Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Compressor Solenoid Circuit (B1451/51)
DESCRIPTION
In this circuit, the cooler compressor assembly (compressor solenoid) receives a refrigerant compression demand signal from the air conditioning amplifier assembly.
Based on this signal, the cooler compressor assembly (compressor solenoid) changes the amount of compressor output.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory |
|---|---|---|---|---|
| B1451/51 | Compressor Solenoid Circuit | Open or short in compressor solenoid circuit |
| - |
WIRING DIAGRAM
PROCEDURE
| 1. | INSPECT COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) |
| (a) Disconnect the D17 cooler compressor assembly (compressor solenoid) connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 1 (SOL-) - 2 (SOL+) | 25°C (77°F) | 10.1 to 11.1 Ω |
| NG | .gif) | REPLACE COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) |
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|
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| 2. | CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| D17-1 (SOL-) - Body ground | Always | Below 1 Ω |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 3. | CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the J43 air conditioning amplifier assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| D17-2 (SOL+) - J43-3 (SOL+) | Always | Below 1 Ω |
| D17-2 (SOL+) or J43-3 (SOL+) - Body ground | Always | 10 kΩ or higher |
| Result | Proceed to |
|---|---|
| NG | A |
| OK (When troubleshooting according to the Problem Symptoms Table) | B |
| OK (When troubleshooting according to the DTC) | C |
| A | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
| B | | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| C | | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
Rear Air Outlet Damper Control Servo Motor Circuit (B1449/49)
DESCRIPTION The No. 2 air conditioning radiator damper servo sub-assembly sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier a ...
Emission Gas NOx Sensor Circuit (B1461/61)
DESCRIPTION The smog ventilation sensor is installed to the front of the cooler condenser assembly to automatically control the air inlet mode (fresh, recirculation/fresh, and recirculation). This sen ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2024 Owners Manual > Lexus Display
Audio system: Playing an audio CD and
MP3/WMA/AAC discs
CD player operation
Insert a disc, press the "MEDIA" button or select "DISC" on the
"Source"
screen with a disc inserted to begin listening to a CD.
CD top screen
Pressing the "MEDIA" button displays the CD top screen from any screen of the
selected source.
■ Selecting a track/file
Press ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Can Communication System: ECM Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area ECM Communication Stop Mode Either condition is met:
"ECM (Engine)" is not displayed on the CAN Bus Check screen of the Techstream.
Click here
Communication system DTCs (DTCs that start with U) that correspond to "ECM Communicati ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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