Mercedes C-Class

W203 since 2000 of release

Repair and operation of the car



Mercedes-Benz
+ Mercedes-Benz cars of class C (W-203)
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling system and heating
+ Power supply system and release
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   Specifications
   Diagnostics of malfunctions of onboard electric equipment - the general information
   Check of the electric motor of a screen wiper
   Check of the warmed back glass
   Relay and safety locks
   Replacement of glow lamps of devices of external lighting
   Replacement of glow lamps of devices of internal lighting
   Removal and installation of the sensor of daylight
   Removal and installation of a headlight
   Removal and installation of a fog light
   Removal and installation of the lens of a fog light
   Removal and installation of a back lamp
   Replacement of the battery of a key of the ignition/remote control
   Removal and installation of the electric motor of screenwash
   Removal and installation of the electric motor of a cleaner of back glass
   Removal and installation of the tank of water and electric motor of the pump
   Removal and installation of the sensor of a rain
   Removal and installation of a sound signal
   Removal and installation of sensors of the parking
   Removal and installation of the sensor of temperature of external air
   Removal and installation of the control panel
   Removal and installation of the understeering switch
   Removal and installation of the switch of a forward plafond on a ceiling
   Removal and installation of group of switches to the left of the control panel
   Removal and installation of the switch of the central console
   Removal and installation of switches in the doorway
   Removal and installation of door switches of internal lighting
   Removal and installation of precautionary indexes of the assistant to the parking
   Removal and installation of the lighter
   Removal and installation of the radio receiver
   Removal and installation of a loudspeaker
   Digital tire of data of CAN
   The uniform lock - general information
   Installation of additional electric and electronic devices
   Appointment and arrangement of electric sockets
   + Schemes of electric equipment







Check of the electric motor of a screen wiper

The electric motor of a screen wiper is in a water-collecting compartment under a windshield. For check it is necessary to remove the corresponding cover.

Designation of plugs

On the electric motor there are following plugs:

· The plug 31 is accession of weight (the general for all electric equipment of the car).
· The plug 53 receives tension for the first speed of a screen wiper.
· The plug 53a feeds with current (+) the extreme provision of a screen wiper. The electric motor receives through a brush tension until the cleaner does not return to a starting position when the driver switches off a screen wiper.
· The plug 53b gives tension for the second speed of a screen wiper (an auxiliary winding).
· Via the plug 53e the electric motor is stopped at return after shutdown that the screen wiper did not pass the parking through the situation.
· Are available not always: the plug 53 with gives food to the windscreen washer pump.

Check of the electric motor of a cleaner

At first it is necessary to find out what has defect, the electric motor or is absent food. At the same time it is necessary to work as follows:

 PERFORMANCE ORDER

1. Rasstykuyte the multicontact socket at the electric motor.
2. Bring 2 auxiliary cables (+) and (-) from the rechargeable battery of the car to the screen wiper electric motor:

· Carry out one cable from the positive plug of the battery to the plug 53 or 53b.
· Bring the second cable from the negative plug of the rechargeable battery to the plug of 31 electric motors.
3. Now the electric motor has to turn on depending on the used plug on I or II steps. If it does not occur, the electric motor or the corresponding step have defect. Remove the electric motor.