V6 Models
- Use voltmeter to measure voltage between ground and (backprobe) terminal No. 4 (Black wire) at radiator fan control module. See Fig 1
. If voltage is less than one volt, go to next step. If voltage is more than one volt, repair open or poor connection in Black wire between radiator fan control module and ground. Ground is located at driver's kick panel, near Data Link Connector (DLC).
- Measure voltage between ground and (backprobe) terminal No. 6 (White wire) of radiator fan control module. If battery voltage exists, go to next step. If battery voltage does not exist, check for blown fuse No. 58 (20-amp) in underhood fuse block and/or repair open in White wire between radiator fan control module and terminal No. 1 of condenser fan relay and terminal No. 1 of radiator fan relay. See WIRING DIAGRAMS
.
- Measure voltage between ground and (backprobe) terminal No. 7 (Black/Yellow wire) of radiator fan control module. If battery voltage exists, go to next step. If battery voltage does not exist, check for blown fuse No. 6 (15-amp) in underdash fuse block and/or repair open in Black/Yellow wire between radiator fan control module and fuse.
- Measure voltage between ground and (backprobe) terminal No. 2 (Black/Yellow wire) of radiator fan control module. If battery voltage exists, go to next step. If battery voltage does not exist, check for blown fuse No. 3 (7.5-amp) in underdash fuse block and/or repair open in Black/Yellow wire between radiator fan control module and fuse.
- Measure voltage between ground and (backprobe) terminal No. 3 (Yellow/White wire) of radiator fan control module. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Yellow/White wire between radiator fan control module and terminal No. 3 of condenser fan relay. If wire is okay, replace radiator fan control module (located behind glove box).
- Measure voltage between ground and (backprobe) terminal No. 1 (Yellow wire) of radiator fan control module. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Yellow wire between radiator fan control module and terminal No. 3 of radiator fan relay. If wire is okay, replace radiator fan control module (located behind glove box).
- Connect a jumper wire between ground and (backprobe) terminal No. 8 (Green wire) of radiator fan control module. Radiator fan and condenser fan should come on. If fans come on, go to next step. If fans do not come on, repair open in Green wire between radiator fan control module and terminal No. 2 of radiator fan switch "A". If wire is okay, replace faulty radiator fan relay and/or condenser fan relay.
- Ensure engine coolant temperature is less than 107°F (225°C). Measure voltage between ground and (backprobe) terminal No. 5 (White/Green wire) of radiator fan control module. If voltage is about 11 volts, system is okay. If voltage is not about 11 volts, check radiator fan switch "B". If fan switch is okay, replace radiator fan control module (located behind glove box).
Courtesy of AMERICAN HONDA MOTOR CO., INC.