuit
Radiator and Condenser Fans Common Circuit Troubleshooting
1. Check the No.57 (20 A) and No.58 (20 A) fuses in the main under-hood fuse/relay box, and the No.20 (7.5 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.
2. Remove the condenser fan relay from the main under-hood fuse/relay box.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No.3 terminal of the condenser fan relay 4P socket and body ground.
Is there battery voltage?
YES - Go to step 5.
NO - Repair open in the wire between the No.20 fuse in the under-dash fuse/relay box and the radiator fan relay, and the condenser fan relay.
5. Turn the ignition switch OFF.
6. Reinstall the condenser fan relay.
