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

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.

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.

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.

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.

You May Also Like

ASE Practice Tests Available Online

You can get a good idea of what to expect by adding the official ASE practice tests to your study plans.

The National Institute for Automotive Service Excellence (ASE) is reminding those preparing for ASE certification, or recertification, to consider taking the official practice tests as part of their test preparation process.

The official ASE practice tests cover the ASE automobile tests (A1 through A8), four medium/heavy truck tests (T2, T4, T6 and T8), automobile service consultant test (C1), automobile maintenance and light repair test (G1), automobile advanced engine performance specialist test (L1) and automobile parts specialist test (P2).

TransFix: What Happens When a Transmission Has a Harsh Shift?

Learn about the additives and conditioners that can rejuvenate the seals and eliminate varnish in the passages of the valve body.

AACF Celebrates 65 Years Serving the Aftermarket

AACF will be announcing more details about this commemorative fundraiser April 1st.

Tesla Model 3 TPMS Service

Resetting and programming TPMS sensors for a Tesla is a lot like any other vehicle, and the challenge is still the same: keeping the light off.

Bendix Releases Technical Materials for ADAS Support

They are designed to help technicians properly set up, inspect, and diagnose several components integrated with ADAS.

Other Posts

Dayco Adds Almost 30 Part Numbers in March

The 29 new part numbers will be available by the end of March for distributors interested in adding to their product coverage.

New Orleans RTA Selects New Flyer Electric Hybrid Buses

The New Flyer buses will be equipped with the Allison eGen Flex electric hybrid propulsion system.

Can You Jumpstart an EV?

First thing’s first: Find the LV battery, which could be anywhere in the vehicle.

Belts and Pulley Alignment

A misalignment of the plane of the belt can occur when a pulley is not parallel to the other pulleys on the belt drive system.