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Home >> Honda >> 2008 >> Odyssey EX-L >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control >> Climate Control Communication Circuit Troubleshooting

Climate Control Communication Circuit Troubleshooting

  1. Disconnect the front climate control unit 30P connector.
  2. Disconnect the climate control panel 5P connector.
  3. Disconnect the rear climate control unit 22P connector.
  4. Disconnect the rear control panel 5P connector.
  5. Check for continuity between the No. 23 terminal of the front climate control unit 30P connector and the No. 2 terminal of the climate control panel 5P connector.
    Fig 1: Identifying Continuity Between No. 23 Terminal Of Front Climate Control Unit 30P Connector And No. 2 Terminal Of Climate Control Panel 5P Connector
    G05526395Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Go to step 6.

    NO  - Repair an open in the wire between the front climate control unit 30P connector and the climate control panel 5P connector.

  6. Check for continuity between the No. 23 terminal of the front climate control unit 30P connector and the Nonterminal of the rear control panel 5P connector.
    Fig 2: Identifying Continuity Between No. 23 Terminal And No. 2 Terminal Of Rear Control Panel 5P Connector
    G05526396Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Go to step 7.

    NO  - Repair an open in the wire between the front climate control unit 30P connector and the rear control panel 5P connector.

  7. Check for continuity between the No. 23 terminal of the front climate control unit 30P connector and the No. 17 terminal of the rear climate control unit 22P connector.
    Fig 3: Identifying Continuity Between No. 23 Terminal Of And No. 17 Terminal Of Rear Climate Control Unit 22P Connector
    G05526397Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Go to step 8.

    NO  - Repair an open in the wire between the front climate control unit 30P connector and the rear climate control unit 22P connector.

  8. Check for continuity between the No. 23 terminal of the front climate control unit 30P connector and body ground.
    Fig 4: Identifying Continuity Between No. 23 Terminal Of Front Climate Control Unit 30P Connector And Body Ground
    G05526398Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Repair a short to body ground in the wire between the front climate control unit, climate control panel, rear climate control unit and the rear control panel.

    NO  - Substitute a known-good rear control panel, climate control panel, front climate control unit, and rear climate control unit one at a time, rechecking the system after each substitution. Replace the unit that eliminates the symptom/indication.

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