Climate Control Power and Ground Circuit Troubleshooting
- Check the No. 10(7.5 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES -Go to step 2.
NO -Replace the fuse, and recheck. If the fuse blows again, check for a short in the No. 10(7.5 A) fuse circuit.
- Disconnect the climate control unit 36P and 5P connector.
- Turn the ignition switch to ON (II).
- Measure the voltage between climate control unit 36P connector terminal No. 17 and body ground.
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Is there battery voltage?
YES -Go to step 5.
NO -Repair an open in the wire between the No. 10 (7.5 A) fuse in the under-dash fuse/relay box and the climate control unit.
- Turn the ignition switch to LOCK (0).
- Check for continuity between body ground and climate control unit 36P connector terminal No. 14 and climate control unit 5P connector terminal No. 3 individually.Fig 2: Checking Continuity Between Body Ground And Climate Control Unit 36P Connector Terminal No. 14 And Ground
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Fig 3: Checking Continuity Between Body Ground And Climate Control Unit 35P Connector Terminal No. 3 And GroundCourtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Check for loose wires and poor connections at the climate control unit 36P connector. If connections are good, substitute a known-good climate control unit and recheck. If the symptom/indication goes away, replace the original climate control unit.
NO -Check for open in the wire between the climate control unit and body ground. If the wire is OK, check for poor ground at G502.