REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Nissan Maxima QX (1993 release)

general info. full specifications. diagnostics. hints. tips. tricks

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Nissan
	Maxima QX
		Introduction
		Operating Instructions
		Adjustment and routine maintenance
		Engine
		System of cooling, heating
		The power supply system and release
		Electric motor
		Engine Control Systems
			general information
			System of onboard diagnostics (OBD) - a principle of functioning and codes of malfunctions
			Removal and installation RSM
			Check of the state, replacement and adjustment of the throttle position sensor (TPS)
			Check and replacement of the gauge measuring the mass air flow (MAF)
			Check and replacement of the gauge of absolute pressure in the pipeline (MAP)
			Check and replace the intake air temperature sensor (IAT)
			Check and replacement of the gauge engine coolant temperature (ECT)
			Check and replace the crankshaft position sensor (CKP)
			Check and replace the camshaft position sensor (CMP)
			Check and replacement of the gauge-switch of pressure in the system hydrostrengthening wheel (PSP)
			Check and replacement of the oxygen gauge (l-probe)
			Check and replace the knock sensor
			Check and replace the fuel temperature sensor Vehicle speed (VSS)
			Check and replace the vehicle speed sensor (VSS)
			Check and replacement of components of system of stabilization of turns of idling
			The control system functioning valve power
			The system controlled crankcase ventilation (PCV)
			Exhaust gas recirculation (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
			Catalytic converter - the general information, check of a condition and replacement
		Transmission
		Coupling and power shafts
		Brakes
		Suspension and steering
		Body
		Onboard electric

printable version

Check and replace the vehicle speed sensor (VSS)

VSS is mounted on transmission housing and a sensor with variable reluctance. The sensor generates a sinusoidal AC signal whose frequency is proportional to the vehicle speed. Information comes from VSS uses RSM to manage the length of time of opening of injectors fuel injection and transmission shifting. In addition, VSS is used as a drive of a speedometer. Sensor Failure leads to record in memory OBD relevant DTC.

CHECK

PERFORMANCE ORDER

The correct functioning of VSS can be checked on the adequacy of the speedometer.

1. Remove the VSS with the transmission housing.

2. Connect a voltmeter to the two terminals of the sensor and switch the meter to AC voltage measurement. Start manually rotate the drive gear sensor - voltmeter should register a signal amplitude of approximately 0.5 V.

3. In the absence of the signal voltage sensor must be replaced.
4. If the positive results of the above test, check for open wiring on the circuit between the connector and VSS dash (see. The wiring diagram at the end of the Head the Onboard electric equipment). If the wiring in the order, drive to a workshop to diagnose the PCM and perform the proper reconditioning.

REPLACEMENT

PERFORMANCE ORDER

1. Poddomkratte car and establish it on props.
2. Disconnect the speed sensor wiring.

3. Having turned out a coupling bolt, loosen the clamp and remove the VSS of the transmission.

4. Check the condition of the O-ring sensor, in case of need make replacement.

5. Install in the reverse order.

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Check and replace the fuel temperature sensor Vehicle speed (VSS)

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Check and replacement of components of system of stabilization of turns of idling