Skoda Workshop Service and Repair Manuals

Display groups 000 through 019 in idle Conditions l  Engine warm, coolant temperature above +80°C Display group 000 for vehicles ? 04.99

Reading measured value block								0	→	← Read-out on display
42	50	0	20	90	201	64	153	127	83
										Inducted air mass 1) 69...96 o.k. l  if outside the tolerance - display group 003 → Anchor
									Fuel temperature: 91...201
								Intake manifold temperature: 182...50
							Coolant temperature: 80...35 o.k. l  > 80: warm up engine
						Ambient air pressure: ignore
					Charge pressure: ignore
				Injection rate: 11...45 o.k. l  if outside the tolerance - display group 001 → Anchor
			Accelerator pedal position: 0
		Commencement of injection: 12...75 o.k. l  if outside the tolerance - display group 004 → Anchor
	Idling speed: 42...45 o.k. l  if outside the tolerance - display group 002 → Anchor

1) The measured values are valid for the activated exhaust gas recirculation. The exhaust gas recirculation is deactivated in idle after abotu 2 minutes, or press accelerator pedal briefly and start engine again. for vehicles 05.99 ?

Reading measured value block								0	→	← Read-out on display
42	50	0	20	90	201	64	153	127	83
										Inducted air mass 1) 69...110 o.k. l  if outside the tolerance - display group 003 → Anchor
									Fuel temperature: 91...201
								Intake manifold temperature: 190...80
							Coolant temperature: 80...35 o.k. l  > 80: warm up engine
						Ambient air pressure: ignore
					Charge pressure: ignore
				Injection rate: 15...45 o.k. l  if outside the tolerance - display group 001 → Anchor
			Accelerator pedal position: 0
		Commencement of injection: 12...75 o.k. l  if outside the tolerance - display group 004 → Anchor
	Idling speed: 43...46 o.k. l  if outside the tolerance - display group 002 → Anchor

1) The measured values are valid for the activated exhaust gas recirculation. The exhaust gas recirculation is deactivated in idle after abotu 2 minutes, or press accelerator pedal briefly and start engine again. Display group 001 for vehicles ? 04.99

Read measured value block 1 →				← Read-out on display
900 rpm	5.6 mg/s	1.480 V	87.3 °C
				Coolant temperature l  80...110°C o.k. l  < 80°C - warm up engine
			Voltage of modulating piston movement sender -G149- l  1.450...1.950 V: o.k. l  < 1.450 V: –  Injection pump damaged - replace injection pump → Chapter l  > 1.950 V: –  Engine loaded - switch off components –  Engine too cold - warm up engine –  Injection pump damaged - replace injection pump → Chapter
		Injection rate l  2.2...9.0 mg/s o.k. l  < 2.2 mg/s: –  Injection pump damaged - replace injection pump → Chapter l  > 9.0 mg/s: –  Engine loaded - switch off components –  Engine too cold - warm up engine –  Injection pump damaged - replace injection pump → Chapter
	Engine speed l  for vehicles ? 04.99 = 875...950 rpm o.k. l  for vehicles 05.99 ? = 861...945 rpm o.k.

for vehicles 05.99 ?

Read measured value block 1 →				← Read-out on display
900 rpm	5.6 mg/s	1.720 V	87.3 °C
				Coolant temperature l  80...110°C o.k., < 80°C - warm up engine
			Voltage of modulating piston movement sender -G149- l  1.30...2.10 V: o.k. l  < 1.30 V: –  Injection pump damaged - replace injection pump → Chapter l  > 2.10 V: –  Engine loaded - switch off components –  Engine too cold - warm up engine –  Injection pump damaged - replace injection pump → Chapter
		Injection rate l  3.0...9.0 mg/s o.k. l  < 3.0 mg/s: –  Injection pump damaged - replace injection pump → Chapter l  > 9.0 mg/s: –  Engine loaded - switch off components –  Engine too cold - warm up engine –  Injection pump damaged - replace injection pump → Chapter
	Engine speed → Anchor

Display group 002

Read measured value block 2 →				← Read-out on display
900 rpm	0.0 %	0 1 0	88.4 °C
				Coolant temperature l  85...100 °C o.k. l  < 85 °C - warm up engine
			Operating position → Anchor
		Accelerator pedal position l  0.0 % o.k. l  > 0.0 %: Accelerator pedal sender is incorrectly set or defective → Chapter
	Engine speed → Anchor

