Ignition and engine management system G-Class (W463)

Engine Electrical System Specifications
Note: Individual characteristics are also given in the text of the Chapter and, if their implementation is mandatory, are highlighted in bold. Battery Electrolyte...

Basic information and safety precautions
The ignition system ensures ignition of the air-fuel mixture supplied to the combustion chambers of the cylinders. To form a spark of the required intensity, the 12-volt...

Checking the ignition and injection control system
Note: See also Section Troubleshooting . General information Ignition/engine control system components are high-reliability components and most failures are usually...

Troubleshooting — General Information and Preliminary Checks
Note: Please also refer to Section Troubleshooting and to the materials of the Part Diagnostics of electronic control systems and diagnostic equipment . The ignition...

Checking and adjusting the ignition timing angle
Since the ignition timing is constantly monitored and adjusted by the engine management system, manual adjustment of this setting is not provided. If necessary, the...

Spark plugs — checking condition
General description The spark plug consists of a central electrode, an insulator with a housing and a ground electrode(s). A spark jumps between the central electrode...

Removal and installation ignition coils
Attention! Before proceeding with the procedure, please read the list of safety measures set out in Section Basic information and safety precautions ! Details of...

Removal and installation the crankshaft position sensor (CKP)
Petrol models Installation details of the CKP sensor (L5) of gasoline engines 1. After replacing the CKP sensor, it is necessary to reinitialize the control module using...

Removal and installation the camshaft Hall sensor
Petrol engines Location of the Hall sensor (B6/1) of the camshaft of gasoline engines Diesel engines (M612) Installation details of the Hall sensor (B6/1) of the...

Removal and installation knock sensors (KS)
Installation details of KS sensors for petrol engines A16/2 — Left knock sensor (KS-2) 1. Remove the intake manifold. 2. Unscrew the corresponding KS sensor (right or...

Diesel engine preheating system
To achieve the required ignition temperature of the air-fuel mixture compressed in the cylinders of a cold engine, a pre-heating system is used. A special spark plug is...

Checking diesel glow plugs
If you have difficulty starting the engine, first check that all glow plugs are functioning properly. The test is performed on a cold engine (ambient temperature) and a...

Removal and installation glow plugs
Diesel Engine Glow Plug Installation Details 1. Start the engine and warm it up to normal operating temperature (about 80°C). Attention! The spark plugs should be...

Diagnostics of electronic control systems and diagnostic equipment
On-board diagnostic system The OBD system includes several diagnostic devices that monitor individual parameters of the toxicity reduction systems and record detected...

Controller for interfacing a personal computer with the on-board self-diagnostic system OBD II
Controller for interfacing a personal computer with the on-board OBD II self-diagnostic system according to SAE (PWM and VPW) and ISO 9141-2 standard protocols. Note: GM...

Using an Oscilloscope to Monitor the Performance 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...

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W463 (1999-2019)