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‒ → Check wiring for open circuit between test box and 4-pin connector using current flow diagram.
Contact 3 + socket 108 Contact 4 + socket 93 Wire resistance: Max. 1.5 ω
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‒ Check wiring additionally for short circuit to battery positive.
Specification: ∞ω
If no fault is detected in the wiring:
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‒ Replace coolant temperature sender (G62) with coolant temperature gauge sender (G2) , item 16.
Continuation of check when display shows 120 °C:
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‒ Unplug 4-pin connector from coolant temperature sender (G62) with coolant temperature gauge sender (G2).
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‒ Fitting locations overview
If the display jumps to -40 °C:
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‒ Press ⇒key.
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‒ Press keys 0 and 6 for the function "End output" and confirm entry with the Q key.
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‒ Switch off ignition.
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‒ Replace coolant temperature sender (G62) with coolant temperature gauge sender (G2) , item 16.
If the display remains at 120 °C:
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‒ Press ⇒key.
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‒ Press keys 0 and 6 for the function "End output" and confirm entry with the Q key.
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