Skoda Octavia Workshop Service and Auto Repair Manuals

Display groups 000 through 011 under full load Conditions l  Test drive in 3rd or 4th gear, coolant temperature not below 80°C l  Engine speed 2900 ... 3100 rpm Display group 000 for vehicles ? 07.97   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Reading measured value block								0	→	← Read-out on display
186	225	255	186	186	201	64	138	175	233
										Inducted air mass: > 210 o.k. l  < 210 - display group 010 → Anchor
									Fuel temperature: no specified value
								Intake manifold temperature: no specified value
							Coolant temperature: 80...51 o.k. l  > 80: warm up engine
						Ambient air pressure: ignore
					Charge pressure: 171...191 o.k. l  if outside the tolerance - display group 011 → Anchor
				Injection rate: 170...195 (full load injection rate) o.k. l  125: Emergency injection rate, system fault detected → Chapter
			Accelerator pedal: 255 (fully depressed)
		Commencement of injection: 180...245 (in line with speed) l  if outside the tolerance - display group 004 → Anchor
	Engine speed: 160...190 (do not exceed 4000 rpm, engine is cut off)

for vehicles 08.97 ? 04.99   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Reading measured value block								0	→	← Read-out on display
146	205	255	184	186	201	64	138	175	255
										Inducted air mass: > 255 o.k. l  < 255 - display group 010 → Anchor
									Fuel temperature: 91...201 o.k.
								Intake manifold temperature: 182...50 o.k.
							Coolant temperature: 80...35 o.k. l  > 80: warm up engine
						Ambient air pressure: 183...224 o.k.
					Charge pressure: 164...202 o.k. l  if outside the tolerance - display group 011 → Anchor
				Injection rate: 174...154 (full load injection rate) o.k. l  125: Emergency injection rate, system fault detected → Chapter
			Accelerator pedal: 255 (fully depressed)
		Commencement of injection: 138...215 (in line with speed) l  if outside the tolerance - display group 004 → Anchor
	Engine speed: 138...148

for vehicles 05.99 ?   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Reading measured value block								0	→	← Read-out on display
146	205	255	184	186	201	64	138	175	255
										Inducted air mass: > 255 o.k. l  < 255 - display group 010 → Anchor
									Fuel temperature: 91...201 o.k.
								Intake manifold temperature: 190...35 o.k.
							Coolant temperature: 80...35 o.k. l  > 80: warm up engine
						Ambient air pressure: 183...224 o.k.
					Charge pressure: 179...215 o.k. l  if outside the tolerance - display group 011 → Anchor
				Injection rate: 199...214 (full load injection rate) o.k. l  125: Emergency injection rate, system fault detected → Chapter
			Accelerator pedal: 255 (fully depressed)
		Commencement of injection: 137...215 (in line with speed) l  if outside the tolerance - display group 004 → Anchor
	Engine speed: 134...153

Display group 004 for vehicles ? 07.97   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 4 →				← Read-out on display
3040 rpm	16.3° b.TDC	16.1° b.TDC	84 %
				On/off ratio (actuation) of commencement of injection valve l  no nominal value
			Momentary commencement of injection l  such as nominal injection commencement in display field 2 (tolerance ± 2°), then it is o.k. l  outside tolerance: –  Start of delivery of injection pump incorrect - test commencement of injection → Chapter –  Injection timing blocked: Commencement of injection valve defective → Chapter
		The nominal injection commencement pumped by the control unit l  14...18° b. TDC o.k.
	Engine speed l  2900...3100 rpm o.k.

for vehicles ? 04.99   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 4 →				← Read-out on display
3060 rpm	9.3° b.TDC	9.1° b.TDC	84 %
				On/off ratio (actuation) of commencement of injection valve l  no nominal value
			Momentary commencement of injection l  such as nominal injection commencement in display field 2 (tolerance ± 5°), then it is o.k. l  outside tolerance: –  Early adjustment of injection pump incorrect - dynamically testing and setting the commencement of injection → Chapter –  Commencement of injection valve defective → Chapter –  Injection timing blocked - inspect injection timing control range → Chapter –  Air in fuel supply - test fuel suppy for tightness
		The nominal injection commencement pumped by the control unit l  8...14° b. TDC o.k.
	Engine speed l  2900...3100 rpm o.k.

