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General| Brand | Lexus |
|---|---|
| Model | LX |
| Category | Automobile |
| Language | English |
Care must be taken when replacing parts to avoid performance issues and driving hazards.
Service operations on SRS airbag system must follow correct sequence to prevent accidental deployment.
Procedure to remove air from the power steering system by turning the steering wheel lock to lock.
Check power steering fluid level in reservoir. Add fluid if necessary, noting HOT/COLD ranges.
Measure steering fluid pressure using SST, checking against standard values at various engine speeds.
General precautions for troubleshooting VGRS, including checking connections, noting conditions, and checking other systems.
Precautions for removal/installation of VGRS components, emphasizing engine switch off and test mode procedures.
If steering wheel is off-center after initialization, perform VGRS system calibration.
Check CAN communication system functionality using an intelligent tester.
Check for Diagnostic Trouble Codes (DTCs), clear them, and recheck to simulate malfunctions.
Procedure to initialize steering angle sensor to obtain tire angle signal, involving driving and tester confirmation.
Initialize actuator angle using SST and DLC3 terminals, involving steering wheel manipulation.
Enter VGRS test mode to read steering angle sensor signals, check and repair DTCs first.
Troubleshooting for VGRS system stopping or not operating, checking actuator temp, power source, and supply circuits.
Connect intelligent tester to DLC3, turn engine switch on (IG), navigate menus to read DTCs.
Clear DTCs by connecting and disconnecting specific terminals on DLC3 using SST check wire.
Connect intelligent tester to DLC3, turn engine switch on (IG), check freeze frame data via tester prompts.
Connect intelligent tester to DLC3, turn engine switch on (IG), navigate menus to read Data List values.
Diagnostic Trouble Codes (DTCs) for VGRS system, listing detection items, trouble areas, and page references.
DTCs U0100/56, U0122/56, U0126/56 indicate CAN communication system malfunctions with ECM, VDC, or SAS.
Disconnect connector, remove clamp, and pull out actuator assembly after matching marks.
Handle steering actuator carefully, ensuring seal/boot integrity and secure lock pin insertion.
Disconnect battery terminal, wait 90s for SRS disable, and note initialization needs after reconnection.
Check CAN communication system functionality using an intelligent tester.
Perform key ID registration after replacing lock actuator. Open/close door to memorize lock position.
Check for DTCs using intelligent tester and proceed based on output.
Troubleshooting for steering wheel unable to unlock when engine cannot start, checking actuator, main body ECU, certification ECU, entry system, power circuit, and sensor.
Connect intelligent tester to DLC3, turn engine switch on (IG), navigate menus to check DTCs.
Connect intelligent tester to DLC3, turn engine switch on (IG), navigate menus to clear DTCs.
Steering lock ECU sends unlock signal to main body ECU; engine start is permitted only when unlocked.
Inspect steering lock ECU voltage for locked/unlocked states, check harness and connector.
Check LED operation, inspect steering wheel assembly (thermistor, heater/thermostat), and check harness/connector.
Follow SRS precautions before servicing steering column to prevent airbag deployment.
Procedure to adjust steering wheel center position by driving in a straight line and marking the wheel.
Service operations affect SRS airbag system; read SRS precautions before servicing steering column.
Disconnect battery terminal, wait 90s for SRS disable, and note initialization needs after reconnection.
