Circuit Open Troubleshooting

Troubleshooting (Open)
1. Disconnect the radiator fan switch 2P connector.
2. Turn the ignition switch ON (II).





3. Measure voltage between the No. 2 terminal of the radiator fan switch 2P connector and body ground.
Is there battery voltage?
YES - Go to step 4.
NO - Repair open in the wire between the radiator fan switch 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 the radiator fan switch 2P connector and body ground.
Is there continuity?
YES - Replace the radiator fan switch.
NO - Check for an open in the wire between the radiator fan switch 2P connector terminal No. 1 and body ground. If the wire is OK, check for a poor ground at G101.