2010 Nissan Murano - Steering Control System (Section STC) (21 pages)
Download Steering Control System (Section STC)
Manual Description
DIAGNOSIS AND REPAIR WORK FLOW 2, wiring Diagram - ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM -14, for Steering Wheel Rotation after Battery Disconnect19, pOWER SUPPLY AND GROUND CIRCUIT 6.
FOR MEXICO : Precaution for Supplemental Restraint System (SRS) "AIR BAG" "SEAT BELT, fOR MEXICO : Precaution Necessary for Steering Wheel Rotation after Battery Disconnect20, dIAGNOSIS AND REPAIR WORK FLOW, it is also important to clarify customer complaints before inspection.
Check symptoms by driving vehicle with customer, means that,” or maybe the customer mentions symptom”, power steering fluid leakage and check the power steering fluid level, check the power steering gear for damages, cracks and fluid leakage.
Check the input/output standard values for the power steering control unit, are the power steering control unit input/output values within standard ranges respectively, the EPS system controls the power steering solenoid valve through the power steering control unit, the valve driving voltage to control power steering solenoid.
Valve varies according vehicle speed, during Parking (When Turning The Steering Wheel To The Right, power steering solenoid valve is closed while vehicle stopped, pinion and 3R” are closed depending on steering torque steering wheel.
Oil pressure P” in the gear housing assembly is the sum of oil pressures occurred in 2R” 3R”, results in a light steering force because high pressure, power steering solenoid valve is opened during high-speed operation, oil pressure does not occur because the power steering solenoid valve full throttle.
Oil pressure P” in the gear housing assembly includes only oil pressure occurred in 3R” results, signals from various sensors control the driving voltage to the power steering solenoid valve, the power steering control unit controls the driving voltage to the power steering solenoid valve, for maintaining the power steering assist force when the fail-safe function is activated.
POWER SUPPLY AND GROUND CIRCUIT, disconnect power steering control unit harness connector, check voltage between power steering control unit harness connector ground, - Harness for short or open between ignition switch and power steering control unit harness connector No.
Check continuity between power steering control unit harness connector ground, >> Repair open circuit or short to power harness connectors, check power steering control unit pin terminals for damage or loose connection with harness connector, >> Repair replace damaged parts.
Power steering solenoid valve controls the power steering oil pressure in gear housing assembly, vehicle speed: km/h (62 MPH), vehicle speed: km/h (0 MPH), check power steering solenoid valve pin terminals for damage or loose connection with harness connector.
Disconnect power steering solenoid valve harness connector, check resistance between power steering solenoid valve connector terminals, check power steering solenoid valve by listening for its operation sound while applying battery voltage, power steering solenoid valve connector E52 terminals 1 (positive) 2 (negative).
ECM sends engine speed signal to power steering control unit, check continuity between ECM harness connector and power steering control unit harness connector, check signal between ECM harness connector ground with oscilloscope, connect power steering control unit harness connector.
Check signal between power steering control unit harness connector ground with oscilloscope, >> Replace power steering control unit, check ECM pin terminals for damage or loose connection with harness connector, combination meter sends vehicle speed signal to power steering control unit.
Check continuity between combination meter harness connector and power steering control unit harness, >> Replace combination meter Refer MWI-103, "Exploded View", vehicle speed: km/h (25 MPH).
Manual Description
DIAGNOSIS AND REPAIR WORK FLOW 2, wiring Diagram - ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM -14, for Steering Wheel Rotation after Battery Disconnect19, pOWER SUPPLY AND GROUND CIRCUIT 6.
FOR MEXICO : Precaution for Supplemental Restraint System (SRS) "AIR BAG" "SEAT BELT, fOR MEXICO : Precaution Necessary for Steering Wheel Rotation after Battery Disconnect20, dIAGNOSIS AND REPAIR WORK FLOW, it is also important to clarify customer complaints before inspection.
Check symptoms by driving vehicle with customer, means that,” or maybe the customer mentions symptom”, power steering fluid leakage and check the power steering fluid level, check the power steering gear for damages, cracks and fluid leakage.
Check the input/output standard values for the power steering control unit, are the power steering control unit input/output values within standard ranges respectively, the EPS system controls the power steering solenoid valve through the power steering control unit, the valve driving voltage to control power steering solenoid.
Valve varies according vehicle speed, during Parking (When Turning The Steering Wheel To The Right, power steering solenoid valve is closed while vehicle stopped, pinion and 3R” are closed depending on steering torque steering wheel.
Oil pressure P” in the gear housing assembly is the sum of oil pressures occurred in 2R” 3R”, results in a light steering force because high pressure, power steering solenoid valve is opened during high-speed operation, oil pressure does not occur because the power steering solenoid valve full throttle.
Oil pressure P” in the gear housing assembly includes only oil pressure occurred in 3R” results, signals from various sensors control the driving voltage to the power steering solenoid valve, the power steering control unit controls the driving voltage to the power steering solenoid valve, for maintaining the power steering assist force when the fail-safe function is activated.
POWER SUPPLY AND GROUND CIRCUIT, disconnect power steering control unit harness connector, check voltage between power steering control unit harness connector ground, - Harness for short or open between ignition switch and power steering control unit harness connector No.
Check continuity between power steering control unit harness connector ground, >> Repair open circuit or short to power harness connectors, check power steering control unit pin terminals for damage or loose connection with harness connector, >> Repair replace damaged parts.
Power steering solenoid valve controls the power steering oil pressure in gear housing assembly, vehicle speed: km/h (62 MPH), vehicle speed: km/h (0 MPH), check power steering solenoid valve pin terminals for damage or loose connection with harness connector.
Disconnect power steering solenoid valve harness connector, check resistance between power steering solenoid valve connector terminals, check power steering solenoid valve by listening for its operation sound while applying battery voltage, power steering solenoid valve connector E52 terminals 1 (positive) 2 (negative).
ECM sends engine speed signal to power steering control unit, check continuity between ECM harness connector and power steering control unit harness connector, check signal between ECM harness connector ground with oscilloscope, connect power steering control unit harness connector.
Check signal between power steering control unit harness connector ground with oscilloscope, >> Replace power steering control unit, check ECM pin terminals for damage or loose connection with harness connector, combination meter sends vehicle speed signal to power steering control unit.
Check continuity between combination meter harness connector and power steering control unit harness, >> Replace combination meter Refer MWI-103, "Exploded View", vehicle speed: km/h (25 MPH).
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