Mercedes C-Class

W203 since 2000 of release

Repair and car operation

Problems of the block of electronic control and operating signals

Control unit automatic transmission


К38 — the Module of the relay of blocking of a starter N2/2 — the SRS Control unit N15/1 — the Control unit of 5-step AT (TCM)	N15/3 — the Control unit of transmission (TCM) N54 — the RCL Control unit

Purpose of contacts of the 13-contact socket of transmission


1 — the Sensor of 3 turns (Y3/6n3) 2 — Э / the magnetic valve of adjustment of modulating pressure (Y3/6y1) 3 — the Sensor of 2 turns (Y3/6n2) 4 — the Entrance signal of the sensor of temperature (Y3/6b1) and contact of blocking of a starter (Y3/6s1) 5 — 6 — Supply voltage э / magnetic valves 7 — sensor Supply voltage 8 — Э / the magnetic valve of gear shifting of 2-3 (Y3/6y5)	9 — Э / the magnetic valve of gear shifting of 3-4 (Y3/6y4) 10 — Э / the magnetic valve of adjustment of pressure of switching (Y3/6y2) 11 — Э / the magnetic valve (blocking of the converter of rotation) (Y3/6y6) 12 — the sensor Case 13 — Э / the magnetic valve of gear shifting of 1-2/4-5 (Y3/6y3)

Entrance and target signals of the AT 722.6 control unit and tire of data exchange of CAN

N15/3 — the ETC Control unit
X11/4 — the DLC Socket
Y3/6b1 — the Sensor of temperature of ATF
Y3/6n2 — the Sensor of turns 2
Y3/6n3 — the Sensor of turns 3
Y3/6s3 — Contact of blocking of a starter
Y3/6u1 — the Electromagnetic valve of management of pressure modulations
Y3/6u2 — the Electromagnetic valve switchings
Y3/6u3 — the Electromagnetic valve of switchings 1-2 and 4-5
Y3/6u4 — the Electromagnetic valve of switching 3-4
Y3/6u5 — the Electromagnetic valve of switching 2-3

Y3/6u6 — the Electromagnetic PWM valve of blocking of the hydrotransformer
А1 — the Control panel
CAN — the Tyre of an impellent compartment
N3/10 — the ME-SFI [ME] Control unit
N15/3 — the ETC Control unit
N15/5 — the Control unit of the electronic lever of switching
N47 — the Control unit of antiprobuksovochny system
N73 — the EIS Control unit

Tasks

The ETC control unit (N15/3) defines the current working parameters of a vehicle and exercises administration of consecutive gear shifting, proceeding from simplicity of switching and movement parameters.

Activation of electromagnetic valves of switching is carried out at the command of the ETC control unit (N15/3). The demanded size of pressure is calculated on the basis of entering data and necessary adjustment adjustment of a transferred torque.

To processing is exposed the following data arriving from other systems:

ME-SFI control unit (N3/10)/CDI (N3/9)

· A torque developed by the engine;
· Gear shifting;
· Emergency operation;
· Functioning темпостата;
· Activation of system of restriction of speed;
· Starter functioning;
· Kickdown mode activation (as on models 01.06.02)
· Working parameters of the engine.

Control unit of the electronic lever of switching (N15/5)

· Position of the lever;
· Sensor switch of modes of transmission (S16/5);
· Sensor switch of activation of the kickdown mode (S16/6) (till 31.05.02)

Control unit of antiprobuksovochny system (N47)

· Frequency of rotation of wheels;
· Torque of brake mechanisms;
· Fact of squeezing of a pedal of a foot brake;
· Condition of the parking brake.

EIS [EZS] control unit (N73)

· Condition of contact plugs;
· Transmission option.

Control panel (А1)

· Position of the lever of the selector / the chosen transfer.

Control unit of antiprobuksovochny system (N47)

· Transmission option;
· Information on the chosen transfer.

ME-SFI control unit (N3/10)/CDI (N3/9)

· A torque developed by the engine;
· Emergency operation;
· Activation of a mode of movement;
· Position of the lever of the R/N selector;
· Sensor switch of modes of transmission (S16/5)
· Transmission option.