Engine Management
38
CAN Data Bus Interfaces (Powertrain CAN Data Bus) in the Audi Q7
The messages listed here are transmitted from the control modules to the powertrain CAN data bus. However, only a few
of the important messages are listed. In reality, there are many more. Of course, these messages are subject to change
due to software updates.
Steering Angle Sensor G85
Steering wheel angle (utilized
for idling pre-control and engine
torque calculation based on the
power demand of the power
steering system)
Torque request at full steering
lock
ABS Control Module J104
TCS request
EBC request
ABS request
EDL intervention
ESP intervention
ESP brake light switch
Active brake servo
Road speed signal
TCS intervention torque
EBC intervention torque
Lateral acceleration
Wheel speed
Brake pressure status
Engine Control Module J623
Transmits:
Idle information (EBC)
Kick-down information
Engine speed
Engine torque
Accelerator pedal angle
Mechanical engine torque loss
Gearbox code
Engine configuration
Coolant temperature
Brake light switch information
Brake pedal switch
CCS switch positions
CCS set speed
SET/ACTUAL idle speed
Throttle-valve angle
Intake air temperature
Drive-by-wire throttle lamp
OBD2 lamp
“Hot” warning lamp
Power reduction or A/C compressor
load shedding
Fuel consumption
Radiator fan activation
Oil temperature
Fault memory entry
Activation of electrical brake servo
pump
Transmission Control Module J217
Transmits:
Selector active/inactive
A/C compressor “OFF”
Torque converter clutch status
Target gear
Selector lever position
NOMINAL engine torque
Motion resistance index
Limp-home programs
Cooling request
OBD status (MIL lamp activation)
Idle input torque
Rev-up flag
Nominal idling speed
Creep adaptation mode request
Hazard warning light system “on”
Gear shift active
Data Bus Diagnostic Interface J533
Trailer operation
Rear light
Brake light
Trailer brake light
All relevant ACC messages
from J428
All relevant CCS messages
from J523
Alternator load torque
Climatronic Control Module J255:
Request
RPM increase
Torque increase
Instrument Cluster Control
Module J285:
Fuel tank information
Ambient temperature
Standing time
Mileage
Information from Oil Level
Sensor G266
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Level Control System Control
Module J197
V-limit
In case of falsely set code 50 mph
CAN High
CAN Low
Summary of Contents for 4.2-liter V8 FSI
Page 1: ...Self Study Program 921603 Audi 4 2 liter V8 FSI Engine Service Training...
Page 4: ...ii...
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