TSX L4-2.4L (2005)
Refrigerant Pressure Sensor / Switch: Testing and Inspection
A/C Pressure Switch and Thermal Protector Circuit Troubleshooting
1. Turn the ignition switch ON (II).
2. Press the AUTO button, then press the A/C button and check the display.
Does the display indicate A/C on?
YES - Go to step 3.
NO - Check for loose or poor connection at the climate control connector. If the connections are OK, replace the audio-HVAC display panel.
3. Disconnect the thermal protector 3P connector.
4. Turn the ignition switch ON (II).
5. Measure the voltage between the No. 1 terminal of the thermal protector 3P connector and body ground.
Is there about 5 V or more?
YES - Go to step 6.
NO - Go to step 20.
6. Turn the ignition switch OFF.
7. Check for continuity between the No. 1 and No. 3 terminals of the thermal protector.
Is there continuity?
YES - Go to step 8.
NO - Replace the thermal protector.
8. Reconnect the thermal protector 3P connector.
9. Disconnect the A/C pressure switch 2P connector.
10. Turn the ignition switch ON (II).
