New Beetle L4-2.0L (AZG) (2003)
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Only engine code AEG
Engine code AVH, AZG
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Remove fuse 32 from fuse panel.
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Pull connectors off outer injectors.
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Remove spark plug connectors using T10029 tool and place spark plug wires aside.
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Remove spark plugs using 3122 B tool.
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Have a second technician operate starter.
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Vehicles with engine code AEG: fully depress accelerator pedal using a second technician.
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Check compression using VAG1763 tester.
Note: Compression tester operation instructions Tester Operators Manual
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Crank starter until tester shows no further increase in pressure.
Compression pressure:
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New: 10 to 13 bar (145 to 189 psi)
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Wear limit: 7.5 bar (109 psi)
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Maximum permissible difference between all cylinders:
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3 bar (43.5 psi)
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Finally, erase engine control module DTC memory because pulling off injector connectors will have caused a DTC to be recorded.
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Check Diagnostic Trouble Code memory, Refer to Powertrain Management
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Check Readiness code.
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Reset Readiness code after DTC's are corrected, Engine Control Module (ECM) is subject to low voltage with ignition on, or ECM is replaced.
