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Evaluating measured value blocks, display groups 50...69 -Speed regulation-
Evaluating measured value blocks, display groups 50...69 -Speed regulation-
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Display group 50 -Speed regulation- Operating condition
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▪ Engine running at idling speed
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Read measured value block 50
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⇒
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◂ Indicated on display
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xxxx rpm
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xxxx rpm
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Text
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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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Air conditioner compressor operating mode
(Compr. ON / Compr. OFF)
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Compr. ON or
Compr. OFF
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---
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Air conditioner operating mode
(on / off)
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ON or OFF
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---
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Engine speed (idling speed specification)
▪ Air conditioner compressor OFF
▪ Air conditioner compressor ON
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830 rpm
900 rpm
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---
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Engine speed (idling speed)
▪ Air conditioner compressor OFF
▪ Air conditioner compressor ON
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800...900 rpm
850...930 rpm
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Note on display zone 2:
The specified engine speed from the engine control unit is displayed (temperature dependent internally calculated control unit value).
Notes on display zone 4:
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◆ "Compr. OFF" is always displayed on vehicles without air conditioner.
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◆ Checking signal from and to air conditioner compressor
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Display group 54 -Speed regulation-
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▪ Whilst driving
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Read measured value block 54
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⇒
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◂ Indicated on display
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xxxx rpm
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Text
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xxx %
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xxx.x %
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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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Throttle valve angle sender 1 for
throttle valve drive (G187)
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0.0...100.0 %
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---
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Accelerator pedal position sender (G79)
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0...100%
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---
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Operating mode:
(Idling, part throttle, enrichment, overrun, full throttle)
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---
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---
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Engine speed
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800..6500 rpm
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---
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Display group 55 -Speed regulation- Idling stabilisation
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▪ Engine running at idling speed
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Read measured value block 55
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⇒
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◂ Indicated on display
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xxxx rpm
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xx %
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xx.x %
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xxxxx
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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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Operating mode
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xxxxx
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=> Page 01-133
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Idling speed stabilisation learnt value
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-10.0...10.0 %
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---
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Idling speed regulator
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-10...20 %
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---
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Engine speed (idling speed)
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800...900 rpm
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=> Page 01-86
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Note on display zone 3:
Displayed is the amount that the idling speed stabilisation has moved away from the prescribed average. For a new engine the values lie in the positive range, because of the higher friction and in the negative range with an engine that has run-in.
Significance of figures in 5-digit number block, display zone 4 - operating modes
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Significance if display = 1
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1
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2
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3
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4
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5
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Significance
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1
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Air conditioner compressor switched on
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x
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Not relevant
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1
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Air conditioning system switched on
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x
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Not relevant
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x
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Not relevant
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Display group 56 -Speed regulation- Idling speed stabilisation
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▪ Engine running at idling speed
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Read measured value block 56
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⇒
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◂ Indicated on display
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xxxx rpm
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xxxx rpm
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xx %
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xxxxx
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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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Operating mode
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xxxxx
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=> Page 01-133
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Idling regulator
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-10...20 %
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---
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Engine speed (idling speed specification)
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830 rpm
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---
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Engine speed (idling speed)
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800...900 rpm
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=> Page 01-86
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Note on display zone 2:
The specified engine speed from the engine control unit is displayed (temperature dependent internally calculated control unit value).
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Display group 57 -Speed regulation- Idling speed stabilisation
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▪ Engine running at idling speed
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Read measured value block 57
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⇒
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◂ Indicated on display
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xxxx rpm
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xxxx rpm
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Text
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xx %
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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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Air conditioner readiness
▪ Air conditioner off
▪ Air conditioner on
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0...2 %
15...80 %
(fluctuating)
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---
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Air conditioner compressor operating mode
(Compr. ON / Compr. OFF)
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Compr. ON or
Compr. OFF
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---
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Engine speed (idling speed specification)
▪ Air conditioner compressor OFF
▪ Air conditioner compressor ON
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830 rpm
900 rpm
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---
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Engine speed (idling speed)
▪ Air conditioner compressor OFF
▪ Air conditioner compressor ON
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800...900 rpm
850...930 rpm
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=> Page 01-86
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Note on display zone 2:
The specified engine speed from the engine control unit is displayed (temperature dependent internally calculated control unit value).
