Jetta Wagon L4-1.9L DSL Turbo (ALH) (2003)
Terminal 3 + socket 112
Terminal 4 + socket 104
Wire resistance: max. 1.5 Ohm
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Check wires for short to one another, to vehicle Ground and to battery positive (B+).
Specification: Infinite Ohm
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If wiring and the resistance measurement values are OK, replace Diesel Direct Fuel Injection Engine Control Module -J248-.