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Recirculation Control Motor Circuit Troubleshooting

  1. Check the No. 30 (7.5 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 recirculation control motor 7P connector terminal No. 1 and body ground.
    Fig 1: Measuring Voltage Between Recirculation Control Motor 7P Connector Terminal No 1 And Body Ground
    G03690958Courtesy 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. 30 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  - Replace the recirculation control motor (see RECIRCULATION CONTROL MOTOR TEST ), or repair the recirculation control linkage or doors.
  7. Disconnect the climate control unit 30P connector.
  8. Check for continuity between body ground and the climate control unit 30P connector terminals No. 27 and No. 28 individually.
    Fig 2: Checking For Continuity Between Body Ground And The Climate Control Unit 30P Connector Terminals No. 27 And No. 28
    G03690960Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Repair any short to body ground in the wire(s) between the climate control unit 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 to body ground.
    Fig 3: Checking Terminals For Voltage To Body Ground
    G03690960Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there any voltage? 

    1. YES  - Repair any short to power in the wire(s) between the climate control unit and the recirculation control motor. This short may also damage the climate, control unit. Repair the short to power before replacing the climate control unit.
    2. NO  - Go to step 10.
  10. Turn the ignition switch OFF.
  11. Check for continuity between the following terminals of the climate control unit 30P connector and the recirculation control motor 7P connector.
    CONNECTOR TERMINAL CHART (7 OF 8)

    30P: 7P:
    No. 27 No. 5
    No. 28 No. 7
    Fig 4: Checking Continuity Between Climate Control Unit 30P Connector And Recirculation Control Motor 7P Connector
    G03690961Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Check for loose wires or poor connections at the climate control unit 30P connector and at the recirculation control motor 7P connector. If the connections are good, substitute a known-good climate control unit, and recheck. If the symptom/ indication goes away, replace the original climate control unit.
    2. NO  - Repair any open in the wire(s) between the climate control unit and the recirculation control motor.
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