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Recirculation Control Motor Circuit Troubleshooting

  1. Check the No. 3 (7.5A) fuse in the driver's 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 The Voltage Between The No. 1 Terminal Of The Recirculation Control Motor 7P Connector & Body Ground
    G01465669Courtesy 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. 3 fuse in the driver's 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  - Replace the recirculation control motor.
  7. Disconnect the heater control panel 30P connector.
  8. Check for continuity between the No. 6 and No. 7 terminals of the heater control panel 30P connector and body ground individually.
    Fig 2: Checking For Continuity Between The No. 6 & No. 7 Terminals Of The Heater Control Panel 30P Connector & Body Ground
    G01465670Courtesy 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 terminals for voltage.
    Fig 3: Checking For Voltage Between The No. 6 & No. 7 Terminals Of The Heater Control Panel 30P Connector & Body Ground
    G01465671Courtesy 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 following terminals of the heater control panel 30P connector and the recirculation control motor 7P connector.
    HEATER CONTROL PANEL 30P CONNECTOR-TO-RECIRCULATION CONTROL MOTOR 7P CONNECTOR CONTINUITY CHART

    Heater Control Panel 30P Connector Terminal Recirculation Control Motor 7P Connector Terminal
    No. 6 No. 7
    No. 7 No. 5
    Fig 4: Checking For Continuity Between Terminals Of The Heater Control Panel 30P Connector & The Recirculation Control Motor 7P Connector
    G01465672Courtesy 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 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.
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