Nissan Skyline R34 workshop service manual page 9

text version of content this owner's manual page from owners manual to the vehicle Nissan Skyline, year of production 1998 - 2002:

ENGINE AND EMISSION CONTROL OVERALL SYSTEM A 1 System Description The engine control system, which performs various controls such as the fuel injection control and ignition timing control with a single control unit, has been adopted. Diagnostic system applicable to CONSULT has been adopted for easier inspection, service, and trouble diagnostic operations. Description of Engine Control I Description \, Performs optimum fuel injection for every operation condition for improved exhaust performance and response. Adopts SOFlS (Sophisticated and Optimized Fuel Injection System) Fuel injection control control for optimized fuel injection. 0 Adopts airbuel ratio feedback learning control that performs com- pensation of airfiuel ratio for improved drivability when the system is in a transitional condiiion due to sudden change in airfiuel ratro. Uses an ignition timing map stored in the control unit to perform controls so that the optimum ignition timing is obtained for every operating condition. Ignition timing control Performs knock control, in which the ignition timing is advancedl 0 retarded according to the presence of knocking, so that the opti- mum i nition timing is obtained for every operating condition and type oPfue1. Performs feedback control to obtain the target idle speed for various Idle speed control conditions, such as during warm-up or when the air conditioner is O actuated, via the AAC valve that adjusts the intake air amount when the throttle valve is fully closed. Turns the fuel pump relay OWOFF according to the engine speed Fuel pump drive signal. O In RB25DET model, FPCM (Fuel Pump Control Modulatoi) control has been adopted for reduced idle noise. Heated oxygen sensor Promotes warm-up of the heated oxygen sensor for improved air1 0 heater control fuel ratio feedback function. Air conditioner cut control Tums the air conditioner relay OFF at starting or during acceleration 0 to reduce the engine load. -- Auxiliary electric fan con- Tums the auxiliary electric fan relay ONIOFF according to the - trol engine coolant temperature signal and air conditioner signal. Engine, M, TCS,ABS Reduces engine toque during gearshift or when TCS (Traction integrated control Control System) is being operated via a multiplex communication 0 lino - - According to the engine speed and load, controls the cam phase by Variable valve timing con- hydraulic pressure to change intake valve open/close timing for trol Increased engine torque at low and middle speeds and for enhanced out~ut. I o I Canister purge control Performs duty control of the canister purge air according to various 0 ooeratina conditions. -r-~ e-- --- - air intake valve Controls the intake air passage in the intake manifold collector to control increase engine torque at low and middle speeds and to enhance 0 output. According to operation conditions, turns the air jet swirl control sole- Air jet swirl control noid valve ONIOFF to openlclose the air jet swirl control valve for 0 stable combustion. pressure control Tums the Turbo pressure control solenoid valve ONIOFF according - to operation conditions. Ensures the vehicle's safe operation and enables the vehicle to be Fail-safe and backup con- driven in an emergency when any of the system major components 0 trols (microcomputer in the control unit, engine coolant temperature sensor, etc.) fails. For easier trouble diagnosis, self-diagnostic system is adopted and Diagnostic system the existing diagnostic system is modified so that CONSULT can be 0 used.

owners manual Nissan Skyline

owners manual Nissan Skyline - year of production: 1998, 1999, 2000, 2001, 2002 - Nissan Skyline R34 workshop service manual EN