Analysis: Display of engine operating condition

Meaning, if display positions = 1
x	x	x	Engine operating condition
		1	Signal of air conditioning system - switch off air conditioning system
	1		o.k.: (Idling switch closed)
1			Idling speed increases: l  for activated air conditioning system ⇒ switch off air conditioning system l  detected when throttling and braking ⇒ check brake pedal switch l  for activated coolant additional heating ⇒ warm up engine

Display group 003

Read measured value block 3 →				← Read-out on display
900 rpm	290 mg/s	308 mg/s	54 %
				On/off ratio (actuation) of exhaust gas recirculation valve l  40...75 % o.k.
			Drawn in air mass l  230 ... 370 mg/s o.k., must correspond with display field 2 in tolerance ± 20 mg/s l  < 230 mg/s: –  Unmetered air in suction range - Testing intake system for tightness –  too much exhaust gas recirculation - test → Chapter l  > 370 mg/s –  Engine too cold - warm up engine –  too little exhaust gas recirculation - engine idles ⇒ since 2 minutes briefly blip throttle –  too little exhaust gas recirculation - test → Chapter –  air mass meter defective - testing → Chapter l  constant 550 mg/s: substitute value → Chapter
		The nominal air mass pumped by the control unit l  230...370 mg/s o.k. l  > 370 mg/s: –  Engine too cold - warm up engine –  Injection rate too high - → Anchor –  Intake manifold temperature too high - no correction possible
	Engine speed → Anchor

Display group 004

Read measured value block 4 →				← Read-out on display
900 rpm	0.9° b.TDC	0.9° b.TDC	3 %
				On/off ratio (actuation) of commencement of injection valve l  3...80%
			Momentary commencement of injection l  2° a.TDC...3° b.TDC o.k l  later 2° a. TDC: commencement of injection blocked –  Commencement of injection valve defective → Chapter –  Injection pump is far too late - Dynamically test and set commencement of injection → Chapter l  earlier 3° b. TDC: –  Engine too cold - warm up engine –  Commencement of injection valve defective → Chapter –  Injection pump is far too early - dynamically test and set commencement of injection → Chapter
		The nominal injection commencement pumped by the control unit l  2° a.TDC...3° b.TDC o.k l  earlier 3° b. TDC: –  Engine too cold - warm up engine
	Engine speed → Anchor

Display group 006 Ignition switched on.

Read measured value block 6 →				← Read-out on display
0 km/h	000	000000	0
				CCS Operating condition → Anchor
			Operating condition of cruise control → Anchor
		Brake pedal monitoring → Anchor
	Speed: ignore

Analysis: table 1; Brake pedal monitoring

Display field 2	Operating condition of the clutch pedal and brake pedal	X	X	X	Operating condition of the pedal switch at display positions = 1
000	Clutch pedal and brake pedal not pressed			1	Brake light switch -F- closed
011	Brake pedal depressed (brake light switch)
011	Brake pedal depressed (brake pedal switch)		1		Brake pedal switch -F47- open
100	Clutch pedal actuated	1			Clutch pedal switch -F36- open
111	Clutch pedal and brake pedal pressed

Analysis: table 2, operating condition of the cruise control system (CCS)

Cruise control	Display field 3
Switch -B- to “ON”	000011
Switch -B- to “RES”	001011
Switch -A- operated	000111
Switch -B- to “OFF” before operating point	000001
Switch -B- locked to “OFF”	000000
Brake pedal actuated	010011
Clutch pedal actuated	100011

Analysis: table 3, CCS Operating condition

CCS Operating condition
0	Vehicle with CCS - CCS switched off
1	Vehicle with CCS - CCS switched on
2 5 5	Vehicle without CCS, or CCS function in engine control unit not activated

Display group 007   WARNING Ignition switched on, engine cool and standing.

