Mercedes C-Class (W202) car engine ignition system

General description of the ignition system
The ignition system produces sparks that ignite the combustible mixture injected into the cylinders of an internal combustion engine. To produce a powerful ignition...

Safety precautions when repairing an electronic ignition system
Electronic ignition systems have a secondary voltage of up to 30 kV. Under unfavorable circumstances, such as high humidity in the engine compartment, voltage peaks can...

Ignition coils — removal and installation
4-cylinder engine Removal 1. Disconnect the plug connection between the engine and the ignition coils (X26/24). 2. Remove and set aside the windshield washer reservoir....

Spark plugs — removal, installation, inspection
Spark plugs should be changed every 2 years or 30,000 km. 1. Cool the engine to a temperature that can be tolerated by hand. 2. Remove the air cleaner cross pipe. 3....

Kalilny number Index
The spark plug consists of a central electrode, an insulator with a housing, and a side electrode. The side electrode is hermetically secured in the insulator, the...

Checking the diesel preheating device
If the preheating indicator lamp does not flash although the ignition and instrument switch with the anti-theft device that locks the steering wheel is in the preheating...

Incandescent lamp — check
1. Remove the 6-pin plug from the heating control relay, turn the ignition key to position "2" and connect the control wire to connectors 1 and 3 on the plug. 2. If the...

Heating control relay
Connecting elements of the heating control relay N 14 30 – terminal 30, continuous load current; 31 – terminal 31, body (–); 50 – terminal 50, voltage when pressing the...

Glow Plugs — Removal, Checking and Installation
To check the current consumption of individual glow plugs, a DC ammeter is used in a workshop. The current clamp is clamped over the appropriate insulated wire and the...

Coolant temperature sensor
The temperature sensor measures the coolant temperature and transmits the corresponding signals to the control device. The sensor contains an NTC element (NTC – negative...

Intake air temperature sensor — removal, inspection and installation
The temperature sensor measures the temperature of the intake air. This value, together with the signal from the intake manifold pressure sensor, serves as a measure of...

Self-diagnosis of the diesel heating device
The electronically controlled diesel fuel system (EVE, ERE) performs diagnostics on its own and accumulates the detected faults in the fault memory. If a serious fault...

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TEXTHTMLBB Code

190 (W201) (1982-1993)