Examination
1. Install the gauge block.
2. Disconnect the connector from the pressure switch.
3. Set the engine speed to about 1500 rpm.
4. Check the operation of the switch.
Magnetic clutch control
- A) Connect an ohmmeter between the leads "4" And "1".
- b) Check that the conductivity between the terminals changes as the pressure changes, as shown in the figure.
Fan control
- A) Connect an ohmmeter between the leads "2" And "3".
- b) Check that the conductivity between the terminals changes as the pressure changes, as shown in the figure.
Replace switch if not working properly.
5. Stop the engine and remove the block of manometers.
6. Connect the connector to the pressure switch.
Removing
1. Discharge the air conditioning system.
2. Disconnect the connector from the sensor.
3. Remove the pressure switch from the liquid line.
Note: Do not damage the piping when removing the circuit breaker.
Installation
1. Install a pressure switch. Tightening torque 10.8 Nm.
2. Connect the connector.
3. Vacuum the system and prime the system. Coolant quantity 750±50 g.
4. Check the system for leaks.
5. Check the operation of the air conditioner.