Engine management systems Toyota Land Cruiser 100

Engine management and emission control systems
General information In order to reduce the level of emissions of toxic components into the atmosphere that enter the engine exhaust gases as a result of evaporation and incomplete combustion of fuel, as well as to...

Engine Management System Specifications
Heated lambda probe Characteristic Meaning Working voltage, V 0.4÷0.6 Electrical resistance, Ohm 11÷16 Crankshaft position sensor Characteristic Meaning Resistance between terminals Ne+ and Ne–, Ohm At temperatures up...

On-Board Diagnostics (OBD) System — Operating Principle and Error Codes
Note: All models under consideration are equipped with OBD II systems (second generation), for reading data from the memory of which a special scanner is required. In view of the above, reading fault codes from the OBD...

Using an oscilloscope to monitor the operating signals of a control system
General information Digital multimeters are great for testing static electrical circuits and for recording slow changes in monitored parameters. When performing dynamic tests on a running engine and when identifying the...

Checking the condition and replacing the ECM
Examination ECM Installation Details 1. On all models, the ECM is mounted on the right side under the instrument panel, behind the glove compartment (refer to the illustration above), – To ensure access, remove the...

Information sensors — general information and testing
Caution: To avoid damaging the ECM, use only a high-voltage digital voltmeter when performing the following tests (over 10 Mohm) impedance! Warning! A vehicle equipped with an OBD-II system must be taken to a service...

Replacement of information sensors
Engine Coolant Temperature (ECT) Sensor Attention! Before starting the procedure, wait until the engine has completely cooled down! ECT Sensor Installation Components On V8 petrol models the sensor is located under the...

Evaporative Emissions (EVAP) System
General information Typical EVAP system component layout diagram The EVAP system collects fuel vapors that accumulate in the fuel system while the vehicle is parked and ensures that they are discharged into the intake...

Controlled Crankcase Ventilation (PCV) System
General information Diagram of crankcase gas flow in engines equipped with a typical PCV system PCV system (refer to the illustration above) serves to reduce the emission of hydrocarbon compounds into the atmosphere by...

Catalytic Converter — General Information, Checking and Replacement
Note. To avoid violating the warranty obligations that apply to components of exhaust gas reduction systems, check and maintain the catalytic converter in the workshop of a car service station. General information A...

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