Toyota Corolla Cross: On-vehicle Inspection

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning Pressure Sensor / On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT AIR CONDITIONER PRESSURE SENSOR

(a) Check the wire harness.

(1) Disconnect the A61 air conditioner pressure sensor connector.

(2) Disconnect the I48 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
A61-1 (-) - I48-15 (SG-4)	Always	Below 1 Ω
A61-2 (PR) - I48-6 (PRE)	Always	Below 1 Ω
A61-3 (+) - I48-11 (S5-3)	Always	Below 1 Ω
A61-1 (-) or I48-15 (SG-4) - Other terminals and body ground	Always	10 kΩ or higher
A61-2 (PR) or I48-6 (PRE) - Other terminals and body ground	Always	10 kΩ or higher
A61-3 (+) or I48-11 (S5-3) - Other terminals and body ground	Always	10 kΩ or higher

If the resistance is not as specified, repair or replace the wire harness.

Front view of wire harness connector

(Air Conditioner Pressure Sensor)

Front view of wire harness connector

(Air Conditioning Amplifier Assembly)

(4) Connect the I48 air conditioning amplifier assembly connector.

(5) Turn the ignition switch ON.

(6) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
A61-3 (+) - Body ground	Ignition switch ON	4.75 to 5.25 V

If the voltage is not as specified, repair or replace the wire harness or replace air conditioning amplifier assembly.

*a	Front view of wire harness connector (Air Conditioner Pressure Sensor)

(b) Check the air conditioner pressure sensor.

(1) Connect the A61 air conditioner pressure sensor connector.

(2) Install a manifold gauge set.

(3) Turn the A/C switch on.

(4) Measure the voltage according to the value(s) in the table below.

Component with harness connected

(Air Conditioning Amplifier Assembly)

HINT:

Check from the rear of the connector while it is connected to the air conditioning amplifier assembly.

Standard Voltage:

Tester Connection	Condition	Specified Condition
I48-6 (PRE) - I48-15 (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))	0.74 to 4.61 V

If the voltage is not as specified, replace the air conditioner pressure sensor.

SEE MORE:

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Problem Symptoms Table

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Toyota Corolla Cross: On-vehicle Inspection

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Installation

Air Conditioning System (for Gasoline Model With Automatic Air Conditioning System)

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Problem Symptoms Table