Odyssey EX V6-3.5L (1999)
Air Conditioning Switch: Testing and Inspection
A/C Pressure Switch Circuit Troubleshooting (Heating and A/C)
A/C Pressure Switch Circuit Troubleshooting
1. Disconnect the A/C pressure switch 4P connector.
2. Turn the ignition switch ON (II).
3. Measure the voltage between the No.1 terminal of the A/C pressure switch 4P connector and body ground.
Is there battery voltage?
YES - Go to step 4.
NO - Repair open in the wire between A/C diode A, the PCM and the A/C pressure switch.
4. Turn the ignition switch OFF.
5. Check for continuity between the No.1 and No.4 terminals of the A/C pressure switch.
Is there continuity?
YES - Go to step 6.
NO - Go to step 15.
6. Reconnect the A/C pressure switch 4P connector.
7. Disconnect the heater control panel 22P connector.
8. Turn the ignition switch ON (II).
9. Measure the voltage between the No.5 terminal of the heater control panel 22P connector and body ground.
