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Recirculation Control Motor Circuit Troubleshooting

  1. Check the No. 14 (10 A) fuse in the under-dash fuse/relay box.

    Is the fuse OK? 

    1. YES  - Go to step 2.
    2. NO  - Replace the fuse, and recheck.
  2. Disconnect the recirculation control motor 7P connector.
  3. Turn the ignition switch ON (II).
  4. Measure the voltage between the No. 1 terminal of the recirculation control motor 7P connector and body ground.
    Fig 1: Measuring Voltage Between No. 1 Terminal Of Recirculation Control Motor Connector And Body Ground
    G03675878Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    1. YES  - Go to step 5.
    2. NO  - Repair open in the wire between the No. 14 (10 A) fuse in the under-dash fuse/relay box and the recirculation control motor.
  5. Turn the ignition switch OFF.
  6. Test the recirculation control motor (see RECIRCULATION CONTROL MOTOR TEST  ).

    Is the recirculation control motor OK? 

    1. YES  - Go to step 7.
    2. NO  - Go to step  12.
  7. Disconnect the heater control panel 30P connector.
  8. Check for continuity between the No. 29 and No. 30 terminals of the heater control panel 30P connector and body ground individually.
    Fig 2: Checking Continuity Between No. 29 And No. 30 Terminals
    G03675879Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Repair any short to body ground in the wire(s) between the heater control panel and the recirculation control motor.
    2. NO  - Go to step 9.
  9. Turn the ignition switch ON (II), and check the same wires for voltage.
    Fig 3: Checking Wires For Voltage
    G03675880Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there any voltage? 

    1. YES  - Repair any short to power in the wire(s) between the heater control panel and the recirculation control motor. This short may also damage the heater control panel. Repair the short to power before replacing the heater control panel.
    2. NO  - Go to step 10.
  10. Turn the ignition switch OFF.
  11. Check for continuity between the following terminals of the heater control panel 30P connector and the recirculation control motor 7P connector.
    TERMINAL NUMBER INDEX

    30P: 7P:
    No. 29 No. 5
    No. 30 No. 7
    Fig 4: Checking Continuity Between Terminals Of Heater Control Panel Connector
    G03675881Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Check for loose wires or poor connections at the heater control panel 30P connector and at the recirculation control motor 7P connector. If the connections are good, substitute a known-good heater control panel, and recheck. If the symptom/indication goes away, replace the original heater control panel.
    2. NO  - Repair any open in the wire(s) between the heater control panel and the recirculation control motor.
  12. Remove the recirculation control motor (see RECIRCULATION CONTROL MOTOR TEST  ).
  13. Check the recirculation control linkage and doors for smooth movement.

    Do the recirculation control linkage and doors move smoothly? 

    1. YES  - Replace the recirculation control motor.
    2. NO  - Repair the recirculation control linkage or doors.
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