Jetta GL Wagon L4-1.9L DSL Turbo (ALH) (2002)
If the specification is not obtained:
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Check exhaust gas recirculation:
If the specification is obtained:
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Road test vehicle with a 2nd technician to observe display.
Observe valid safety precautions when road testing.
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Accelerate vehicle in 3rd gear (vehicles with manual transmission) or 2nd gear (vehicles with automatic transmission) from about 1500 rpm using
wide open throttle.
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Press PRINT button on VAG 1551 at approx. 3000 rpm. The accelerator pedal must be fully depressed at this moment in time.
Read measured value block 10
->
830 mg/H
1027 mbar
1850 mbar
100 %
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Specification in display field 4: 100% (accelerator pedal position/throttle)
If the specification is not obtained:
-
Repeat test and accelerate vehicle at wide open throttle.
Read measured value block 10
->
830 mg/H
1027 mbar
1850 mbar
100 %
-
Specification in display field 1: above 800 mg/H (mass air flow drawn in).
If the specification is not obtained:
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Press the -> button.
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Press buttons -0- and -6- to select "End output" function 06 and confirm entry with the -Q- button.
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Switch off ignition.
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Replace MAF sensor.
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Check DTC memory and, if necessary, repair any malfunctions and then erase. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes/With Manufacturer's Scan Tool
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Read readiness code. If the DTC memory has been erased or the Diesel Direct Fuel Injection Engine Control Module -J248- was disconnected
from permanent battery positive (B+), the readiness code must be generated again.
See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If a constant 550 mg/H (predetermined replacement value) is displayed in display field 1.
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Press the -> button.
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Press buttons -0- and -6- for the function "End output" and confirm entry with the -Q- button.
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Switch off ignition.
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Pull 5-pin connector off MAF sensor -arrow-.
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Switch on ignition.