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HOMESERVICE MANUALSACURA19983.5RL SPECIAL EDITIONREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 16 (A/C-HEATER SYSTEM)SELF-DIAGNOSTICSCODE F: BLOWER MOTORBLOWER MOTOR DOES NOT RUN
1998 Acura 3.5RL Special Edition

Blower Motor Does Not Run

1998 Acura 3.5RL Special EditionSECTION Blower Motor Does Not Run
WARNING: This page is about a different car, the 1998 Acura 2.5TL. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check fuse No. 17 (30-amp) in underhood fuse/relay block and fuse No. 7 (7.5-amp) in underdash fuse/relay block. If fuses are blown, replace fuses. If necessary, repair short(s) to ground. If fuses are okay, connect jumper wire between blower motor connector Blue/Red wire terminal and ground.
  2. Turn ignition on. If blower motor runs, go to step 6). If blower motor does not run, disconnect jumper wire and blower motor connector. Check for voltage between blower motor connector Yellow/Black wire terminal and ground. If battery voltage exists, replace blower motor. If battery voltage does not exist, turn ignition off.
  3. Remove blower motor relay. Test blower motor relay. See RELAYS  under TESTING. If relay is okay, check for voltage between blower motor relay socket Blue/White wire terminal and ground. If battery voltage does not exist, repair open Blue/White wire between fuse No. 17 and blower motor relay.
  4. If battery voltage exists, turn ignition on. Check for voltage between blower motor relay connector Black/Yellow wire terminal and ground. If battery voltage does not exist, repair open Black/Yellow wire between fuse No. 7 and blower motor relay. If battery voltage exists, turn ignition off.
  5. Check for continuity between blower motor relay connector Black wire terminal and ground. If continuity exists, repair open Yellow/Black wire between blower motor relay and blower motor. If continuity does not exist, check for open in Black wire between blower motor relay and ground. If Black wire is okay, check for poor ground connections.
  6. Turn ignition off and disconnect jumper wire. Remove blower motor high relay. Test blower motor high relay. See RELAYS  under TESTING. If relay is okay, connect jumper wire between blower motor high relay connector Blue/Red wire terminal and ground. Turn ignition on.
  7. If blower motor does not run, repair open Blue/Red wire between blower motor and blower motor high relay. If blower motor runs, turn ignition off and disconnect jumper wire. Turn ignition on and check for voltage between blower motor high relay connector Black/Yellow wire terminal and ground.
  8. If battery voltage does not exist, repair open Black/Yellow wire between fuse No. 7 and blower motor high relay. If battery voltage exists, turn ignition off. Check for continuity between blower motor high relay connector Black wire terminal and ground.
  9. If continuity does not exist, check for open Black wire between blower motor high relay and ground. If wire is okay, check ground connection. If continuity exists, remove climate control unit and disconnect 12-pin connector. Check for continuity in Blue/Red wire between climate control unit 12-pin connector and blower motor high relay.
  10. If continuity does not exist, repair open Blue/Red wire between climate control unit and blower motor high relay. If continuity exists, disconnect climate control unit 20-pin connector. Check for continuity in Blue/Black wire between climate control unit 20-pin connector and blower motor high relay connector. If continuity does not exist, repair open Blue/Black wire between climate control unit and blower motor high relay.
  11. If continuity exists, check for loose wires or poor connections at climate control unit 12-pin and 20-pin connectors, and blower motor high relay connector. If connections are okay, substitute known-good climate control unit and recheck. If symptom goes away with known-good climate control unit, replace original climate control unit.
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