Beetle L4-1.9L DSL Turbo (ALH) (1998)
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Measure voltage supply of valve at connector terminal 1 and at engine Ground (GND).
Specified value: approx. battery voltage
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Switch ignition off.
If specified value is not obtained:
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Connect test box to control module wiring harness, connect test box for wiring test.
Vehicles with 80-pin control module
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Check for open circuits in wires between test box and connector according to wiring diagram.
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Terminal 1 + socket 2 and 28
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Terminal 2 + socket 15
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Wire resistance: max. 1.5 Ohms
Vehicles with 121-pin control module
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Check for open circuits in wires between test box and connector according to wiring diagram.
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Terminal 2 + socket 62
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Wire resistance: max. 1.5 Ohms
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Check the wire to terminal 1 according to wiring diagram.
Continuation for all vehicles
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Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinite Ohms