New Beetle L4-2.0L (AZG) (2003)
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Disconnect 5-pin connector off Mass Air Flow (MAF) sensor (G70) and intake air temperature sensor (G42) -arrow-.
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Bridge connector terminals 1+3 using auxiliary cables from V.A.G 1594 and observe display.
If display jumps to approx. 140 °C:
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Press -> button.
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Press buttons 0 and 6 for function "End output" and confirm entry with Q button.
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Switch ignition off.
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Replace intake air temperature sensor (G42)
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Check DTC memory, if necessary, repair any malfunctions and then erase DTC memory. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes
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Read readiness code. If DTC memory has been erased or engine control module was disconnected from permanent positive, readiness code must
be generated again.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If display remains at approx. -40° C:
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Press -> button.
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Press buttons 0 and 6 for function "End output" and confirm entry with Q button.
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Switch ignition off.
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Check wiring using wiring diagram
Continuation of check when display approx. 140° C: