Gasoline engine management system Nissan Almera 1

General Precautions
Accumulator battery Use only 12V battery. Do not disconnect or connect battery wires while the engine is running. The engine control unit Do not disassemble the engine...

Special tools and fixtures
EG 11140000 Adapter for measuring engine speed KV10117100 Wrench for heated oxygen sensor (GA engines) KV10114400 Key for oxygen sensor (SR engine). a: 22 mm

Electrical circuit diagram
GA engines SR engine

Structural diagram of the engine management system
GA14DE and GA16DE engines for Europe SR20DE engine for Europe

Location of main components
GA14DE and GA16DE engines for Europe SR20DE engine for Europe

Releasing fuel pressure
1. Remove the fuel pump fuse. 2. Start the engine. 3. After stopping the engine, rotate it two or three times with the starter to completely relieve pressure. 4. Turn...

Removal and installation of nozzles
GA engines 1. Relieve fuel pressure in the fuel system. 2. Disconnect the vacuum hose from the pressure regulator and the fuel hoses from the fuel rail. 3. Disconnect...

Onboard diagnostic system
Malfunction indicator Malfunction indicator (MIL — Malfunction Indicator Lamp) lights up when the ignition is turned on to check the lamp. After starting the engine, it...

Adjustment of idle speed, ignition timing and composition of the combustible mixture
1. Check for leaks in the vacuum hoses. normal contacts in electrical connectors, normal operation of the throttle and its position sensor. Check if the air cleaner is...

Fuel pressure check
When connecting fuel hoses, use new clamps. Tighten the clamps with a torque wrench. Make sure the clamp screws do not touch the surrounding parts. 1. Reset fuel...

Gasoline vapor recovery system
The gasoline vapor recovery system is used to reduce hydrocarbon emissions from the fuel system to the atmosphere. Takeovers (adsorption) vapor occurs in an adsorber...

Forced crankcase ventilation system
Description Forced crankcase ventilation system (PCV — Positive Crankcase Ventilation) designed to return to the intake manifold gases that have broken through from the...

Checking the voltage at the connector of the engine control unit
The control unit is located behind the center console (see section « Location of main components ») and to access it, you must remove the bottom cover of the console....

Checking System Components
ECM relay The relay is located under the engine control unit, and is used to remove voltage from part of the ECM circuits on a signal from the unit itself. To test the...