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Evaluating measured value blocks, display groups 70...75 -Exhaust gas recirculation-
Evaluating measured value blocks, display groups 70...75 -Exhaust gas recirculation-
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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 80.0 °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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xx.x %
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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 activated charcoal filter diagnosis
(Test OFF / test ON / TVV OK / TVV n.OK)
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TVV OK
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Lambda regulator deviation during TVV diagnosis
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-10.0...10.0 %
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Tank venting valve -N80 for activated charcoal filter system duty cycle
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0.0...99.0 %
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Note:
TVV means tank venting valve. 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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