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
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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_
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Removing
- Remove the B-pillar lower trim panel and bracket for the
upper B-pillar trim panel. Refer to
→ Chapter "B-Pillar Lower Trim Panel, Removing and Installing".
- Push the bracket together -arrows-
and remove the belt guide -1-
upward.
- Guide out the seat belt -2- a
The hood is released from inside the vehicle.
Fig. 162 Footwell: release level
Fig. 163 Unlocked hood: lever
Observe the safety precautions General
information.
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged.
Opening the hood
With the door