Radiator Fan Switch A Circuit Troubleshooting (Open)

Radiator Fan Switch A Circuit Troubleshooting (Open)
1. Disconnect radiator fan switch A 2P connector.
2. Turn the ignition switch ON (II).





3. Measure voltage between the No. 2 terminal of radiator fan switch A 2P connector and body ground.
Is there battery voltage?
YES - Go to step 4.
NO - Repair open in the wire between radiator fan switch A 2P connector terminal No. 2 and underhood fuse/relay box.





4. Turn the ignition switch OFF, and check for continuity between the No. 1 terminal of radiator fan switch A 2P connector and body ground.
Is there continuity?
YES - Replace radiator fan switch A.
NO - Check for an open in the wire between radiator fan switch A 2P connector terminal No. 1 and body ground. If the wire is OK, check for a poor ground at G101, G102.