Read measured value block 7 →				← Read-out on display
15.4 °C		15.9 °C	16.7 °C
				Coolant temperature (at coolant temperature sender -G62-) l  in case of a line interruption the approximative fuel temperature is displayed as replacement value
			Intake manifold temperature (at intake manifold temperature sender -G72-) l  in case of a line interruption, a replacement value of 136.8 °C is constantly displayed
		No display
	Fuel temperature (at fuel temperature sender -G81-) l  in case of a line interruption, a replacement value of -5.4°C is constantly displayed

Note t  It is not possible to give a nominal value indication for temperatures. t  Once the engine has cooled down the temperatures of the fuel, intake manifold and coolant must approximately correspond with the ambient temperature. If there is a marked value difference check the relevant sender. Display group 013 t  The injection system has an idle smoothness regulator. It is possible to detect differences in performance between individual cylinders (part tolerances, injector flow, compression etc.) and to compensate for these by selectively metering the quantity injected in the idling speed range. t  Differences are detected in the idling speed range on the basis of the signal supplied by the engine speed sender which supplies four signals to the control unit for each crankshaft revolution. If the signals have the same rhythm, the cylinder have the same output. If a cylinder has a lower output, the crankshaft will need more time for the next half crankshaft rotation. As opposed to this a high output cylinder will accelerate the crankshaft to such an extent that it will need less time. t  Once the control unit has identified a deviation, the relevant cylinder will immediately be supplied with a greater or smaller injection rate until the engine again runs “smoothly”. t  +... mg/s: The relevant cylinder has less output and is therefore supplied with more fuel. t  -... mg/s: The relevant cylinder has more output and is therefore supplied with less fuel.

Read measured value block 13 →				← Read-out on display
0.82 mg/s	-0.12 mg/s	0.49 mg/s	-0.12 mg/s
				Smooth running control - injected quantity cylinder 4 l  -2.0 mg/s...+2.0 mg/s o.k. l  > +2.0 mg/s: 4th cylinder weak l  < -2.0 mg/s: 4th cylinder strong
			Smooth running control - injected quantity cylinder 3 l  -2.0 mg/s...+2.0 mg/s o.k. l  > +2.0 mg/s: 3rd cylinder weak l  < -2.0 mg/s: 3rd cylinder strong
		Smooth running control - injected quantity cylinder 2 l  -2.0 mg/s...+2.0 mg/s o.k. l  > +2.0 mg/s: 2nd cylinder weak l  < -2.0 mg/s: 2nd cylinder strong
	Smooth running control - injected quantity cylinder 1 l  -2.0 mg/s...+2.0 mg/s o.k. l  > +2.0 mg/s: 1st cylinder weak l  < -2.0 mg/s: 1st cylinder strong

Display group 016

Read measured value block 16 →				← Read-out on display
99.0 %	10000001	00	14.2 V
				Supply voltage from control unit: ignore
			Heating element control → Anchor
		Operating condition of the additional heating → Anchor
	Generator capacity: ignore

Analysis: table 1; Operating condition of the additional heating

Meaning, if display positions = 1
X	X	X	X	X	X	X	X	Additional heating deactivated, because:
							1	Coolant temperature greater than 70...80°C or intake air temperature greater than 5°C 1)
						1		AC generator defective
					1			Battery voltage below 9 V
				1				for vehicles ? 04.99 - engine speed below 875 rpm for vehicles 05.999 ? - engine speed below 861 rpm
			1					Engine start within the last 10 seconds
		1						Coolant temperature sender -G62- or intake manifold temperature sender -G72- defective
	1							Ignore
1								Ignore

1) If intake air temperature sender is 5°C at engine start, then the additional heating is deactivated when reaching 70°C coolant temperature sender. If the air temperature is - 10°C, then the deactivation is performed only at 80°C coolant temperature. Analysis: table 2; Heating element control

Meaning, if display positions = 1
X	X	Heating element control
	1	Low heat output relay -J359-, switched on
1		High heat output relay -J360 -, switched on

Display group 019

Read measured value block 19 →				← Read-out on display
0.780 V	4.150 V
				No display
			No display
		Voltage of modulating piston movement sender at maximum limit of metering adjuster l  4.150...4.740 V: o.k. l  outside tolerance: –  Transition impedances in line connection - test → Chapter –  Metering adjuster of the injection pump adjusted - replace injection pump → Chapter
	Voltage of modulating piston movement sender at minimum limit of metering adjuster l  0.500...0.970 V: o.k. l  outside tolerance: –  Transition impedances in line connection - test → Chapter –  Metering adjuster of the injection pump adjusted - replace injection pump → Chapter