Passat B2 (1981-1988)
Passat B3 (1988-1993)
Passat B4 (1988-1996)
Passat B5 (1996-2005)
Passat B6 (2005-2010)
Car gasoline injection system Volkswagen Passat B3
General information about the injection system
The advantages of gasoline injection systems compared to a carburetor are as follows: Precisely metered amount of fuel in each load mode, resulting in low fuel consumption and a...
The advantages of gasoline injection systems compared to a carburetor are as follows: Precisely metered amount of fuel in each load mode, resulting in low fuel consumption and a...
Exhaust gas toxicity control
Since 1/12/93 in Germany, regular monitoring of exhaust gas toxicity has been introduced for vehicles equipped with variable catalysts, as well as diesel engines. The control must...
Since 1/12/93 in Germany, regular monitoring of exhaust gas toxicity has been introduced for vehicles equipped with variable catalysts, as well as diesel engines. The control must...
Safety precautions when working with injection systems
Do not start the engine if the battery is not securely connected. The wires of the ignition and injection systems must be disconnected and connected only when the ignition is...
Do not start the engine if the battery is not securely connected. The wires of the ignition and injection systems must be disconnected and connected only when the ignition is...
Mono-Jetronic injection system
1 - control unit 2 - plug connector For actuator motor and throttle angle sensor. 3 - end damper For throttle valve. 4 - plug connector For valve injector and intake air...
1 - control unit 2 - plug connector For actuator motor and throttle angle sensor. 3 - end damper For throttle valve. 4 - plug connector For valve injector and intake air...
Interrogating the memory device for fault codes
Mono-Jetronic, Mono-Motronic up to 9/93 The electronics of the control unit makes it possible to recognize faults in the injection system. After the first occurrence of...
Mono-Jetronic, Mono-Motronic up to 9/93 The electronics of the control unit makes it possible to recognize faults in the injection system. After the first occurrence of...
Checking idling and CO content
Mono-Jetronic, RP motors, IF Mono-Motronic, RP motors, AAM, ABS, ADZ Caution: The idling speed and the CO content must be checked together. Both parameters are not adjustable....
Mono-Jetronic, RP motors, IF Mono-Motronic, RP motors, AAM, ABS, ADZ Caution: The idling speed and the CO content must be checked together. Both parameters are not adjustable....
Checking the valve injectors / forced idle switch
Mono-Jetronic, Mono-Motronic If the engine does not start, you should always first check whether the valve injector is injecting fuel at all and whether there is an ignition...
Mono-Jetronic, Mono-Motronic If the engine does not start, you should always first check whether the valve injector is injecting fuel at all and whether there is an ignition...
Throttle Potentiometer Check
Mono-Jetronic The potentiometer sends information about the position of the throttle valve to the control unit. The control unit uses this information to control the operation of...
Mono-Jetronic The potentiometer sends information about the position of the throttle valve to the control unit. The control unit uses this information to control the operation of...
Oxygen sensor test
Mono-Jetronic A malfunction in the adjustment of the oxygen sensor is checked by interrogating the memory device for trouble codes. Query the storage device. If the code 2 3 4 2...
Mono-Jetronic A malfunction in the adjustment of the oxygen sensor is checked by interrogating the memory device for trouble codes. Query the storage device. If the code 2 3 4 2...
Checking the Temperature Sensor
Mono-Jetronic, Mono-Motronic, Digifant, Motronic The Mono-Jetronic system, unlike the Digifant system, has 2 different temperature sensors. The intake air temperature sensor is...
Mono-Jetronic, Mono-Motronic, Digifant, Motronic The Mono-Jetronic system, unlike the Digifant system, has 2 different temperature sensors. The intake air temperature sensor is...
Checking the intake manifold heating system
Mono-Jetronic, Mono-Motronic To improve the dynamic properties during engine warm-up, an electric heater is installed in the intake manifold. The heater heats up in a matter of...
Mono-Jetronic, Mono-Motronic To improve the dynamic properties during engine warm-up, an electric heater is installed in the intake manifold. The heater heats up in a matter of...
Electrical check of the Mono-Jetronic injection system
In accordance with this manual, it is possible to electrically check the individual parts and wiring of the Mono-Jetronic system. Before checking, it is recommended to interrogate...
In accordance with this manual, it is possible to electrically check the individual parts and wiring of the Mono-Jetronic system. Before checking, it is recommended to interrogate...
Digifant / Simos injection system
1 - air filter 2 - knock sensor 3 - air flow meter 4 - CO content adjustment screw 5 - inlet hose 6 - pressure regulator 7 - TSZ-H system switch 8 - control unit of the Digifant...
