Radiator Fan Control Module
- Perform following checks with radiator fan control module connected and ignition on. Before performing tests, check fuses No. 4 and 8 in dash fuse box and fuses No. 15, 18, 21 and 34 in underhood fuse/relay box. Use illustration for radiator fan control module terminal identification. See Fig 1
. Correct any problem before continuing. Terminal "D" (Black wire) should have continuity to body ground. If continuity to ground does not exist, repair open between terminal "D" and ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
- Terminal "F" (White wire) should have battery voltage present. If battery voltage is not present, check fuse No. 34 or repair open in White wire.
- Terminal "G" (Black/Yellow(1) wire) should have battery voltage present. If battery voltage is not present, check fuse No. 4 or repair open in Black/Yellow(1) wire.
- Terminal "B" (Black/Yellow(2) wire) should have battery voltage present. If battery voltage is not present, check fuse No. 8 or repair Black/Yellow(2) wire. Terminal "A" (Yellow/White wire) should have battery voltage present. If battery voltage is not present, replace radiator fan control module.
- Terminal "A" (Yellow(1) wire), with ignition on, should indicate battery voltage. If battery voltage is not indicated, replace radiator fan control module. Before connecting replacement module, check for continuity between terminal "C" (Yellow/White wire) and ground. If continuity exists, repair short to ground in Yellow/White wire.
- Connect terminal "H" (Green wire) to ground. Turn ignition on. If fans do not come on, check for open in Green wire between radiator fan control module and condenser fan relay or radiator fan relay. If Blue wire is okay, check for open in Yellow/White and Yellow(1) wires between radiator fan control module and fan relays. If Yellow/White and Yellow(1) wires are okay, test condenser fan or radiator fan relay.
- Terminal "E" (White/Green wire) should have about 11 volts with coolant temperature less than 226.4°F (108°C). If about 11 volts is not indicated, coolant temperature switch is faulty, short to ground exists or radiator fan control module is faulty.