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Evaluating measured value blocks, display groups 70...89 -Reducing emissions-
Evaluating measured value blocks, display groups 70...89 -Reducing emissions-
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Display group 70 -Reducing emissions- Activated charcoal filter system diagnosis (tank breathing system)
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▪ Engine running at idling speed
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▪ Coolant temperature at least 40 °C
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▪ Control unit in mode 04-Basic settings
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Read measured value block 70
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⇒
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◂ Indicated on display
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xxx %
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xx.x %
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Text
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1
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2
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3
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4
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◂ Display zones
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Specification
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Evaluation
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Result of diagnosis (Test ON / OFF or TBV OK / n.OK)
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TBV OK
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Lambda regulation deviation in TVV diagnosis
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Activated charcoal filter system solenoid valve 1 duty cycle
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0...100 %
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Note:
TBV means fuel tank breathing valve (activated charcoal filter system solenoid valve 1). The diagnosis can only be initiated once per engine start.
Notes on display zone 2:
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◆ Lambda regulator deviation in negative range: Activated charcoal filter full
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◆ Lambda regulator deviation in positive range: Activated charcoal filter empty
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