Engine management system «Digifant» Volkswagen Passat B4

Integrated engine management system «DIGIFANT»
Vehicles with engines «RV» and «2E» equipped with an integrated engine management system (KSUD) «Digifant» Volkswagen company. KSUD is designed to control fuel injection and...

Fuel injection control subsystem
Fuel injection control subsystem KSUD «Digifant» developed on the basis of a distributed (multipoint) electronically controlled injection «LE-Jetronic» Bosch and is a system of...

Checking and adjusting the engine idle
Before adjusting and checking the idle speed of the engine, do the following: warm up the engine (oil temperature not less than 80°С); turn off consumers of electricity, including...

Checking the idle speed solenoid valve
Checking the performance of the idle speed solenoid valve is carried out on a warm engine (oil temperature not higher than 80°С), with a properly adjusted engine idle, with a...

Checking the supply voltage of the idle and full load switches on vehicles with an engine «PB»
Disconnect switch connector (pic. 2-105). connect a voltmeter to the leads «1» and «2» male part 2 connectors. Turn on the ignition and check the supply voltage of the switches,...

Checking and adjusting the idle switch on the engine «RV»
Disconnect the idle and full load switch connector. Connect an ohmmeter to the leads «1» and «2» (pic. 2-106) switch pads. Ohmmeter resistance should be 0 ohm (switch contacts...

Checking and adjusting the full load switch on the engine «RV»
Disconnect the idle and full load switch connector. Connect an ohmmeter to the leads «2» and «3» switch pads. Reinforce on throttle shaft 1 (pic. 2-107) goniometer disk with an...

Checking the system of forced stroke and enrichment of the mixture at full throttle opening on the engine «RV»
Warm up the engine (oil temperature not less than 80°С) and leave it to idle. Manually cause the throttle full load switch contact to close. Use a screwdriver to move the throttle...

Checking the fuel pressure regulator and residual fuel pressure
On vehicles with engine «RV» close the plug at the end of the fuel line with a rag to avoid injury from a jet of fuel under pressure. Place a container under the fuel line to...

Fuel pump
Note. Removing, installing and checking the performance of the fuel pump is carried out in the same way as described in the system «Mono-Jetronic». The performance of the pump...

Checking the air flow meter
Disconnect air line 1 from the air flow meter and disconnect the meter connector (pic. 2-113). Connect an ohmmeter to the leads «3» and «4» meter pads and check the resistance....

Checking the coolant temperature sensor
Disconnect the coolant temperature sensor blue connector (pic. 2-114) fuel injection subsystems. Relieve residual pressure in the engine cooling system. Remove the coolant...

Checking the intake air temperature sensor
Disconnect the air flow meter connector (pic. 2-113), connect an ohmmeter to the terminals «1» and «4» and check the compliance of the ohmmeter readings with the values. indicated...

Checking the injectors
Check the supply voltage of the injectors. To do this: disconnect the fuel line connector: connect the LED tester to the terminals of the line block: turn on the starter. In this...

Checking the starter injector on the engine «2E»
Check the supply voltage of the starting injector. To do this: turn on the ignition; disconnect the connectors of the fuel line and the starting injector, connect the LED tester...

Checking the intake manifold heater
Disconnect the air actuator vacuum hose from the thermostat. Separate the lower and upper parts of the air filter housing and remove the filter element. Check the position of the...

Checking the oxygen content sensor in the exhaust gases
Warm up the engine to a temperature of at least 80°C, check that the idle speed of the crankshaft corresponds to the required value, make sure that the exhaust gas system is...

Checking the electrical circuits of the KSUD «DIGIFANT»
Warning. It is forbidden to connect the probes of the measuring device (ohmmeter or voltmeter) to the connector pins. It is recommended to connect the device from the reverse side...

Ignition Timing Control Subsystem
The subsystem for controlling the ignition timing is controlled by the controller KSUD. This achieves high accuracy of ignition timing control, improves engine idling and...

Adjustment of the fuel injection control subsystem of cars «Passat GT 1.8 G60 Syncro»
Pic. 1. Placement of elements of the fuel injection control subsystem KSUD «Digifant G60» in the engine compartment: 1 - canister shut-off valve: 2 - fuel pressure regulator: 3 -...

Scroll blower «G60» cars «Passat GT 1.8 G60 Syncro»
Pic. 15. Supercharger «G60»: 1, 2 - halves of the supercharger body with spiral channels; 3 - movable displacer; 4 - eccentric drive shaft; 5 - eccentric shaft of plane-parallel...

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