1. Remove the jumper wire, and measure the voltage between radiator fan switch (High) 2P connector terminal No. 2 and body ground.

Is there battery voltage?

YES | - | Check for an open in the wire between radiator fan switch (High) 2P connector terminal No. 1 and body ground. If the wire is OK, check for a poor ground at G302.■
NO | - | Repair open in the wire between radiator fan switch (High) 2P connector terminal No. 2 and the under-hood fuse/relay box.■