A8 Quattro Sedan V8-4.2L (AUX) (2001)
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Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to the engine control module itself. Refer to "Scan
Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG1598/31 Test Box" See: Computers and Control Systems/Testing and
Inspection
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Check for open circuit and short to B+ or Ground (GND) in the following wiring connections:
Connector for
VAG1598/31 test box,
MAF sensor -G70, socket
3
27
4
53
5 (signal wire)
29
Resistance in wiring: max. 1.5 Ohms
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Repair short circuit or open circuit if necessary.
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Also check for short circuits between all wires.
Connector for
VAG1598/31 test box
MAF sensor -G70, socket
3
53 and 29
4
27 and 29
5 (signal wire)
27 and 53
Specification: infinity Ohms (open circuit)
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If wiring and voltage supply are OK, replace Mass Air Flow (MAF) sensor -G70.
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Display readiness code. The readiness code must be regenerated if the DTC memory was erased.
Refer to "Monitors, Trips and/or Drive Cycle (Readiness Codes)/Readiness Code" See: Computers and Control Systems/Testing and Inspection
Refer to "Monitors, Trips and/or Drive Cycle (Readiness Codes)/Generating Readiness Code" See: Computers and Control Systems/Testing and
Inspection