A8 Quattro Sedan V8-4.2L (BGK) (2006)
Downshift Switch: Testing and Inspection
Kick Down Switch, Checking
Special tools, testers and auxiliary items required
‹› Engine/transmission hoist (VAG1526A)
‹› Engine/transmission hoist (VAG1594A)
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Pry off covers using a screwdriver.
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Remove bolts (- arrows -) and remove cover for kick down switch.
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Disconnect electrical harness connector.
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Connect multimeter at kick down switch for resistance measurement.
Specified value: infinite ohms (no continuity)
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Move accelerator pedal slowly in direction of Wide Open Throttle (WOT).
Shortly after kickdown point, resistance must drop to 0 ohms
If indications do not resemble description:
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Replace kick down switch.
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Erase DTC memory of Engine Control Module (ECM) => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Powertrain Management/Computers
and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09, Diagnostic mode 4: Reset/erase
diagnostic data.
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Generate readiness code => [ Readiness Code, Generating ] See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Monitors, Trips, Drive Cycles and Readiness Codes.