88719A
1.INSPECT AIR CONDITIONER PRESSURE SENSOR
Check the wire harness.
Disconnect the A22 air conditioner pressure sensor connector.
Disconnect the G47 air conditioning amplifier assembly connector.
| *a | Front view of wire harness connector
(to Air Conditioner Pressure Sensor) |
| *b | Front view of wire harness connector
(to Air Conditioning Amplifier Assembly) |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A22-1 (-) - G47-15 (SG-4) | Always | Below 1 Ω |
| A22-2 (PR) - G47-6 (PRE) | ||
| A22-3 (+) - G47-11 (S5-3) | ||
| A22-1 (-) - Body ground | 10 kΩ or higher | |
| A22-2 (PR) - Body ground | ||
| A22-3 (+) - Body ground |
If the resistance is not as specified, repair the wire harness.
Reconnect the G47 air conditioning amplifier assembly connector.
Turn the ignition switch to ON.
| *a | Front view of wire harness connector
(to Air Conditioner Pressure Sensor) |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A22-3 (+) - Body ground | Ignition switch ON | 4.75 to 5.25 V |
If the voltage is not as specified, repair the wire harness or replace air conditioning amplifier assembly.
Check the air conditioner pressure sensor.
Connect the connector to the air conditioner pressure sensor.
Install a manifold gauge set.
for HV Model:
Warm up the compressor.
for Gasoline Model:
Warm up the engine.
Turn the A/C switch on.
Measure the voltage according to the value(s) in the table below.
Check from the rear of the connector while it is connected to the air conditioning amplifier assembly.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
*Value when sensor power source voltage is 5 V |
||
| G47-6 (PRE) - G47-15 (SG-4) | Refrigerant pressure: Normal pressure (less than 3025 kPa (30.8 kgf/cm2, 439 psi) and more than 176 kPa (1.8 kgf/cm2, 26 psi)) | 0.62 to 4.73 V* |
| Refrigerant pressure: Abnormal pressure (below 176 kPa (1.8 kgf/cm2, 26 psi), or 3025 kPa (30.8 kgf/cm2, 439 psi) or higher) | Below 0.85 V, or 4.50 V or higher* | |
| *A | w/o Climate Control Seat System | *B | w/ Climate Control Seat System |
| *a | Component with harness connected
(Air Conditioning Amplifier Assembly) |
- | - |
If the voltage is not as specified, replace the air conditioner pressure sensor.