Short Description
The MAF sensor -G70- signal is used by the ECM to calculate the quantity injected and to control the required exhaust gas recirculation. The smaller the signal from MAF sensor -G70- the smaller the quantity of fuel injected.
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Content
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Special tools and equipment
- VAG 1551/1552 Scan tool with adapter cable VAG 1551/3
- Test box VAG 1598/31
- Hand multimeter VAG 1526 or multimeter VAG 1715
- Adapter set VAG 1594
- Wiring diagram
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Check exhaust gas recirculation:
=> Repair Manual, 1.9 Liter 4-Cyl. 2V TDI Engine Mechanical, Engine Code(s): ALH, Repair Group 26
If the specification is obtained:
- Road test vehicle with a 2nd technician to observe display.
Observe valid safety precautions when road testing => page 23-2.
- Accelerate vehicle in 3rd gear (vehicles with manual transmission) or 2nd gear (vehicles with automatic transmission) from about 1500 rpm using wide open throttle.
- Press PRINT button on VAG 1551 at approx. 3000 rpm. The accelerator pedal must be fully depressed at this moment in time.
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Get the file Download here