On-Vehicle Inspection

ON-VEHICLE INSPECTION




1. INSPECT PRESSURE SWITCH NO.1
a. Magnetic clutch control:
Inspect pressure switch operation.
1. Set on the manifold gauge set.
2. Connect the positive (+) lead from the ohmmeter to terminal 2 and the negative (-) lead to terminal 1.
3. Check continuity between terminals when refrigerant pressure is changed, as shown in the illustration.
If operation is not as specified, replace the pressure switch.




b. Cooling fan control:
Inspect pressure switch operation.
1. Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (-) lead to terminal 3.
2. Check continuity between terminals when refrigerant pressure is changed, as shown in the illustration.
If operation is not as specified, replace the pressure switch.







2. INSPECT INTEGRATION CONTROL & PANEL ASSEMBLY
a. Disconnect the connector from integration control & panel assembly and inspect the connector on wire harness side, as shown in the table.
If circuit is not as specified, try replacing the integration control & panel assembly with a new one.If the circuit is not as specified, inspect the circuits connected to the other parts.













b. Connect the connector to integration control & panel assembly and inspect wire harness side connector from the back side, as shown in the table.
If circuit is not as specified, try replacing the integration control & panel assembly with a new one.If circuit is not as specified, inspect the circuits connected to other parts.







3. INSPECT AIR CONDITIONER NO.2 CONTROL ASSEMBLY
a. Disconnect the connector from the air conditioner No.2 control assembly and inspect the connector on wire harness side, as shown in the table.
If circuit is as specified, try replacing the air conditioner No.2 control assembly with a new one.If circuit is not as specified, inspect the circuits connected to the other parts.










b. Connect the connector to air conditioner No.2 control assembly and inspect wire harness side connector from the back side, as shown in the table.
If circuit is not as specified, replace the air conditioning amplifier assembly with a new one.If circuit is not as specified, inspect the circuits connected to other parts.