ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT AIR CONDITIONER PRESSURE SENSOR
(a) Check the wire harness.
(1) Disconnect the A9 air conditioner pressure sensor connector.
(2) Disconnect the J42 air conditioning amplifier assembly connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
A9-1 (-) - J42-3 (SG-4) | Always | Below 1 Ω |
A9-2 (PR) - J42-24 (PRE) | Always | Below 1 Ω |
A9-3 (+) - J42-6 (S5-3) | Always | Below 1 Ω |
A9-1 (-) - Body ground | Always | 10 kΩ or higher |
A9-2 (PR) - Body ground | Always | 10 kΩ or higher |
A9-3 (+) - Body ground | Always | 10 kΩ or higher |
If the resistance is not as specified, repair the wire harness.
(4) Reconnect the J42 air conditioning amplifier assembly connector.
(5) Turn the engine switch on (IG).
(6) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
A9-3 (+) - Body ground | Engine switch on (IG) | 4.75 to 5.25 V |
If the voltage is not as specified, repair the wire harness or replace air conditioning amplifier assembly.
(b) Check the air conditioner pressure sensor.
(1) Connect the connector to the air conditioner pressure sensor.
(2) Install a manifold gauge set.
(3) Warm up the engine.
(4) Turn the A/C switch on.
(5) Measure the voltage according to the value(s) in the table below. HINT: Check from the rear of the connector while it is connected to the air conditioning amplifier assembly. Standard Voltage:
If the voltage is not as specified, replace the air conditioner pressure sensor. |
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