1 - air filter 2 - knock sensor 3 - air flow meter 4 - CO content adjustment screw 5 - inlet hose 6 - pressure regulator 7 - TSZ-H system switch 8 - control unit of the Digifant...
Check / adjustment of idling and CO content Digifant
Digifant injection system, engines with designations ABF, PF, PB, PG, 2E Caution: Idle speed, CO content and ignition timing must be checked and adjusted together. On engines with...
Digifant injection system, engines with designations ABF, PF, PB, PG, 2E Caution: Idle speed, CO content and ignition timing must be checked and adjusted together. On engines with...
Digifant Oxygen Sensor Adjustment Check
Digifant injection system with variable catalyst (motors PF, PG and 2E up to 7/92) Test prerequisite: The exhaust system between the catalytic converter and the engine cylinder...
Digifant injection system with variable catalyst (motors PF, PG and 2E up to 7/92) Test prerequisite: The exhaust system between the catalytic converter and the engine cylinder...
Digifant idle speed increase valve test
Digifant The valve prevents the idle speed from dropping excessively when the load increases, for example, when many electrical consumers are switched on. Thanks to this, the...
Digifant The valve prevents the idle speed from dropping excessively when the load increases, for example, when many electrical consumers are switched on. Thanks to this, the...
Checking the switch for forced idling and enrichment of the combustible mixture at full throttle
Digifant injection system (motors with designations PF, PG) Increased fuel consumption and poor engine response can be caused by insufficient mixture enrichment at full load. The...
Digifant injection system (motors with designations PF, PG) Increased fuel consumption and poor engine response can be caused by insufficient mixture enrichment at full load. The...
Removing and installing / checking valve injectors Digifant / Simos
Attention: In the presence of the Digifant system, the supply voltage and resistance for all valve injectors are checked at a common connector. With the Simos system, the test is...
There is 1 comment
Attention: In the presence of the Digifant system, the supply voltage and resistance for all valve injectors are checked at a common connector. With the Simos system, the test is...
There is 1 comment
Simos injection system from 10/94
1 - fuel distributor 2 - bolt M6, 10 Nm; bolt M8, 20 Nm 3 - locking bracket 4 - sealing ring 5 - fuel pressure regulator 6 - valve nozzle 7 — a glass of a valve nozzle 8 - to the...
1 - fuel distributor 2 - bolt M6, 10 Nm; bolt M8, 20 Nm 3 - locking bracket 4 - sealing ring 5 - fuel pressure regulator 6 - valve nozzle 7 — a glass of a valve nozzle 8 - to the...
Electrical check of the Digifant injection system
In accordance with this manual, it is possible to electrically check the individual parts and wiring of the Mono-Jetronic system. Before checking, it is recommended to interrogate...
In accordance with this manual, it is possible to electrically check the individual parts and wiring of the Mono-Jetronic system. Before checking, it is recommended to interrogate...
K-Jetronic injection system
1 - throttle angle sensor 2 - switch TSZ-H 3 - throttle valve 4 - VEZ control unit 5 - ignition distributor 6 - ignition coil 7 - control unit of the system for stabilizing the...
1 - throttle angle sensor 2 - switch TSZ-H 3 - throttle valve 4 - VEZ control unit 5 - ignition distributor 6 - ignition coil 7 - control unit of the system for stabilizing the...
KE-Motronic injection system
1 - control unit of the KE-Motronic system 2 - throttle angle sensor 3 - throttle valve 4 - CO sampling tube 5 - plug connector For oxygen sensor. 6 - the control valve of the...
1 - control unit of the KE-Motronic system 2 - throttle angle sensor 3 - throttle valve 4 - CO sampling tube 5 - plug connector For oxygen sensor. 6 - the control valve of the...
Checking / adjusting idling and CO content K-Jetronic
K-Jetronic, engine with KR designation Attention: On a KE-Motronic engine with the designation 9A, the idle speed is only checked, not adjusted. In addition, before checking, it...
K-Jetronic, engine with KR designation Attention: On a KE-Motronic engine with the designation 9A, the idle speed is only checked, not adjusted. In addition, before checking, it...
Checking the stabilization of the engine speed at idle K-Jetronic
K-Jetronic. Function test Switch on the ignition and check if the control valve buzzes and vibrates. If so, then carry out a control check. Otherwise, disconnect the control valve...
K-Jetronic. Function test Switch on the ignition and check if the control valve buzzes and vibrates. If so, then carry out a control check. Otherwise, disconnect the control valve...
Checking the forced idle switch K-Jetronic
Warm up the engine to an oil temperature of at least +60°C. Check the vacuum hose to the forced idle switch valve for porosity and cracks, replace the hose if necessary. Start the...
Warm up the engine to an oil temperature of at least +60°C. Check the vacuum hose to the forced idle switch valve for porosity and cracks, replace the hose if necessary. Start the...
