New Beetle L4-2.0L (AVH) (2005)
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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, BEV, BGD
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Disconnect 5-pin connector from Mass Air Flow (MAF) sensor -G70- with Intake Air Temperature (IAT) sensor -G42- (arrow).
Continued for all vehicles
If indication jumps to approx -40 degrees C 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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Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. See: Powertrain Management/Computers
and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/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/Test Box, Connecting For Wiring Test
Vehicles with engine code AEG