| In vehicles with three-wire sender, 5 contacts are connected in the electrical connector for fuel gauge sender -G-. |
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| Connect multimeter (resistance test) between contacts -2- and -3-. |
| Fuel gauge sender -G- installed: |
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| Sender at lower stop: approx. 270 Ω. |
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| Sender at upper stop: approx. 70 Ω. |
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| To test the maximum and minimum resistance values for „tank full“ and „tank empty“, remove the fuel delivery unit → Chapter and move the sender float all the way to its top or bottom position. |
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| If the resistance is 0 Ω, there is a short circuit. If the resistance is ∞ Ω, there is an open circuit in the wiring. |
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| The following values are obtained with the fuel gauge sender -G- removed, due to the greater travel of the float arm: |
| Fuel gauge sender -G- removed: |
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| Sender at lower stop: approx. 290 Ω. |
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| Sender at upper stop: approx. 60 Ω. |
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| Connect multimeter (resistance test) between contacts -3- and -4-. |
| Fuel gauge sender -G- installed or removed: |
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| Sender in any position: approx. 340 Ω. |
| Assembly is carried out in the reverse order; note the following: |
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