Beetle L4-2.0L (AEG) (2000)
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Disconnect 5-pin connector from Mass Air Flow (MAF) Sensor -G70- with Intake Air Temperature (IAT) Sensor -G42- (arrow).
Vehicles with engine code BDC
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Disconnect 5-pin connector from Mass Air Flow (MAF) Sensor -G70- with Intake Air Temperature (IAT) Sensor -G42- (arrow).
Continuation for all vehicles
If indication jumps to approx. -40 or -46 degrees C:
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End diagnosis and switch ignition off.
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Replace Mass Air Flow (MAF) Sensor -G70- with Intake Air Temperature (IAT) Sensor -G42-:
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Vehicles with engine code AEG, AVH, AZG, item 3,
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Vehicles with engine code BDC, item 1.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
and Readiness Codes
If indication remains at approx.. 140 degrees C:
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End diagnosis and switch ignition off.
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Check wires according to wiring diagram.
Checking wiring
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Connect test box to control module wiring harness, connect test box for wiring test. Engine Control Module (ECM) is not connected. See:
Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool
Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring Test
Vehicles with engine code AEG