Vehicle ignition and engine management system Audi A4 B6
Engine Electrical System Specification
Warning: Individual characteristics are also given in the text of the Chapter and, if their implementation is mandatory, are highlighted in bold. Battery...
Warning: Individual characteristics are also given in the text of the Chapter and, if their implementation is mandatory, are highlighted in bold. Battery...
OBD II 2nd Generation On-Board Diagnostic Codes
Power unit 1) — The diagnostic code may be displayed during self-diagnosis with the engine off due to the lack of a signal from the CKP sensor. If the engine...
Power unit 1) — The diagnostic code may be displayed during self-diagnosis with the engine off due to the lack of a signal from the CKP sensor. If the engine...
Ignition and engine management system
The ignition system produces sparks that ignite the sucked-in fuel-air mixture. To do this, the ignition coils convert the 12 V voltage into 30,000 V. In...
The ignition system produces sparks that ignite the sucked-in fuel-air mixture. To do this, the ignition coils convert the 12 V voltage into 30,000 V. In...
Checking the ignition and injection control system
Please also refer to Section Troubleshooting . The control system components are very reliable. Failures are usually due to unreliability or contamination of...
Please also refer to Section Troubleshooting . The control system components are very reliable. Failures are usually due to unreliability or contamination of...
Troubleshooting — General Information and Preliminary Checks
Please also refer to Section Troubleshooting and the following Sections. The ignition system and the fuel system are interconnected components of the engine...
Please also refer to Section Troubleshooting and the following Sections. The ignition system and the fuel system are interconnected components of the engine...
Checking and adjusting the ignition timing angle
The ignition timing angle is constantly changed by the engine management system. External correction is not possible. The angle can be checked using special...
The ignition timing angle is constantly changed by the engine management system. External correction is not possible. The angle can be checked using special...
Spark plugs
The spark plug consists of a central electrode, an insulator with a housing, and a ground electrode. A spark jumps between the central electrode and the ground...
The spark plug consists of a central electrode, an insulator with a housing, and a ground electrode. A spark jumps between the central electrode and the ground...
Diesel engine preheating system
In a cold diesel engine, when the air in the cylinders is compressed, the temperature required for the fuel to self-ignite is not reached. For this reason,...
In a cold diesel engine, when the air in the cylinders is compressed, the temperature required for the fuel to self-ignite is not reached. For this reason,...
Removal and installation glow plugs
Removal 1. Disconnect the glow plug connector. 2. Remove the glow plugs using the HAZET 2530 or VW/AUDI-3320 crank wrench. Installation 1. Screw in the spark...
Removal 1. Disconnect the glow plug connector. 2. Remove the glow plugs using the HAZET 2530 or VW/AUDI-3320 crank wrench. Installation 1. Screw in the spark...
Checking glow plugs
If you have difficulty starting the engine, you should check the operation of all glow plugs. The engine must be cold when checking (ambient temperature),...
If you have difficulty starting the engine, you should check the operation of all glow plugs. The engine must be cold when checking (ambient temperature),...
Diagnostics of electronic control systems and diagnostic equipment
The OBD system includes several diagnostic devices that monitor individual parameters of the toxicity reduction systems and record detected failures in the...
The OBD system includes several diagnostic devices that monitor individual parameters of the toxicity reduction systems and record detected failures in the...
Diagnostics of electronic engine control systems, injection, ignition and auxiliary brake systems
The location of the connector for connecting the diagnostic equipment is shown in the illustration below. The decoding of the codes is given in Specifications...
The location of the connector for connecting the diagnostic equipment is shown in the illustration below. The decoding of the codes is given in Specifications...
Controller for interfacing a personal computer with an on-board OBD II self-diagnostic system according to SAE (PWM and VPW) and ISO 9141-2 protocols
Warning: VPW standard applies to GM models, PWM standard applies to Ford models, ISO 9141-2 standard applies to Asian and European models. General information...
Warning: VPW standard applies to GM models, PWM standard applies to Ford models, ISO 9141-2 standard applies to Asian and European models. General information...
Using an Oscilloscope to Monitor Signals in Control System Circuits
Digital multimeters are great for testing static electrical circuits and for recording slow changes in monitored parameters. When performing dynamic tests on a...
Digital multimeters are great for testing static electrical circuits and for recording slow changes in monitored parameters. When performing dynamic tests on a...
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