SEAT Workshop Service and Repair Manuals

Analysis measurement value blocks, display groups 50...69 -speed control-

Display group 50 -speed control-, operational states
l  Engine idling
Read measurement value block 50			→	← The display reads:
xxxx rpm	xxxx rpm	text	text
1	2	3	4	← Display fields	Target value	Analysis
				Air conditioning compressor operational state ON/OFF	Compr. ON orcompr. OFF	---
			Air conditioner operational state		A/C-High orA/C-Low	---
		Engine revs (idling revs target value)			850 rpm	---
	Engine revs (idling revs)				810...890 rpm	→ Anchor

Note on display field 2:

t	Target engine revs predetermined by the engine control unit are displayed (internally calculated value by the engine control unit).

Note on display field 3:

t	A/C-High = the air conditioner requests a high heat or cooling output.

t	A/C-Low = the air conditioner is off.

Note on display field 4:

t	On vehicles without air conditioning the display always reads “Compr. OFF”.

t	Test the signals from/to the air conditioning compressor → Chapter.

Display group 54 -speed control-
l  Running
Read measurement value block 54			→	← The display reads:
xxxx rpm	text	xxx.x %	xxx.x %
1	2	3	4	← Display fields	Target value	Analysis
				Throttle valve angle(potentiometer 1 -G187-)	0.0...100.0 %	---
			Accelerator pedal position sender 1 -G79-		0.0...100.0 %	---
		Engine load state:Idling, half load, enriching, deceleration, full load			---	---
	Engine revs				810...5700 rpm	---

Display group 55 -idling control-, idling stabilisation
l  Engine idling
Read measurement value block 55			→	← The display reads:
xxxx rpm	xx.x %	xx.x %	xxxxx
1	2	3	4	← Display fields	Target value	Analysis
				Load states	xxxxx	→ Anchor
			Adaptive value for idling control: Air conditioner ON (A/C-High) Air conditioner OFF (A/C-Low)		–8.0...8.0 % -5.0...5.0 %	---
		Idling control			-4.3...12.2 %	---
	Engine revs (idling revs)				810...890 rpm	→ Anchor

Note on display field 3:

t	Shows how far idling stabilisation differs due to self-adaptation from average value predetermined in engine design. With new engines the value is positive due to high friction between components, while the value is negative on broken in engines.

Meaning of the 5-digit numerical block, display field 4 - load states

Meaning if digit = 1
1	2	3	4	5	Meaning
				1	Air conditioning compressor
			x		Without meaning
		1			Air conditioning, on
	x				Without meaning
x					Without meaning

Display group 56 -speed control-, idling stabilisation
l  Engine idling
Read measurement value block 56			→	← The display reads:
xxxx rpm	xxxx rpm	xx.x %	xxxxx
1	2	3	4	← Display fields	Target value	Analysis
				Load states	xxxxx	→ Anchor
			Idling control		-4.3...12.2 %	---
		Engine revs (idling revs target value)			850 rpm	---
	Engine revs (idling revs real value)				810...890 rpm	→ Anchor

Note on display field 2:

t	Target engine revs predetermined by the engine control unit are displayed (internally calculated value by the engine control unit).

Display group 60 -speed control-, electronic accelerator system adaptation → Note
l  Ignition on, engine off
l  Control unit in mode 04 - Basic settings
Read measurement value block 60			→	← The display reads:
xx %	xx %	x	text
1	2	3	4	← Display fields	Target value	Analysis
				Adaptation state (ADP. ON/ADP. OK/ADP ERROR)	ADP. OK	---
			Self-adaptation step counter		0...8	---
		Throttle valve angle (potentiometer 2 -G188-)			90...10 %	---
	Throttle valve angle (potentiometer 1 -G187-)				10...90 %	---

1)	Adapt the engine control unit to the throttle valve drive unit → Chapter.

Notes on display field 60:

t	When adapting the throttle valve drive unit the ignition must be on.

t	When display group 60 is selected in function 04 “Basic settings”, the engine control unit is adapted to the throttle valve drive. This adaptation must be carried out after replacing the throttle valve drive unit (or complete engine) or the engine control unit.

t	After an interruption in voltage supply (battery disconnected) this adaptation must also be carried out → Chapter , How to proceed after an interruption in voltage supply.

t	During the adaptation, the counter in display field 3 goes from 0 to 8.

Display group 61 -idling control-, electronic accelerator system
l  Running
Read measurement value block 61			→	← The display reads:
xxxx rpm	---	xxx.x %	xxxxx
1	2	3	4	← Display fields	Target value	Analysis
				Load states	xxxxx	→ Anchor
			Throttle valve angle (potentiometer 1 -G187-)		0.0...100.0 %	---
	Engine revs				810...5700 rpm	---

Display group 62 -idling control-, electronic accelerator system
l  Ignition on, engine off
Read measurement value block 62			→	← The display reads:
xx %	xx %	xx %	xx %
1	2	3	4	← Display fields	Target value	Analysis
				Accelerator pedal position sender 2 -G185-	4...49 %	---
			Accelerator pedal position sender 1 -G79-		12...97 %	---
		Throttle valve angle (potentiometer 2 -G188-)			90...10 %	---
	Throttle valve angle (potentiometer 1 -G187-)				10...90 %	---

Display group 66 -engine revs control-, brake pedal/brake light switch position
l  Ignition on, engine off
l  Engine idling → Note
Read measurement value block 66			→	← The display reads:
xxx km/h	xxxxxxxx	xxx km/h	xxxx
1	2	3	4	← Display fields	Target value	Analysis
				CCS activation switch position	---	---
		Brake pedal switches position			xxxxxx10	→ Anchor
	Driving speed (real)				---	---

2)	Only for the test of the brake pedal switch -F47-.

Note on display field 2:

t	With the ignition on and the brake pedal not depressed.

Meaning of the 8-digit numerical block, display field 2 - brake pedal switches position

1	2	3	4	5	6	7	8	Meaning if digit = 1
							1	Brake depressed (brake light switch -F-
						1		Brake not depressed (brake pedal switch -F47-)
					x			Without meaning
				x				Without meaning
			x					Without meaning
		x						Without meaning
	x							Without meaning
x								Without meaning

t	Test the brake light switch → Chapter.

t	Test the brake pedal switch → Chapter.