Vehicle Engine Management Systems Nissan Maxima 4 (A32)

General information about the engine management system
The layout of the components of the engine management / reduction of toxicity of exhaust gases in the engine compartment of the 1993 and 1994 models. issue 1 -...

Engine control system fault codes
List of OBD-I Self-Diagnostic System Fault Codes (1993 and 1994 models issue) Code number Possible reason for rejection Code 11 Malfunction in a chain of the gauge of...

On-board diagnostics (OBD) system — the principle of operation and fault codes
Information about diagnostic tools Checking the correct functioning of the components of the injection systems and reducing the toxicity of exhaust gases is carried out...

Removal and installation of PCM
Warning! The car models covered in this manual are equipped with an additional security system (SRS). Before doing any work near the airbag unit, steering column or...

Checking the condition, replacing and adjusting the throttle position sensor (TPS)
The TPS is a variable resistance potentiometer mounted on the throttle body and connected to the throttle shaft. Based on the analysis of the signals from the TPS, the...

Check of a condition and replacement of the gauge of measurement of mass of an air stream (MAF)
The MAF sensor is placed in the air intake sleeve. A filament is used as a sensitive element in the sensor. The task of the sensor is to measure the amount (by weight)...

Checking the condition and replacing the absolute pressure sensor in the pipeline (MAP)
On models since 1996, no. an absolute pressure sensor in the pipeline, complete with a MAP solenoid valve, is used to monitor the depth of vacuum in the intake pipeline....

Checking the condition and replacing the intake air temperature (IAT) sensor
The IAT sensor is a thermistor (resistor whose resistance depends on temperature). The sensor is installed inside the intake duct and serves to determine the temperature...

Checking the condition and replacing the engine coolant temperature sensor (ECT)
The ECT sensor is also a thermistor (see Section Checking the condition and replacing the intake air temperature sensor (IAT) ). On models 1993 and 1994 issue the sensor...

Checking the condition and replacing the crankshaft position sensor (CKR)
On models since 1995, no. two SKR sensors are used, one of which (REF sensor) mounted at the front of the power unit, on the aluminum section of the engine sump,...

Checking the condition and replacing the camshaft position sensor (CMP)
Note. Performing the procedure described below may lead to the entry into the OBD memory of a malfunction, which will be highlighted by a control lamp "Check engine"....

Checking the condition and replacing the pressure switch in the power steering system (PSP)
The PSP is a normally open switch mounted in the hydraulic pressure line between the steering gear housing and the steering pump. When the pressure in the hydraulic...

Checking the condition and replacing the oxygen sensor (λ-probe)
General information The λ-probe located in the exhaust tract of the engine monitors the oxygen content in the exhaust gas stream. When O2 molecules come into contact...

Checking the condition and replacing the knock sensor
Knock sensors respond to an increase in engine vibration, usually caused by detonation of the air/fuel mixture. Based on the information received from the sensor, the...

Checking the condition and replacing the vehicle speed fuel temperature sensor (VSS)
In a complete set of some models since 1995 vol. Includes fuel temperature sensor. The sensor is used to measure the temperature of the fuel inside the gas tank and is a...

Checking the condition and replacing the vehicle speed sensor (VSS)
The VSS is mounted on the transmission case and is a variable reluctance sensor. The sensor generates a sinusoidal AC signal whose frequency is proportional to the speed...

Check of a condition and replacement of components of system of stabilization of turns of idling
Attention! When working in the engine compartment, be careful to keep hands, hair, and clothing away from moving components such as drive belts, fan blades, etc. Idle...

Power valve operation control system
1. Power valve is provided on 1993 and 1994 models. issue the system consists of a power valve placed inside the intake manifold), actuator, control solenoid valve and...

Controlled crankcase ventilation (PCV)
1. The PCV system is used to reduce the emission of hydrocarbon compounds into the atmosphere by removing crankcase gases from the engine. The unit is purged by forcing...

Exhaust Gas Recirculation (EGR)
Scheme of operation of a typical EGR backpressure sensor 1 - Valve-switch VRT; 2 - EGR valve; 3 - Electromagnetic EGRS; 4 - EGR temperature sensor; 5 - EGR pipe In order...

Fuel Vapor Capture System (EVAP)
General information The EVAP system accumulates fuel vapors accumulated in the power supply system while the vehicle is parked and ensures that they are discharged into...

Catalytic converter — general information, condition check and replacement
Note. To avoid voiding your warranty on emission control system components, have the catalytic converter inspected and serviced at an auto repair shop. General...