Lexus NX: Power Steering System (for Manual Tilt And Manual Telescopic Steering Column)
Lexus NX Service Manual / Steering / Power Assist Systems / Power Steering System (for Manual Tilt And Manual Telescopic Steering Column)
- Precaution
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Problem Symptoms Table
- Terminals Of Ecu
- Diagnosis System
- Dtc Check / Clear
- Freeze Frame Data
- Fail-safe Chart
- Data List / Active Test
- Diagnostic Trouble Code Chart
- On-vehicle Inspection
- Torque Sensor1 (C1511-C1514)
- Short in Motor Circuit (C1521,C1531-C1534)
- Motor Terminal Voltage (C1524,C1555)
- Motor Rotation Angle Sensor (C1528)
- Vehicle Speed Signal (C1541)
- IG Power Supply Voltage (C1551)
- PIG Power Supply Voltage (C1552,C1554)
- Error in Matching of ECUs (C1567)
- Assist Map Number Un-Writing (C1581)
- Assist Map Number Mismatch (C1582)
- Lost Communication with Brake System Control Module (U0129,U0293,U1104)
- Power Steering Warning Light Circuit
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Precaution
PRECAUTION HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM (a) This vehicle is equipped with a Supplemental Restraint System (SRS). Failure to carry out service operations in the correct sequence could cau
Parts Location
PARTS LOCATION ILLUSTRATION *1 POWER STEERING ECU ASSEMBLY *2 ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY - POWER STEERING MOTOR ASSEMBLY - MOTOR ROTATION ANGLE SENSOR - TORQUE SENSOR - ECU
System Diagram
SYSTEM DIAGRAM
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ECM Power Source Circuit
DESCRIPTION When the power switch is turned on (IG), auxiliary battery voltage is applied to the IGSW terminal of the ECM. The output signal from the MREL terminal of the ECM causes current to flow to the coil of the EFI-MAIN relay, closing the contacts of the EFI-MAIN relay and supplying power to t
Torque Sensor1 (C1511-C1514)
DESCRIPTION The torque sensor converts the steering wheel rotation torque into electric signals and sends them to the power steering ECU assembly. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition C1511 Torque Sensor1 Torque
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