New Beetle GLS L4-2.0L (AZG) (2002)
Fuel Injector: Testing and Inspection
Fuel Injectors, Checking
With Manufacturer's Scan Tool
Fuel Injectors, Checking
Special tools and equipment
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Scan tool VAG 1551 or vehicle system tester V.A.G 1552 with cable VAG 1551/3B
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Test box V.A.G 1598/31
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Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
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Diode test lamp V.A.G 1527
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Adapter set V.A.G 1594
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Wiring diagram
Check conditions
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All fuses must be OK
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Engine speed sensor must be OK, See: Computers and Control Systems/Engine Speed Sensor/Testing and Inspection
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Fuel pump relay must be OK
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The battery voltage must be at least 11.5 V
Test sequence
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Check activation of injectors via Output Diagnostic Test mode. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing
and Procedures/Output Diagnostic Test Mode (DTM) (Function 03)
If one or more injectors do not click:
Checking voltage supply
NOTE: To perform electrical check of No.2 and 3 cyl. injectors/wiring, the manifold upper part must be removed.
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Pull connectors off injectors.