Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: On-vehicle Inspection

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:

Tester Connection

Condition

Specified Condition

J42-24 (PRE) - J42-3 (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.

*a

Component with harness connected

(Air Conditioning Amplifier Assembly)

    Components
    COMPONENTS ILLUSTRATION *1 AIR CONDITIONER PRESSURE SENSOR - - N*m (kgf*cm, ft.*lbf): Specified torque ● Non-reusable part Compressor oil ND-OIL 12 or equivalent - - ...

    Removal
    REMOVAL PROCEDURE 1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM Click here 2. REMOVE AIR CONDITIONER PRESSURE SENSOR (a) Disconnect the connector. (b) Using a 27 mm deep socket wrench, remov ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Rear Brake: Components
    COMPONENTS ILLUSTRATION *1 NO. 2 PARKING BRAKE WIRE ASSEMBLY *2 PARKING BRAKE ACTUATOR ASSEMBLY *3 O-RING - - N*m (kgf*cm, ft.*lbf): Specified torque ● Non-reusable part Lithium soap base glycol grease - - ILLUSTRATION *1 REAR DISC BRAKE CYLINDER ...

    Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Can Communication System: Combination Meter Mirror ECU Communication Stop Mode
    DESCRIPTION Detection Item Symptom Trouble Area Combination Meter Mirror ECU Communication Stop Mode Either condition is met: "Head Up Display" is not displayed on the CAN Bus Check screen of the Techstream. Click here Communication system DTCs (DTCs that start with U) that co ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2023 Copyright www.lexusrx.net
    0.0219