Troubleshooting - Flow Chart: Both Fans
15-34flowchartFlow Chart : Both Fans
NOTE
Check A/C pressure first; may be low on refrigerant.
1
Radiator fan and condenser fan do not run.
2
Inspect fuse No. 15 (15A).
3
Is the fuse OK?
NO
Replace fuse.
YES
4
Turn the ignition switch OFF.
5
Disconnect the dual pressure switch.
6
Connect the BLU/RED1 terminal to body ground.
7
Do both fans run?
NO
Repair open in BLU/RED1 wire between diode and pressure switch or faulty diode.
YES
8
Connect a jumper wire between the BLU/RED1 and BLU/RED2 terminals.
9
Do both fan motors run?
YES
Replace the dual pressure switch.
NO
10
Remove the jumper wire and reconnect the 2P connector to the pressure switch.
11
Disconnect the 2P connector from the thermostat switch.
12
Connect a jumper wire between the BLU/RED2 terminal and body ground.
(To page 15-35)