Nissan Maxima QX

since 1993 of release

Repair and car operation


Nissan Maxima QX
+ Nissan Maxima brand Cars
+ Maintenance instruction
+ Settings and routine maintenance
+ Engine
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
- Control systems of the engine
   General information
   System of onboard diagnostics (OBD) - a principle of functioning and codes of malfunctions
   Removal and RSM installation
   Check of serviceability of a condition, replacement and adjustment of the sensor of provision of a butterfly valve (TPS)
   Check of a condition and replacement of the sensor of measurement of weight of an air stream (MAF)
   Check of a condition and replacement of the sensor of absolute pressure in the pipeline (MAR)
   Check of a condition and replacement of the sensor of temperature of soaked-up air (IAT)
   Check of a condition and replacement of the sensor of temperature of cooling liquid of the engine (eats)
   Check of a condition and replacement of the sensor of provision of a cranked shaft (SKR)
   Check of a condition and replacement of the sensor of provision of a camshaft (SMR)
   Check of a condition and replacement of the sensor switch of pressure in system of hydrostrengthening of a wheel (PSP)
   Check of a condition and replacement of the oxygen sensor (l-probe)
   Check of a condition and replacement of the sensor of a detonation
   Check of a condition and replacement of the sensor of temperature of fuel of speed of movement of the car (VSS)
   Check of a condition and replacement of the sensor of speed of movement of the car (VSS)
   Check of a condition and replacement of components of system of stabilization of turns of idling
   Control system of functioning of the capacity valve
   System of operated ventilation of a case (PCV)
   System of a retsirkulyatsiya of the fulfilled gases (EGR) - the general information, check of a condition and replacement of components
   System of catching of fuel evaporations (EVAP) - the general information, check of a condition and replacement of components
   The catalytic converter - the general information, check of a condition and replacement
+ Transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment




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Check of a condition and replacement of the sensor switch of pressure in system of hydrostrengthening of a wheel (PSP)

PSP is normally opened sensor switch which has been built in in the pressure head hydraulic line between a case of the steering mechanism and the steering pump. When pressure in a hydraulic path reaches a certain value, there is a sensor switch short circuit on what RSM is right there notified. Such tracking of a threshold pressure allows the management module to modify in time turns of idling of the engine at commission of maneuvers. At identification of signs of refusal of functioning of the RSM sensor brings in memory of the block of self-diagnostics the corresponding code of malfunction. Check of a condition of the sensor switch should be made, if the engine spontaneously глохнет during a car parking or when turns of idling are constantly overestimated.

CHECK

 PERFORMANCE ORDER

 Performance described below procedure can lead to entering in memory of OBD of malfunction which will be highlighted by a control lamp “Check the engine”. On termination of check and the corresponding regenerative repair do not forget to clear memory of system (see. The section System of onboard diagnostics (OBD) - a principle of functioning and codes of malfunctions).

1. Disconnect from the sensor switch electroconducting and connect an ohmmeter to plugs on the assembly case.

2. Start the engine on single turns.

 Track, that connecting wires did not get to contact to moving components in an impellent compartment.

3. Bring forward wheels of the car into rectilinear situation and consider the indication of an ohmmeter which in this case should equal infinity.
4. Rotating a steering wheel in any direction, watch measuring instrument indications. At approach of a steering wheel to any of extreme provisions the PSP sensor switch should become isolated that proves to be true indications of an ohmmeter close to zero.
5. At negative results of check replace the sensor switch. If the sensor switch is serviceable, it is necessary to check settings of single turns of the engine. Also check on break electroconducting going from RSM. Estimate quality of grounding of a black wire of a plait of the sensor.

REPLACEMENT

 PERFORMANCE ORDER

1. Disconnect electroconducting from the sensor switch
2. By means of two wrenches turn out the sensor switch from the connecting block.
3. Establish the new sensor switch to the place of removed, connect electroconducting.
4. Remove from a hydraulic path of system of the steering amplifier air jams (see. Head Suspension bracket and steering). In case of need correct level of hydraulic liquid (see. Head of Control and routine maintenance).