automatic transmission MERCEDES-BENZ ML320 1997 Complete Repair Manual

ENGINE 119.980 /981 /982 /985
ENGINE 120.982/983
ENGINE 137.970
Fig. 9: Identifying Pedal Value Sensor Function Diagram

Task
Optimizing driving comfort and safety when reversing.
Design/function
The pedal value sensor characteristic curve is changed if reverse travel is recognized by the ME control unit.
The throttle valve opens more slowly. The entire opening angle in this case is approx. 50%.
Reversing is detected:
if a manual transmission fitted, the ME control unit is connected parallel to the reversing light switch.
if an automatic transmission is fitted, the information is supplied over the CAN by the ETC control unit.
Motor electronics control unit, location/task/
design/functionother than engine 111 EVOGF07.61-P-
5000F
Engine 111 EVOGF07.61-P-
5000GS
Pedal value sensor, location/task/design/ function GF30.20-P-
4011L
Electronic accelerator/cruise control/idle speed GF30.22-P-

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY CAB Throttle Control, Speed Control Systems - 163 Chassis
me
Saturday, October 02, 2010 3:36:27 PMPage 12 © 2006 Mitchell Repair Information Company, LLC.

ELECTRONIC ACCELERATOR PEDAL EMERGENCY RUNNING MODE FUNCTION - GF30.20-P-4026E
ENGINE 104.941 /943 /944 /991 /994 as of 1/8/96
ENGINE 104.995
with CODE (494a) USA version
with CODE (807) Model year 1997
with CODE (808) Model year 1998
with CODE (498) as of Model year 97 Japanese version
ENGINE 111.921 /942 as of 1.9.98,
111.946 as of 1.6.98,
111.944/975 as of 1.8.96,
111.943 /947 /951 /952 /955 /956 /957 /958 /973 /982 /983
ENGINE 111.945
in MODEL 202.020 /080 as of 1.9.98,
208.335/435 as of 1.6.98
ENGINE 111.974
with CODE (494a) USA version
with CODE (807) Model year 1997
with CODE (808) Model year 1998
ENGINE
112.910 /911 /912 /913 /914 /916 /917 /920 /921 /922 /923 /940 /941 /942 /943 /944 /946 /947 /949 /953 /954 /9
5
control actuator location/task/design/function4010F
Throttle valve actuator, location/task/design/
functionEngine 111 EVOGF30.22-P-
4101GS
ETC control unit, location/task
Information on selector lever position
P/N and gear engaged in the case of
automatic transmission.
Transmission 722.6
GF27.19-P-
4012G

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY CAB Throttle Control, Speed Control Systems - 163 Chassis
me
Saturday, October 02, 2010 3:36:27 PMPage 13 © 2006 Mitchell Repair Information Company, LLC.

different engine loads, e.g. power steering turned to full lock, engaging drive mode, switching on AC
compressor
different mixture, e.g. from activated charcoal canister if purging activated (depending on activated
charcoal charge)
Function
The actuator EFP/TPM/LLR (additional designation: throttle valve actuator) regulates the idling speed by
changing the throttle valve position. It is actuated by the ME-SFI control unit.
The ME-SFI control unit actuates the throttle valve motor (M16/1 m1) in line with the input signals received at
the ME-SFI control unit (N3/10).
Heating speed of the catalytic converter
In order to warm up the catalytic converter more rapidly to operating temperature, engine speed is increased in
the idle speed range to 1100 up to 1500 rpm for about 20 seconds after each starting procedure at coolant
temperatures of < 40 °C. When a Drive position is engaged, engine speed is immediately controlled to a lower
value.
Automatic transmission
When a drive position is engaged, a lower engine speed is controlled in order to reduce the creeping tendency o
f
the vehicle. The information "Drive position engaged/not engaged" is transmitted by the ETC control unit
(N15/3) over the CAN databus to the ME-SFI control unit.
Ignition angle
To assist the idle speed control, the ignition angle can be retarded by as much as 36° crank angle or advanced by
as much as 20° crank angle from the calculated specified value.

The control in the idle speed range by altering the ignition angle reacts more rapidly than altering the position o
f
the throttle valve.
The idling speed can be influenced with HHT or the STAR DIAGNOSIS.
AC compressor
In order to avoid engine speed dropping in the idle speed range when the AC compressor is engaged, the AC
push-button control unit (N19) or automatic air conditioning push-button control unit (N22) supplies a signal to
the ME-SFI control unit (as of approx. 6/96 over CAN) and the opening cross-section of the throttle valve is
enlarged.
When the air conditionin
g unit is switched on and the external temperature exceeds 35° C the idling speed on

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY CAB Throttle Control, Speed Control Systems - 163 Chassis
me
Saturday, October 02, 2010 3:36:27 PMPage 17 © 2006 Mitchell Repair Information Company, LLC.

ELECTRONIC ACCELERATOR/CRUISE CONTROL/IDLE SPEED CONTROL ACTUATOR POSITION - GF30.22-P-4010-
01A
Fig. 11: Identifying Throttle Valve Actuator
ELECTRONIC ACCELERATOR/CRUISE CONTROL/IDLE SPEED CONTROL ACTUATOR DESIGN - GF30.22-P-4010-02F
Illustration shows actuator M16/4 (further designations: M16/1, M16/3, M16/6 throttle valve actuator)
ME-SFI TWC heating-up function GF07.61-P-
3032F
ETC control unit, location/task
Information on selector lever position
P/N and gear engaged in the case of
automatic transmission.
Transmission 722.6
GF27.19-P-
4012G
Clutch pedal switch, location/task/functionwith MTGF29.10-P-
2100F
SBC control unit, location/task/functionModel 211, 230: Request for increased
idle speedGF42.46-P-
4500SL

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY CAB Throttle Control, Speed Control Systems - 163 Chassis
me
Saturday, October 02, 2010 3:36:27 PMPage 19 © 2006 Mitchell Repair Information Company, LLC.

REMOVING AND INSTALLING ACCELERATOR PEDAL - AR30.12-P-1321GH
ENGINE 111.977 in MODEL 163.136
ENGINE 112.942 in MODEL 163.154
ENGINE 112.970 in MODEL 163.157
ENGINE 113.981 in MODEL 163.174
6Push control cable (32) from vehicle interior
towards the outside Do not push rubber grommet out
of splash wall.
7Remove entire control cable (32) from engine
compartment
8Install in the reverse order
9Check throttle control, adjust
Engine 112.942/970,
113.942/965/981 ?
Automatic transmissionAR30.10-P-
1010GJ
Engine 612.963: ?
Manual/automatic transmissionAR30.10-P-
1010GH
Engine 628.963: ?
Automatic transmissionAR30.10-P-
1010GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY CAB Throttle Control, Speed Control Systems - 163 Chassis
me
Saturday, October 02, 2010 3:36:28 PMPage 34 © 2006 Mitchell Repair Information Company, LLC.