Beetle L4-1781cc 1.8L Turbo (APH) (1999)
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Measure resistance between the contacts 1 + 2 at the connections to knock sensors.
Specification: Infinity Ohms
If the specification is not obtained:
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Replace the knock sensor/s (G61 or G66), item 12 or item 17.
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Check DTC memory, if necessary, repair any malfunctions and then erase DTC memory, checking and erasing DTC memory. Refer to
"Displaying, Reading and Erasing Trouble Codes/With Manufacturers Scan Tool/DTC Memory, Checking And Erasing", See: Testing and
Inspection
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Read-out the readiness code. If the DTC memory has been erased or the engine control module was disconnected from permanent positive, the
readiness code must be generated again.
Refer to "Monitors Trips and/or Drive Cycle/Displaying Readiness Code", See: Testing and Inspection
Refer to "Monitors Trips and/or Drive Cycle/Generating Readiness Code", See: Testing and Inspection
If the specification is obtained:
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Check wiring.
Checking wiring
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Remove inner plenum chamber cover, left:
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Connect test box V.A.G 1598/31 to control module wiring harness. The engine control module is not connected by this action.