Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a) When troubleshooting a vehicle with a diagnosis system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the clearance warning ECU assembly.
The clearance warning ECU assembly stores DTCs when the ECU detects a malfunction in the ECU itself or in its circuits.
To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream makes it possible to clear the DTCs, activate the various actuators, and check the freeze frame data and Data List.
CHECK DLC3
(a) Check the DLC3.
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Terminals Of Ecu
TERMINALS OF ECU CLEARANCE WARNING ECU ASSEMBLY (a) Disconnect the J38 clearance warning ECU assembly connector. (b) Measure the voltage and resistance on the wire harness side connector according to ...
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the intuitive parking assist system on. (d) Turn the Techstream on. (e) Enter the follo ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2023 Owners Manual > Do-it-yourself
maintenance: Engine compartment
Washer fluid tank
Brake fluid reservoir
Engine oil level dipstick
Engine coolant reservoir
Power control unit coolant reservoir
Fuse boxes
Radiator
Power control unit coolant
radiator
Condenser
Electric cooling fans
Engine oil filler cap
Engine oil
With the engine at ...
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Rear Power Seat Control System(for Third Row): Power Seat Motor Circuit
DESCRIPTION When a switch of the fold seat switch assembly or No. 1 fold seat switch assembly is pushed, the fold seat control ECU receives a switch operation signal and operates each motor. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
When a fold seat control ECU (RH/LH seat) is replaced, it ...
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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