Vehicle emission control system Nissan Terrano 1 (WD21)

Emission System Specifications
Technical data Air flow control resistance 70 0m Oxygen sensor resistance 85±8.5 Kom Temperature sensor resistance: At temperature 20 2.3-2.7 kOhm At 50°C 680-1000 ohm...

General information about the toxicity reduction system
The system is designed to reduce emissions of nitrogen oxides, carbon monoxide and hydrocarbons into the atmosphere. Improper care of the toxicity reduction system or...

Positive crankcase ventilation (PCV)
1. The forced crankcase ventilation system is designed to reduce the content of hydrocarbons in engine emissions by scavenging the crankcase. Fresh air taken from the...

Recirculation system (EGR)
1. Designed to reduce the content of nitrogen oxides in exhaust gases by reducing the combustion temperature of the combustible mixture. This is achieved by redirecting...

Exhaust after-oxidation system
1. The system of additional oxidation of exhaust gases reduces the content of hydrocarbons and CO in emissions by injecting filtered air into the exhaust manifold. The...

Gasoline Evaporative Emission System (EEC)
General information 1. The system is designed to capture gasoline vapors, preventing them from entering the atmosphere in the form of hydrocarbons (photo). 5.1...

Electronic fuel injection system self-diagnosis mode
Attention! On cars after 1996, diagnostics of failures in the fuel and auxiliary systems is carried out only in a car service. There are no LED indicators on these...

Air flow regulator — removal, inspection and installation
Removing 1. Disconnect the hose from the regulator ( see photo in Chap. 4, section 9 ). 2. Disconnect the connector. 3. Turn away bolts and remove a regulator from...

Fuel pressure regulator and solenoid valve — check and replace
Examination 1. The solenoid valve of the fuel pressure regulator ensures that a vacuum is applied to the regulator at the time of starting a hot engine and increases the...

Processor unit sensors
Engine temperature sensor - check 1. The sensor needs to be checked if the engine is difficult to start and if code 13 is detected in the self-diagnosis mode (see...