Acura Tech Tip: Radiator or Condenser Fan Operates Continuously
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Acura Tech Tip: Radiator or Condenser Fan Operates Continuously

If the radiator fan and/or the condenser fan runs continuously; or, if the fan(s) runs continuously when the engine is off, the battery may be discharged.

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If the radiator fan and/or the condenser fan of the vehicles listed below runs continuously; or, if the fan(s) runs continuously when the engine is off, the battery may be discharged.

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APPLIES TO:
2000 3.2 TLs – from VIN 19UUA5…YA000001 through VIN 19UUA5…YA057139; and 2001 3.2 CLs – from VIN 19UY4A…1A000001 through VIN 19UYA4…1A015025.

PROBABLE CAUSE:
The radiator and/or condenser fan relay has failed.

CORRECTIVE ACTION:
Replace both relays. If one relay fails, you must replace both.

PARTS INFORMATION:
Relay assembly (two required): P/N 39794-S0K-A01.

DIAGNOSIS:
• If the battery is discharged, and there is no apparent reason, remove the radiator fan and condenser fan relays from the underhood fuse/relay box, and shake them one at a time. If you hear a rattle coming from either relay, go to the Repair Procedure.
• If the fan(s) runs continuously with the ignition switch off, install known-good relay(s) and verify that the fan(s) stops. If the fan(s) stops with the known-good relay(s), go to the Repair Procedure.
Note: If the coolant temperature is high (above 185° F) when the ignition is switched off, the fan(s) will automatically run for about 15 minutes.
• If the battery is discharged and the relay(s) are OK, troubleshoot other causes.

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REPAIR PROCEDURE:
1. Remove and replace the radiator fan and condenser fan relays in the underhood fuse/relay box. Refer to page 10-15 of the 1999-2001 3.2 TL service manual or page 10-13 of the 2001 3.2 CL service manual.
2. Turn off the A/C, start the engine and let it warm up. Make sure the fans cycle on and off when the engine reaches normal operating temperature.

Technical service bulletin courtesy of Acura Parts Express.

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