A8 Quattro Sedan V8-4.2L (BGK) (2006)
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Connect test box (VAG1598/31) at wiring harness to Engine Control Module (ECM), do not connect ECM.
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Check wire connection from Camshaft Position (CMP) Sensor.
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.... to Engine Control Module (ECM) for wiring open circuit as well as short circuit to B+ and to Ground (GND).
CMP Sensor, Bank 1
CMP Sensor, Bank 2
Wire resistance: max. 1.5 ohms
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Repair open circuit in wiring or short circuit if necessary.
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If, after erasing DTC memory for the sake of the test, a DTC relating to the Camshaft Position (CMP) sensor (hall sensor) is indicated again, even
though all previous tests were OK, the following malfunction is possible:
‹› If specified values are not reached, unscrew Camshaft Position (CMP) sensor and check whether shutter wheel is mounted properly at camshaft (if
mounted improperly, locking lug will be pressed flat when mounting bolt is tightened).
‹› Check engine timing.
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Read readiness code => [ Readiness Code, Reading ] See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Monitors, Trips, Drive Cycles and Readiness Codes. If DTC memory was erased, readiness code must be generated again => [
Readiness Code, Generating ] See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes.
