Steering Control System (Except Crosscabriolet): Other Nissan Murano Z51 рестайлинг 2

DETAILED FLOW

1. COLLECT THE INFORMATION FROM THE CUSTOMER It is also important to clarify customer complaints before inspection. First of all, reproduce symptoms and understand them fully. Ask customer about his/her complaints carefully. In some cases, it is necessary to check symptoms by driving vehicle with customer. CAUTION: Customers are not professional. It is dangerous to make an easy guess like "maybe the customer means that...," or "maybe the customer mentions this symptom". : GO TO 2.
2. CHECK THE STATUS Power steering fluid leakage and check the power steering fluid level. Refer to " «INSPECTION»(ref-593945-S37718804152014012200000) ". Check the drive belt tension. Refer to " «CHECKING»(ref-593939-S00097205052014012200000) ". Check the power steering gear for damages, cracks and fluid leakage. Refer to " «INSPECTION»(ref-593945-S33257316712014012200000) ". Check the relief oil pressure. Refer to " «INSPECTION»(ref-593945-S02504177222014012200000) " (With heated steering wheel), " «INSPECTION»(ref-593966-S09322931222014012200000) " (Without heated steering wheel). : GO TO 3.
3. DIAGNOSIS CHART BY SYMPTOM Perform the diagnosis by symptom. Refer to " «DIAGNOSIS PROCEDURE»(ref-593981-S06177220982014012200000) ". : GO TO 4.
4. FINAL CHECK 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? YES: INSPECTION END NO: GO TO 2 .

Scheme 5

Scheme 6

Scheme 7

1. The EPS system controls the power steering solenoid valve through the power steering control unit.
2. The valve driving voltage to control the power steering solenoid valve varies according to the vehicle speed.

Scheme 8

1. Power steering solenoid valve is closed while a vehicle is stopped.
2. Pinion "1R", "2R" and "3R" are closed depending on steering torque of steering wheel.
3. Oil pressure "P" in the gear housing assembly is the sum of oil pressures occurred in "2R" and "3R". This results in a light steering force because of high pressure.

Scheme 9

1. Power steering solenoid valve is opened during high-speed operation.
2. Pinion "1R", "2R" and "3R" are closed depending on steering torque of steering wheel.
3. Oil pressure "2R" does not occur because the power steering solenoid valve is on full throttle.
4. Oil pressure "P" in the gear housing assembly includes only oil pressure occurred in "3R" and results in a heavy steering force.

Scheme 10

PHYSICAL VALUES

Terminal No. (Wire color) Description Condition Value (Approx.) + - Signal name Input/Output 1 (Y) Ground Power steering solenoid valve voltage Output Vehicle speed: 0 km/h (0 MPH) (Engine is running) 4.4 - 6.6 V Vehicle speed: 100 km/h (62 MPH) 2.4 - 3.6 V 3 (G) Ground Ignition switch power supply Input Ignition switch: ON Battery voltage Ignition switch: OFF 0 V 5 (LG) Ground Power steering solenoid valve ground - Always 0 V 6 (B) Ground Ground - Always 0 V 8 (P) Ground Vehicle speed signal Input Vehicle speed: 40 km/h (25 MPH) CAUTION: Check air pressure of tire under standard condition. NOTE: The maximum voltage varies depending on the specification (destination unit). 10 (V) Ground Engine speed signal Input Engine is running Warm-up condition Idle speed Engine is running Warm-up condition Engine speed: Approx. 2, 000 rpm

FOR USA AND CANADA: Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the " SRS AIRBAG (EXCEPT CROSSCABRIOLET) " and " SEAT BELTS (EXCEPT CROSSCABRIOLET) " of this service information.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

FOR MEXICO: Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is included in the " SRS AIRBAG (EXCEPT CROSSCABRIOLET) " and " SEAT BELTS (EXCEPT CROSSCABRIOLET) " of this service information.