## Fan Controls

#### Symptom Troubleshooting Index

10-15

Symptom | Diagnostic procedure | Also check for
Radiator fan does not run at all, but condenser fan runs with A/C ON | Radiator and condenser fans circuit troubleshooting A (see page 10-17). |
Both radiator fan and condenser fan do not run with A/C ON and when the engine coolant temperature is above 95°C (203°F) | Check the No. 14 (10A) fuse in the under-dash fuse/relay box.

- If the fuse is faulty, replace it.
- If the fuse is OK, repair the open in the wire between the No. 14 (10A) fuse in the under-dash fuse/relay box and the radiator and condenser fan relays.

Condenser fan runs but radiator fan does not run when the engine coolant temperature is above 95°C (203°F), but both fans run with A/C ON | Replace the radiator fan control relay. |
Both radiator fan and condenser fan do not run when the engine coolant temperature is above 95°C (203°F), but both fans run with A/C ON | Radiator and condenser fans circuit troubleshooting B (see page 10-18). |
Both radiator and condenser fans do not run when the engine coolant temperature is above 95°C (203°F), but radiator fan runs with A/C ON | Radiator and condenser fans low speed circuit troubleshooting (see page 21-13). |
Both radiator fan and condenser fan run with ignition switch ON (II), with A/C OFF and when the engine temperature is below 95°C (203°F) | Radiator and condenser fans circuit troubleshooting C (see page 10-19). |
Both radiator fan and condenser fan do not run at high speed with the A/C ON | Radiator and condenser fans high speed circuit troubleshooting (see page 21-17). |
Both radiator fan speed and condenser fan speed do not change from Low to Hi when the engine coolant temperature 100°C (212°F), but both fan's speed change with A/C ON | Radiator and condenser fans high speed circuit troubleshooting (see page 10-19). |
Condenser fan speed does not change from Low to Hi with A/C ON and the engine coolant temperature above 100°C (212°F) | Condenser fan high speed circuit troubleshooting (see page 21-17). |

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