Lexus IS250 IS220d GSE20 ALE20 - AIR CONDITIONING
PRESSURE SWITCH - ON-VEHICLE INSPECTION
| 1. INSPECT PRESSURE SENSOR |
Pressure sensor
Install the manifold gauge set .
Connect the three 1.5 V dry cell batterie's positive (+) lead to terminal 3 and the negative (-) lead to terminal 1. Then connect the voltmeter's positive (+) lead to terminal 2 and the negative (-) lead to terminal 1. Measure the voltage.
- OK:
- The voltage changes according to refrigerant pressure, as shown in the graph.
If the voltage is not as specified, replace the pressure sensor.
| 2. INSPECT LOW PRESSURE SENSOR |
Low pressure sensor
Install the manifold gauge set .
Connect the three 1.5 V dry cell batterie's positive (+) lead to terminal 3 and the negative (-) lead to terminal 1. Then connect the voltmeter's positive (+) lead to terminal 2 and the negative (-) lead to terminal 1. Measure the voltage.
- OK:
- The voltage changes according to refrigerant pressure, as shown in the graph.
If the voltage is not as specified, replace the low pressure sensor.
LEXUS IS250, IS220d / GSE20 ALE20