Lexus RX (RX 350L, RX450h) 2016-2026 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)
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Emission Gas NOx Sensor Circuit (B1461/61)
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Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Roof Headlining (w/ Rear No. 2 Seat): Reassembly
REASSEMBLY PROCEDURE 1. INSTALL NO. 1 ROOF WIRE (a) When using a new roof headlining assembly: (1) Using a knife, cut the roof headlining assembly at the markings as shown in the illustration. *A for Standard Roof *B for Sliding Roof *a Marking *b Cut (b) Apply butyl tape as s ...
Lexus RX (RX 350L, RX450h) 2016-2026 Owners Manual > Driving tips: Utility vehicle
precautions
This vehicle belongs to the utility vehicle class, which has higher
ground clearance
and narrower tread in relation to the height of its center of gravity.
Utility vehicle feature
Specific design characteristics give it a higher center of gravity than
ordinary
passenger cars. This vehic ...
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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