Jetta L4-1.9L DSL Turbo (BEW) (2004)
Engine Control Module: Component Tests and General Diagnostics
Components, Checking
Components, checking
Special tools, testers and auxiliary items required
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Vehicle Diagnosis, Testing and Information System VAS 5051
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Diagnosis cable VAS 5051/1 or VAS 5051/3
Work sequence
Select "Guided fault finding" on diagnosis tester VAS5051 After all control modules have been read:
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Press key "Go to".
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Select "Function/component selection"
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"Select drive train."
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Select "Engine code".
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Select "01 -Systems capable of self-diagnosis".
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Select "Engine management".
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Select "Functions".
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Select "Function or component".
Engine Control Module (ECM) Voltage Supply, Checking
Voltage supply for Diesel-Direct Fuel Injection System, checking
Recommended special tools and equipment
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VAG1526 multimeter or VAG1715 multimeter
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VAG1594 connector test kit
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Wiring diagram
Test requirements
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The respective fuses of Diesel-Direct fuel injection system must be OK:
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Generator (GEN) OK.
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Battery voltage must be at least 11.5 Volts.
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All electrical consumers such as, for example, lights and rear window defroster must be switched off.
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For vehicles with automatic transmission, selector lever must be in position -P- or -N-.
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If vehicle is equipped with an A/C system, it must be switched off.
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Ground (GND) connections between engine and chassis must be OK.