New Beetle L4-2.0L (AZG) (2003)
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Check wiring between the test box and connector for open circuit, short circuit to Ground or positive using current wiring diagram:
Injector 1: terminal 2+socket 96
Injector 2: terminal 2+socket 89
Injector 3: terminal 2+socket 97
Injector 4: terminal 2+socket 88
Wire resistance: max. 1.5 Ohms
If there is no malfunction in the wiring:
Checking resistance of injectors
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Check resistance of injector between terminals.
Specification: 14 to 18 Ohms
NOTE: The resistance figures are valid for approx. 20 °C. At higher temperatures the resistance figures will increase.
If the specification is not attained:
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Replace faulty injector.
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Erase DTC memory to put learned values in a neutral setting. See: Computers and Control Systems/Testing and Inspection/Reading and Clearing
Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes
If the resistance values are OK and no wiring fault has been detected:
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Replace Engine Control Module (ECM).
With Generic Scan Tool
Fuel Injectors, Checking
Recommended special tools and equipment