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Display group 60 -Speed regulation- Adaption EPC system 1)
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▪ Ignition on, engine not running
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▪ Control unit in mode 04 basic setting
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Read measured value block 60
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⇒
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◂ Indicated on display
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xxx.x %
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xxx.x %
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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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Adaption condition
(ADP runs / ADP OK / ADP ERROR)
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ADP OK
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---
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Learning step counter
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0...8
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---
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Throttle valve angle sender 2
for throttle valve drive (G188)
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100.0...0.0 %
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---
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Throttle valve angle sender 1
for throttle valve drive (G187)
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0.0...100.0 %
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---
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1)
Erase learnt values and adapt engine control unit to throttle valve control part => Page 24-128
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Note on display group 60:
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◆ Matching the throttle valve control part is performed with ignition switched on.
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◆ Engine control unit is adapted to throttle valve control unit when selecting display group 60 under function 04 "Basic setting". This adaption must always be carried out when another throttle valve control part (or another complete engine) or another engine control unit is fitted.
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◆ The specifications indicated in display zones 1 and 2 do not fully reach the max. min. figures.
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◆ During adaption the counter in display zone 3 counts up from 0 to 8.
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Display group 61 -Speed regulation- Electronic accelerator system
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▪ Whilst driving
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Read measured value block 61
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⇒
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◂ Indicated on display
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xxxx rpm
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xx.x V
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xxx.x %
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xxxxx
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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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Operating mode
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xxxxx
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=> Page 01-133
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Throttle valve angle sender 1
for throttle valve drive (G187)
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0.0...100.0 %
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---
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Voltage supply for engine control unit
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11.5...15.0 V
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=> Page 01-92
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Engine speed
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800..6500 rpm
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---
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Display group 62 -Speed regulation- Electronic accelerator system
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▪ Ignition on, engine not running
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Read measured value block 62
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⇒
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◂ Indicated on display
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xxx.x %
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xxx.x %
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xxx.x %
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xxx.x %
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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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Accelerator pedal position sender 2 (G185)
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0.0...49.0 %
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---
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Accelerator pedal position sender (G79)
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0.0..98.0 %
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---
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Throttle valve angle sender 2
for throttle valve drive (G188)
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100.0...00.0 %
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---
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Throttle valve angle sender 1
for throttle valve drive (G187)
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0.0...100.0 %
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---
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Notes on display group 62:
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◆ The throttle valve control part potentiometer and the pedal value sender are installed in pairs for reasons of safety. The engine control unit continually checks the plausibility of the potentiometer.
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◆ The value displayed by the accelerator pedal position sender 2 (G185) must always be approx. half the value displayed by the accelerator pedal position sender (G79).
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◆ The throttle valve control part angle senders counter oppose one another. The values of both senders added together always equal approx. 100 %.
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◆ The specifications do not fully reach the max. min. figures.
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Display group 66 -Idling regulation- Additional signals
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▪ Ignition on, engine not running
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Read measured value block 66
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⇒
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◂ Indicated on display
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xxx km/h
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xxxx
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xxx km/h
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xxxx
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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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Display not relevant
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Not relevant
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---
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Display not relevant
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Not relevant
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---
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Switch status from:
▪ Clutch pedal switch (F36)
▪ Brake light switch (F) and brake pedal switch(F47)
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x000
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=> Page 01-141
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Road speed (actual)
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0 km/h
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Notes on display zone 2:
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◆ Checking signal from clutch pedal switch => Page 24-149
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◆ Checking signal from brake light switch and brake pedal switch => Page 24-153
Significance of the figures in the 4 digit display, display zone 2 - switch positions
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Significance if display = 1
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1
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2
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3
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4
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Significance
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1
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Brake depressed (brake light switch -F)
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1
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Brake depressed (brake pedal switch -F47)
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1
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Clutch depressed (clutch pedal switch -F36)
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x
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Not relevant
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