FixVault
Home › Honda › 2000 › Insight › Repair and Diagnosis › Heating, Ventilation & A/C (HVAC) › HVAC Control Systems › Climate Control › Mode Control Motor Circuit Troubleshooting

Mode Control Motor Circuit Troubleshooting

  1. Check the No. 16 (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 mode control motor 7P connector.
  3. Turn the ignition switch ON (II).
  4. Measure the voltage between the No. 1 terminal of the mode control motor 7P connector and body ground.
    Fig 1: Measuring Voltage Between No. 1 Terminal Of Mode Control Motor 7P Connector And Body Ground
    G03682778Courtesy 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 mode control motor and the No. 16 (7.5 A) fuse in the under-dash fuse/relay box.
  5. Turn the ignition switch OFF.
  6. Test the mode control motor (see MODE CONTROL MOTOR TEST ).

    Is the mode control motor OK? 

    1. YES  - Go to step 7.
    2. NO  - Go to step  12.
  7. Disconnect climate control unit connector B (22P).
  8. Check for continuity between the No. 6, 9, 10, 20, 21, and No. 22 terminals of climate control unit connector B (22P) and body ground individually.
    Fig 2: Checking Continuity Terminals Of Climate Control Unit Connector B (22P) And Body Ground
    G03682779Courtesy 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 mode 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 Terminals Of Climate Control Unit Connector B (22P) Turning Ignition Switch ON (II)
    G03682780Courtesy 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 mode 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 climate control unit connector B (22P) and the mode control motor 7P connector.
    CLIMATE CONTROL UNIT CONNECTOR B (22P) AND MODE CONTROL MOTOR 7P CONNECTOR

    22P: 7P:
    No. 6 No. 7
    No. 9 No. 6
    No. 10 No. 5
    No. 20 No. 2
    No. 21 No. 3
    No. 22 No. 4
    Fig 4: Checking Continuity Between Terminals Of Climate Control Unit Connector B (22P) And Mode Control Motor 7P Connector
    G03682781Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Check for loose wires or poor connections at climate control unit connector B (22P) and at mode 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 mode control motor.
  12. Remove the mode control motor (see MODE CONTROL MOTOR TEST ).
  13. Check the mode control linkage and doors for smooth movement.

    Do the mode control linkage and doors move smoothly? 

    1. YES  - Replace the mode control motor.
    2. NO  - Repair the mode control linkage or doors.
About FixVault