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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 ON/OFF
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ON or OFF
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---
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Air conditioner operating mode
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ON or OFF
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---
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Engine speed (idling speed specifications):
Vehicles with engine code AUA
Vehicles with engine code AUB
Vehicles with automatic gearbox
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850 rpm (930 rpm)2)
840 rpm (870 rpm)2)
680 rpm (800 rpm)2)
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---
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Engine speed (idling speed)
Vehicles with engine code AUA
Vehicles with engine code AUB
Vehicles with automatic gearbox
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800...900 rpm1)
790...890 rpm1)
630...730 rpm1)
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1)
Up-to-date specifications:
=> Exhaust emissions test binder
2)
Air conditioning system switched on
Note on display zone 2:
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◆ The engine speed specified by the engine control unit will be displayed (calculated by control unit).
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◆ The specified engine speed is increased when battery is heavily discharged or engine has overheated.
Note on display zone 3 and 4:
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◆ "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.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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Throttle valve angle
(Potentiometer 1 -G187)
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0.0...100.0%
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---
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Accelerator pedal position sender 1 -G79
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0.0...100.0%
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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
Vehicles with engine code AUA
Vehicles with engine code AUB
Vehicles with automatic gearbox
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800...5700 rpm
790...6600 rpm
630...5700 rpm
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---
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Note on display zone 2:
The operating mode is displayed according to engine speed or load. At a higher engine speed, "overrun" is displayed when throttle valve is closed only up to 1450 rpm, and then again at idle.
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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.x Nm
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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 regulator learnt value
Air conditioner on
Air conditioner off
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-6.0...8.0 %
-3.0...8.0 %
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---
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Idling regulator
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-10...0 %
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---
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Engine speed (idling speed)
Vehicles with engine code AUA
Vehicles with engine code AUB
Vehicles with automatic gearbox
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800...900 rpm1)
790...890 rpm1)
630...730 rpm1)
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=> Page 01-90
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1)
Up-to-date specifications:
=> Exhaust emissions test binder
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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1
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Driving range (gear) selected
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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.xx Nm
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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...0 Nm
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---
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Engine speed (idling speed specifications):
Vehicles with engine code AUA
Vehicles with engine code AUB
Vehicles with automatic gearbox
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850 rpm (930 rpm)2)
840 rpm (870 rpm)2)
680 rpm (800 rpm)2)
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---
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Engine speed (idling speed)
Vehicles with engine code AUA
Vehicles with engine code AUB
Vehicles with automatic gearbox
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800...900 rpm1)
790...890 rpm1)
630...730 rpm1)
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=> Page 01-90
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1)
Up-to-date specifications:
=> Exhaust emissions test binder
2)
Air conditioning system switched on
Note on display zone 2:
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◆ The engine speed specified by the engine control unit will be displayed (calculated by control unit).
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◆ The specified engine speed is increased when battery is heavily discharged or engine has overheated.
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Display group 60 -Speed regulation- Adaption of electronic accelerator system
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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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xx %
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xx %
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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 or ADP ERROR)
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ADP OK
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---
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Learning step counter
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0...12
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---
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Throttle valve angle (potentiometer 2 -G188)
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10...85 %
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---
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Throttle valve angle (potentiometer 1 -G187)
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10...85 %
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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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◆ If the voltage supply is interrupted (battery disconnected) the adaption (matching) must be carried out again => Page 24-115
Procedure after voltage supply open circuit.
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◆ The counter in display zone 3 counts up to 12 during the adaption (otherwise, fault entered in fault memory.
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◆ The basic settings are completed first when the counter in display zone 3 reaches step 12.
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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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---
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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 (potentiometer 1 -G187)
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0...100 %
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---
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Engine speed
Vehicles with engine code AUA
Vehicles with engine code AUB
Vehicles with automatic gearbox
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800...5700 rpm
790...6600 rpm
630...5700 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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xx %
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xx %
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xx %
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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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Accelerator pedal position sender 2 -G185
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0...100 %
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---
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Accelerator pedal position sender 1 -G79
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0...100 %
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---
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Throttle valve angle (potentiometer 2 -G188)
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3...97 %
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---
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Throttle valve angle (potentiometer 1 -G187)
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3...97 %
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---
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