SL 600 (129.076) V12-6.0L (120.981) (1995)
Before starting the engine, the throttle valve position is determined by the engine temperature. Once the engine is running, the idle speed and
ABS/ASR III are controlled by the electronic accelerator control module which provides a constant idle RPM and limits the maximum torque
output to the drive wheels. For torque output regulation (ABS/ASR III), the control module uses the input signal from the ABS/ASR control
module.
The electronic accelerator control module uses the following information to determine the throttle position:
Input Signals
^
Base module (N16/1)
^
ABS/ASR control module (N30/1)
^
LH control modules (N3/2 and N3/3)
^
EZL/AKR ignition control modules (N1/4 and N1/5)
^
Idle speed contact switch (S29/3)
^
Electronic accelerator actuators (M16/3 or M16/4)
^
Stop lamp switch (S9/1)
^
Starter lockout/backup lamp switch, selector lever position recognition (S16/3)
^
Cruise control switch (S40)
^
A/C compressor engagement signal
^
Data exchange via controller area network (CAN)
^
Wheel speed sensors (L6/1 - L6/4)
Output signals
^
Electronic accelerator actuator (M16/3 and M16/4)
^
ABS/ASR control module (N30/1)
^
LH control modules (N3/2 and N3/3)
^
EZL/AKR ignition control modules (N1/4 and N1/5)
^
Impulse readout (malfunction memory) via 38-pole diagnostic socket (X11/4)
^
Data exchange via controller area network (CAN)
Idle speed control function
The idle speed control function uses the following information to determine the correct idle speed:
^
Engine speed (TN-signal)
^
Coolant temperature
^
Vehicle speed signal
^
Selector lever position
^
Diode matrix signal
Idle Speed/Temperature Chart
During idle, the control module keeps the engine speed at a constant RPM depending on engine coolant temperature.