A8 Sedan V8-3.7L (AEW) (1997)
Refer "Monitors, Trips and/or Drive Cycle (Readiness Code)/Checking, Readiness Code" See: Computers and Control Systems/Testing and Inspection
Refer "Monitors, Trips and/or Drive Cycle (Readiness Code)/Generating, Readiness Code" See: Computers and Control Systems/Testing and Inspection
If one of the specified values was not obtained:
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Connect VAG1598/19 test box to Engine Control Module (ECM) harness connector Refer "Scan Tool Testing/Scan Tool Connecting and Initial
Checks/VAG1598/19 Test Box, Connecting" See: Computers and Control Systems/Testing and Inspection
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Check wiring for open circuit, short circuit to B+ or short to Ground between CMP sensor and ECM.
CMP sensor
VAG1598/19 socket (ECM terminal)
connector terminal
1
A3 (+5 volts)
2
B2 (signal)
3
D12(Ground)
If, after erasing Diagnostic Trouble Code (DTC) memory, CMP sensor malfunctions are still stored, and all test results to this point have been OK:
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Remove CMP sensor.
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Make sure that trigger wheel is correctly installed.
(Can be damaged if mounting bolts are incorrectly torqued).