Audi Q7: Accelerator Pedal Module - GX2-, Checking
General Description
The Accelerator Pedal Position Sensor -G79- and Accelerator
Pedal Position Sensor 2 -G185- are combined in one component and
integrated into the Accelerator Pedal Module - GX2-. They are
used to detect the position of the accelerator pedal throughout
the entire adjustment range. The Engine Control Module - J623-
detects the driver's request from these signals and uses them to
calculate the injection quantity and EPC throttle valve
operation.
The Accelerator Pedal Module - GX2- contains the following
components:
- Accelerator Pedal Position Sensor -G79-
- Accelerator Pedal Position Sensor 2 -G185-
The Accelerator Pedal Module - GX2- components cannot be
serviced separately, and they must be serviced as a unit.
Special tools and workshop equipment
required
- Multimeter.
- Wiring Diagram.
- Scan Tool.
Test requirements
- Fuses OK.
- Battery voltage OK.
- Switch OFF all electrical and electronic accessories.
- Vehicles with automatic transmission, ensure the selector
lever position is in "P".
- Vehicles with manual transmission, ensure the shifter lever
position is in "N" with the parking brake applied.
- Coolant temperature: ≥ 80º C.
- Observe all safety precautions:
→ Chapter "Safety Precautions".
- View clean working conditions:
→ Chapter "Clean Working Conditions".
- For Hybrid vehicles, refer to:
→ Chapter "High Voltage System General Warnings".
Test Procedure


READ NEXT:
General Description
The camshaft's task is to operate the valves at the right
time and in the right order to control the charge cycle.
Camshaft adjustment using the Camshaft Adjustment Valve 1 -N205
General Description
Using the signal from the Camshaft Position Sensor -G40-,
the precise position of the camshaft relative to the crankshaft
is determined very quickly when the engine is started. U
General Description
The Engine Control Module -J623- communicates with other
CAN-Bus capable control modules.
The control modules are connected by two data bus wires
which are twisted together (CAN_
SEE MORE:
Activating and deactivating
Applies to: vehicles with parking aid plus
Fig. 125 Center console: parking aid button
General information
The parking aid assists when parking and maneuvering by providing warnings
about obstacles. If the ultrasonic sensors on the vehicle, fig. 96 detect an obstacle,
Description
Applies to: vehicles with Start/Stop system
The Start/Stop system can help increase fuel
economy and reduce CO2 emissions.
In Start/Stop mode, the engine shuts off automatically
when stopped, for example at a traffic
light. If certain conditions are met, the engine
may stop before the