Accord V6-3.0L (2003)
Refrigerant Pressure Sensor / Switch: Testing and Inspection
Manual HVAC
A/C Pressure Switch Circuit Troubleshooting
NOTE:
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Do not use this troubleshooting procedure if any of the following items are operative: condenser fan, radiator fan, A/C compressor, or if the heater
is inoperative. Refer to the symptom troubleshooting index. See: Heating and Air Conditioning/Testing and Inspection/Symptom Related
Diagnostic Procedures
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Before performing symptom troubleshooting, check for powertrain DTCs.
1. Check for body DTCs in test mode A of the MICS.
Are there any DTCs indicated?
YES - Do the appropriate troubleshooting for the DTC indicated.
NO - Go to step 2.
2. Disconnect the A/C pressure switch 4P connector.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No.1 terminal of the A/C pressure switch 4P connector and body ground.
Is there 5V or more?
YES - Go to step 5.
NO - Repair open in the wire between the relay module and the A/C pressure switch. If the wire is OK, replace the relay module.
5. Turn the ignition switch OFF.
6. Check for continuity between the No.1 and No.4 terminals of the A/C pressure switch.
Is there continuity?
YES - Go to step 7.
NO - Go to step 16.
7. Reconnect the A/C pressure switch 4P connector.
8. Disconnect audio-HVAC display panel 22P connector.
9. Turn the ignition switch ON (II).