Engine management system «Simos» Volkswagen Passat B4

Integrated engine management system «SIMOS»
KSUD «Simos» applied to engines «AGG» release 1995-96 and includes a subsystem for controlling distributed fuel injection and a subsystem for controlling the ignition timing. The...

Checking and adjusting idling
The idling speed of the crankshaft and the content of carbon monoxide in the exhaust gases are automatically regulated by the KSUD controller, respectively, within 750-850 rpm and...

Checking and adjusting the throttle valve opening
The throttle valve opening is set at the factory and cannot be adjusted during operation.

Checking the fuel pressure in the system
Switch off the ignition. Connect the control pressure gauge hoses to the fuel supply hose and to the fuel line (pic. 2-124). Start the engine at idle and check the regulated fuel...

Checking the idle switch
Switch off the ignition. Disconnect the 8-pin sensor connector. Connect an ohmmeter to the terminal «3» sensor and to «mass» (pic. 2-125) and check the resistance with an...

Checking the supply voltage of the mass air flow meter
Switch off the ignition. Disconnect the 3-pin connector of the air flow meter, connect a voltmeter to the terminals «2» and «3» connector (pic. 2-127), turn on the ignition and...

Checking the coolant temperature sensor
Switch off the ignition. Disconnect the 4-pin connector of the coolant temperature sensor, connect to the terminals «1» and «3» sensor ohmmeter (pic. 2-128). measure the...
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Checking the intake air temperature sensor
Switch off the ignition. Disconnect the intake air temperature sensor connector, connect an ohmmeter to the sensor leads (pic. 2-129), measure the ambient temperature with a...

Checking the idle speed controller
Note. The idle air control forms a single unit with the idle throttle position sensor and the potentiometric throttle position sensor. Switch off the ignition. Disconnect the...

Checking injection nozzles
Winding resistance test. Switch off the ignition. Disconnect the injector connector, connect an ohmmeter to the injector terminals (pic. 2-130) and check the resistance. which...

Checking the oxygen content sensor in the exhaust gases
Checking the health of the sensor Switch off the ignition. Disconnect the oxygen sensor connector, connect a voltmeter to the terminals «3» and «4» (pic. 2-132, pos. 1), start the...

Checking the camshaft angle sensor
Checking the operation of the sensor Switch off the ignition. Move the rubber cover of the ignition distributor connector, connect the LED probe to the terminals «2» (green-white...

Checking the supply voltage of the crankshaft speed sensor
Switch off the ignition. Disconnect the sensor connector, connect a voltmeter to the terminals «1» and «3» cable part of the connector (pic. 2-134), turn on the ignition and check...

Checking the vehicle speed sensor
Note. Due to the small size of the terminals of the cable part of the controller connector, when checking through these terminals, it is recommended to use an adapter terminal...

Checking the supply voltage and connection to «weight» controller
Note. Due to the small size of the terminals of the cable part of the controller connector, when checking through these terminals, it is recommended to use an adapter terminal...

Ignition Timing Control Subsystem
On the engine «AGG» the ignition distributor is driven from the intermediate shaft. Cylinder firing order: 1-3-4-2. Initial ignition timing up to TDC: 6-12°. The resistance of the...

Spark plug
Brand and type: NGK BUR 6 ET. The gap between the electrodes is 0.7-0.9 mm.

Check of work of a subsystem of management of an angle of an advancing of ignition (UOP)
Check to make on the engine warmed up to oil temperature not lower than 80°C. Connect the UOS tester and control tachometer according to the operating instructions. Start the...

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