Beetle L4-1.9L DSL Turbo (ALH) (1998)
Manifold Absolute Pressure Sensor: Testing and Inspection
With Manufacturer's Scan Tool
Manifold Absolute Pressure (MAP) Sensor -G71- and Barometric Pressure (Baro) Sensor -F96-, Checking
The BARO -F96- sensor is located in the Engine Control Module - Direct Injection System. The intake manifold pressure sensor is a separate component
and is located in the pipe between the charge air cooler and intake manifold.
Special tools
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VAG 1551/1552 Scan Tool using VAG 1551/3 Adapter cable
Test sequence
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Connect VAG 1551/1552 Scan Tool.
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Switch ON ignition but do not start engine.
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Press 0 and 1 buttons to select Address word 01: "Engine electronics"
Display will appear as shown (example only)
038906018M 1.9l R4 EDC 00AG 1813
Coding 0001
WSC XXXXX
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Press -> button.
Display will appear as shown
Rapid data transfer
HELP
Select function XX
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Press 0 and 8 buttons to select Function 08: "Read measuring value block".
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Press Q button to enter input.
Display will appear as shown
Read measuring value block
HELP
Input Display group number XXX
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Press 0,1 and 0 buttons to select "Display group 10".
0 mg/H 1027 mbar 1013 mbar 0.0%
Compare Display zone 2 (Barometric Pressure (BARO) Sensor -F96-) with Display zone 3 (Manifold Absolute Pressure (MAP) Sensor -G71-).
Read measuring value block 10
->
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Specification: pressures must be the same (+ 30 mbar)
If value in Display zone 2 deviates
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Replace Engine Control Module J248
If value in Display zone 3 deviates
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Press -> button.
Display will appear as shown
Rapid data transfer
HELP
Select function XX
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Press 0 and 6 buttons to select Function 06: "End output".
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Press Q button to enter input.
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Switch OFF ignition.