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| Check wiring for open circuit between test box and connector according to current flow diagram. Contact 9+ socket 79 Contact 10+ socket 2 Contact 10+ socket 28 Wire resistance: max. 1.5 Ω |
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| Additionally check wires for short to one another, to vehicle earth and to battery positive. Specification: ∞Ω |
If no wiring fault is detected: |
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