S2000 L4-2.2L (2004)
8. Check for continuity between the No. 1 terminal of the radiator fan connector and body ground.
Is there continuity?
YES - Replace the radiator fan motor.
NO - Check for an open in the BLK wire between the radiator fan connector and body ground. If the wire is OK, check for a poor ground at G201.
9. Reinstall the radiator fan relay.
10. Disconnect the radiator fen switch connector. Jump terminals 1 and 2 to see if fan runs.
Does the fan run?
YES - Replace the radiator fan switch.
NO - Go to step 11.
11. Remove the jumper, and measure the voltage between the No. 2 terminal on the radiator fan switch connector and body ground.
Is there battery voltage?
YES - Check for an open in the BLK wire between the radiator fan switch connector and body ground. If the wire is OK, check for a poor ground
at G301
NO - Repair open in the GRN wire between the radiator fan switch connector and the main underhood fuse/relay box.
Radiator Fan Switch
Test
NOTE: Bleed air from the cooling system after installing the radiator fan switch.
1. Remove the radiator fan switch from the radiator.