Hand multimeter -V.A.G 1526C- or multimeter -V.A.G 1715-
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Auxiliary measuring set -V.A.G 1594C-
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Current flow diagram
Test prerequisite
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Fuses 23 and 27 OK.
Test procedure
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Pull 3-pin connector off Hall sender -G40- → Chapter.
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Connect hand multimeter -V.A.G 1526C- using aux. cables from auxiliary measuring set -V.A.G 1594C- to measure voltage at contacts 1 (positive) and 3 (earth) of Hall sender -G40-.
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Switch on ignition. Specification: Battery voltage
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Switch off ignition.
If no voltage is present:
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Connect adapter cable, 121-pin -V.A.G 1598/31- to control unit wiring harness.
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Check wiring between adapter cable, 121-pin -V.A.G 1598/31- and 3-pin connector for open circuit referring to current flow diagram.
Contact 1 + socket 1/2
Contact 2 + socket 109
Contact 3 + socket 101
Wire resistance: max. 1.5 Ω.
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Also check wiring for short to one another, short to vehicle earth and short to battery positive.
Specification: ∞ Ω.
If no wiring fault is detected and voltage was present between contacts 1 + 3: