Mercedes-Benz ML320. Service manual - part 803

 

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Mercedes-Benz ML320. Service manual - part 803

 

 

The opening angle of the throttle valve will only be determined by the accelerator pedal specification when no 
limiting functions are active. 

The accelerator pedal position is detected by the set value potentiometer (B37r1) or Hall sensor in the pedal 
value sensor (B37) and information is released to the ME control unit (N3/10). In this way, the ME-SFI control 
unit determines the position of the throttle valve and actuates the throttle valve motor (M16/1 m1). 

The actual value potentiometer in the actuator (M16/1r1) signals the throttle valve position back to the ME-SFI 
control unit. 

The second potentiometer in the actuator (M16/1 r2) and the second signal from the pedal value sensor 
(potentiometer or Hall sensor) supplies a reference value for the plausibility check. In addition, the system 
switches over to the second potentiometer or the Hall sensor if the first potentiometer or Hall sensor fails 
(emergency mode). 

Adaptive accelerator pedal (model 203, 209, 211, 215, 220, 230): 

The engine control unit recognizes how the accelerator pedal is being actuated and switches between 
characteristic curves. Eighty percent of the engine load is released for a pedal travel of about 50 % for a sporty 
driver and about 40 % for a quiet driver. There is no further difference felt above a pedal travel of about 90 %. 

  

If, for example, the characteristic curve for a quiet driver is active after a long drive on the motorway then the 
accelerator pedal must be pressed down unusually hard to obtain a higher acceleration level. 

Kickdown switch (S16/6)  

The kickdown switch was no longer used from 9/01. Recognition of full load is now achieved over the signal 
from the pedal value sensor. The pressure point on the accelerator pedal before achieving the full load position 
remains. 

 

Motor electronics control unit, location/task/ 
design/function

except M111 EVO

GF07.61-P-
5000F
 

M111 EVO

GF07.61-P-
5000GS

 

Electronic accelerator/cruise control/idle speed 
control actuator location/task/design/function

except M111 EVO

GF30.22-P-
4010F

 

Throttle valve actuator, location/task/design/ 
function

M111 EVO

GF30.22-P-
4101GS

 

Pedal value sensor, location/task/design/ 
function

 

GF30.20-P-
4011L

  ME-SFI idle speed control function

Except engine 120 and engine 111 EVO

GF30.22-P-
0003E

M111 EVO

GF30.22-P-
0003GS

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY CAB Throttle Control, Speed Control Systems - 163 Chassis

  

me 

 

PEDAL VALUE SENSOR POSITION - GF30.20-P-4011-01GH 

 

Electronic power control indicator lamp, 
location/task/design/function

Engine 119, 120 in Model 129, 140 up to 
5/96

GF30.20-P-
4012L

 

Electronic accelerator pedal emergency running 
mode function

Engine 104, 111, 112, 113, 119, 137

GF30.20-P-
4026E

  30 km/h limit, function

Model 129, 140 with Engine 104, 
119.98, 120.98 
except    

GF30.20-P-
4027F

  Cruise control (CC) function

With cruise control

GF30.30-P-
0001F

Engine 104 (except HFM sequential 
multiport fuel injection/ignition system), 
119.98, 120.98

 

With cruise control 
Engine 111, 112, 113, 137

GF30.30-P-
0001FA

  Variable speed limiter, function

Additional cruise control function except 

 

 

GF30.30-P-
3001A

  Distronic (DTR), function

Model 220, 215 with code 219a up to 
6/00

GF30.30-P-
0002K

Model 203, 209, 211, 230 with code 
219a

GF30.30-P-
0002KA

Model 215, 220 with code 219a as of 
7/00

 

Pedal value sensor characteristic curve when 
reversing function

 

GF30.20-P-
4013E

  ASR V control unit location/task/design/function

with code 471 a 
Model 129, 140, 202 as of 6/94, 170, 
208, 210

GF42.40-P-
4500A

  ESP control unit location/task/function

with code 472a 
Model 129 with Engine 104, 119, 120 
Model 140 
Model 210 with engine 119

GF42.45-P-
4500A

with code 472a 
Model 129 with engine 112, 113 
Model 163 up to 8/02, 168, 215 
Model 220 (except 220.08/18) Model 
202, 208 with engine 112, 113 
Model 210 with engine 111, 112, 113

GF42.45-P-
4500B
 

with code 472a 
Model 170 with Engine 111, 112 
Model 202, 208 with Engine 111 
Model 203

GF42.45-P-
4500C

Model 211, 230

GF42.45-P-
4500SL

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY CAB Throttle Control, Speed Control Systems - 163 Chassis

  

me 

 

Model 163  

in left of component compartment 

Fig. 2: Locating Pedal Value Sensor (Hall Principle) 

PEDAL VALUE SENSOR DESIGN - GF30.20-P-4011-02B 

with two Hall elements  

Fig. 3: Identifying Pedal Value Sensor (With Hall Principle) 

Illustration shows internal circuitry of pedal value sensor B37 (with Hall principle)  

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY CAB Throttle Control, Speed Control Systems - 163 Chassis

  

me 

 

Fig. 4: Identifying Internal Circuitry Of Pedal Value Sensor

The pedal value sensor based on the Hall principle consists of two Hall elements, 2 magnets, electronics and a 
restoring spring. The magnets are moved by means of the linkage or cable attached to the pedal value sensor 
and thus alter the direction of the magnetic field relative to the fixed Hall elements. This produces a change in 
the voltage. 

The pedal value sensor is supplied with 5V only at pin 1. Pin 2 is not connected internally. The information 
regarding the accelerator pedal position is passed to the engine control module by means of two voltages (pin 4: 
approx. 0 to 2.25V and pin 5: approx. 0 to 4.5V). The pedal value sensor with potentiometer can be replaced 
with the pedal value sensor based on the Hall principle (but not vice versa). 

PEDAL VALUE SENSOR DESIGN - GF30.20-P-4011-02C 

Fig. 5: Identifying Accelerator Pedal Module With Kickdown Switch (Up To 7/02) Components 

Illustration shows accelerator pedal module with kickdown switch (S16/6).  

Was only installed until about 7/02. One then used the accelerator pedal module with kick-down simulator (a).

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY CAB Throttle Control, Speed Control Systems - 163 Chassis

  

me 

 

 

 

 

 

 

 

 

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