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Home >> Acura >> 2003 >> RSX Base, Automatic >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control System >> Climate Control Power and Ground Circuit Troubleshooting

Climate Control Power and Ground Circuit Troubleshooting

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

    Is the fuse OK? 

    1. YES -  Go to step 2.
    2. NO -  Replace the fuse, and recheck.
  2. Disconnect the climate control unit 30P connector.
  3. Turn the ignition switch ON (II).
  4. Measure the voltage between the No. 15 terminal of the climate control unit 30P connector and body ground.
    Fig 1: Measuring Voltage Between Terminal Of Climate Control Unit 30P Connector And Body Ground
    G03652900Courtesy 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 fuse in the under-dash fuse/relay box and the climate control unit.
  5. Turn the ignition switch OFF.
  6. Check for continuity between the No. 1 terminal of the climate control unit 30P connector and body ground.
    Fig 2: Checking Continuity Between Terminal Of Climate Control Unit 30P Connector And Body Ground
    G03652901Courtesy 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. 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 -  Check for an open in the wire between the climate control unit and body ground. If the wire is OK, check for poor ground at G402.
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