Mercedes C-Class (W202) car engine ignition system
General description of the ignition system The ignition system generates sparks that ignite the combustible mixture admitted into the cylinders of an internal combustion engine. The ignition coils convert the...
Ignition coils — removal and installation 4 cylinder engine Removing 1. Disconnect the plug connection between engine and ignition coils (X26/24). 2. Remove and set aside the washer reservoir. 3. Unscrew the...
Spark plugs — removal, installation, check Spark plugs should be changed every 2 years or 30,000 km. 1. Cool the engine to a temperature that your hand can withstand. 2. Remove the air filter cross tube. 3....
The index of the caloric number The spark plug consists of a central electrode, an insulator with a housing and a side electrode. The side electrode is hermetically fixed in the insulator, the...
Checking the diesel preheating device If the preheating control lamp does not flash, although the ignition and instrument lock-switch with an anti-theft device that locks the steering is in the warm-up...
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 chips 1 and 3 on the plug. 2. If now the...
Heating control relay Connection elements for heating control relay N 14 30 - terminal 30, continuous current; 31 - terminal 31, housing (–); 50 - terminal 50, voltage when the starter is...
Glow plugs — removal, inspection and installation To check the current consumption of individual glow plugs, the workshop uses a DC ammeter. The current clamp is clamped over a suitable insulated wire and the current is...
Coolant temperature sensor The temperature sensor measures the temperature of the coolant and transmits the corresponding signals to the control device. The sensor contains an NTC element (NTC -...
Self-diagnostics of the diesel heating device Electronically controlled diesel power supply system (EVE, ERE) carries out the diagnosis independently, and accumulates the detected malfunctions in the memory of...