Temperature sensor check K-Jetronic, KE-Motronic
The temperature sensor is located on the left side of the cylinder head and measures the temperature of the coolant. A faulty temperature sensor causes cold starting problems and...
The temperature sensor is located on the left side of the cylinder head and measures the temperature of the coolant. A faulty temperature sensor causes cold starting problems and...
Checking and adjusting the position of the damper of the flowmeter K-Jetronic, KE-Motronic
The damper of the flow meter deviates to a greater or lesser extent, depending on the amount of air entering the engine. If the damper rest position is too low, the engine cannot...
The damper of the flow meter deviates to a greater or lesser extent, depending on the amount of air entering the engine. If the damper rest position is too low, the engine cannot...
Checking the control lever and distribution piston K-Jetronic, KE-Motronic
The intake air flow flows through the diffuser and deflects the flow meter flap. The flow meter damper, in turn, through the control lever acts on the control piston of the fuel...
The intake air flow flows through the diffuser and deflects the flow meter flap. The flow meter damper, in turn, through the control lever acts on the control piston of the fuel...
Removal and installation of the starting fuel valve / thermal switch K-Jetronic
The fuel start valve injects additional fuel into the intake manifold when the cold starter is engaged. Faulty start valve causes difficulty starting the engine (both cold and...
The fuel start valve injects additional fuel into the intake manifold when the cold starter is engaged. Faulty start valve causes difficulty starting the engine (both cold and...
Motronic injection system
1.6L AEK engine and 6-cylinder engine The BOSCH Motronic system is a combined ignition and injection system with a single control unit. In this chapter, I would like to focus...
1.6L AEK engine and 6-cylinder engine The BOSCH Motronic system is a combined ignition and injection system with a single control unit. In this chapter, I would like to focus...
Prescribed CO values
Attention: Fulfill the adjustment conditions. The engine code is stamped on the left side of the cylinder block. For ignition timing, see chapter « Ignition system ». 1) Measure...
Attention: Fulfill the adjustment conditions. The engine code is stamped on the left side of the cylinder block. For ignition timing, see chapter « Ignition system ». 1) Measure...
Removing and installing / checking valve injectors K-Jetronic
Valve injectors inject fuel continuously ahead of the intake valves. The amount of fuel injected is controlled by the fuel pressure. The valve injector injects fuel in a...
Valve injectors inject fuel continuously ahead of the intake valves. The amount of fuel injected is controlled by the fuel pressure. The valve injector injects fuel in a...
Check / removal and installation of the fuel pump
The fuel pump is located along with the fuel gauge sensor in the fuel tank. The K-Jetronic injection system has an additional underbody fuel pump next to the fuel tank. Test...
The fuel pump is located along with the fuel gauge sensor in the fuel tank. The K-Jetronic injection system has an additional underbody fuel pump next to the fuel tank. Test...
Checking the fuel pump relay
The fuel pump relay test only needs to be done when the fuel pump is not working. Check the fuse No. 18 of the fuel pump, if necessary, replace the fuse. Remove the fuel pump...
The fuel pump relay test only needs to be done when the fuel pump is not working. Check the fuse No. 18 of the fuel pump, if necessary, replace the fuse. Remove the fuel pump...
Throttle adjustment
Attention: Applies only to vehicles with manual transmission: for automatic transmission, see chapter « Automatic transmission ». Have an assistant fully depress the gas pedal....
Attention: Applies only to vehicles with manual transmission: for automatic transmission, see chapter « Automatic transmission ». Have an assistant fully depress the gas pedal....
Checking the intake air heating
Digifant, K-Jetronic, KE-Motronic (Mono-Jetronic see above) The intake air heating is controlled by an air damper in the air filter box depending on the load and temperature. The...
Digifant, K-Jetronic, KE-Motronic (Mono-Jetronic see above) The intake air heating is controlled by an air damper in the air filter box depending on the load and temperature. The...
Air filter replacement
The figure shows the engine air filter with the Digifant system 1 - replaceable air filter element 2 — the top part of the case of the air filter 3 - hex bolt, 5 Nm 4 - sealing...
The figure shows the engine air filter with the Digifant system 1 - replaceable air filter element 2 — the top part of the case of the air filter 3 - hex bolt, 5 Nm 4 - sealing...
Diagnostics of malfunctions of injection systems K-Jetromic / Digifant
The following prerequisites must be met before fault diagnosis can be used to detect faults: Error conditions during start-up are excluded. Applies to both cold and warm engines:...
The following prerequisites must be met before fault diagnosis can be used to detect faults: Error conditions during start-up are excluded. Applies to both cold and warm engines:...
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Power unit: Injection system Volkswagen Touareg 1 (2002-2006)
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