for vehicles 05.99 ?   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 4 →				← Read-out on display
3060 rpm	9.3° b.TDC	9.1° b.TDC	84 %
				On/off ratio (actuation) of commencement of injection valve l  50...95 %: o.k. l  outside tolerance: –  Commencement of injection valve defective → Chapter –  Dynamically testing and setting the commencement of injection → Chapter
			Momentary commencement of injection l  such as nominal injection commencement in display field 2 (tolerance ± 5°), then it is o.k. l  outside tolerance: –  Early adjustment of injection pump incorrect - dynamically testing and setting the commencement of injection → Chapter –  Commencement of injection valve defective → Chapter –  Injection timing blocked - inspect injection timing control range → Chapter –  Air in fuel supply - test fuel suppy for tightness
		The nominal injection commencement pumped by the control unit l  8...14° b. TDC o.k.
	Engine speed l  2900...3100 rpm o.k.

Display group 008 for vehicles ? 07.97   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 8 →				← Read-out on display
3040 rpm	40.4 mg/s	37.2 mg/s	39.7 mg/s
				Injection rate limit based on air mass detected > 39 mg/s: o.k. l  < 39 mg/s: –  detected air mass too small - test air mass meter → Chapter –  Test exhaust gas recirculation under full load → Chapter
			Injection rate limit based on engine speed (torque limit) 34...39 mg/s o.k. l  < 34 mg/s: Speed too high or too low l  > 39 mg/s: Injection rate increase through “tuning”
		Nominal injection rate (accelerator pedal position) > 39 mg/s o.k. l  < 39 mg/s: –  Do not depress accelerator pedal, accelerator pedal sender -G79- is incorrectly set or defective - test → Chapter
	Engine speed 2900...3100 rpm o.k.

for vehicles 08.97 ? 04.99   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 8 →				← Read-out on display
3090 rpm	40.4 mg/s	36.2 mg/s	37.7 mg/s
				Injection rate limit based on air mass detected 36...39 mg/s: o.k. l  < 36 mg/s: –  detected air mass too small - test air mass meter → Chapter –  too much exhaust gas recirculation - test → Chapter
			Injection rate limit based on engine speed (torque limit) 35.5...36.5 mg/s o.k. l  < 35.5 mg/s: Speed too high or too low (nominal speed 3000 rpm) l  > 36.5 mg/s: Injection rate increase through “tuning”
		Nominal injection rate (accelerator pedal position) 40...42 mg/s o.k. l  < 40 mg/s: –  Do not depress accelerator pedal, accelerator pedal sender -G79- is incorrectly set or defective - test → Chapter
	Engine speed 2900...3100 rpm o.k.

for vehicles 05.99 ?   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 8 →				← Read-out on display
3090 rpm	40.4 mg/s	36.2 mg/s	37.7 mg/s
				Injection rate limit based on air mass detected 37...40 mg/s: o.k. l  < 37 mg/s: –  detected air mass too small - test air mass meter → Chapter –  too much exhaust gas recirculation - test → Chapter
			Injection rate limit based on engine speed (torque limit) 34.2...38.2 mg/s o.k. l  < 34.2 mg/s: Speed too high or too low (nominal speed 3000 rpm) l  > 38.2 mg/s: Injection rate increase through “tuning”
		Nominal injection rate (accelerator pedal position) 38...42 mg/s o.k. l  < 38 mg/s: –  Do not depress accelerator pedal, accelerator pedal sender -G79- is incorrectly set or defective - test → Chapter
	Engine speed 2900...3100 rpm o.k.

Display group 010 for vehicles ? 07.97   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 10 →				← Read-out on display
830 mg/s	1030 mbar	1850 mbar	100%
				Accelerator pedal position: 100 % o.k. l  < 100 %: –  Do not depress accelerator pedal –  Accelerator pedal sender -G79- is incorrectly set or defective - test → Chapter
			Momentary charge pressure: 1700...2150 mbar o.k. outside the tolerance: –  Charge pressure control defective - display group 011 → Anchor
		Air pressure: no specified value
	Inducted air mass: 750...850 mg/s o.k. l  < 750 mg/s: –  Engine speed below 2000 rpm or over 4000 rpm –  Charge pressure too low - observe display field 3 –  Unmetered air between air mass meter and turbocharger –  air mass meter defective - testing → Chapter

for vehicles 08.97 ? Coolant temperature above +80°C, Engine speed 2900...3100 rpm   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 10 →				← Read-out on display
830 mg/s	1030 mbar	1850 mbar	100%
				Accelerator pedal position: 100 % o.k. l  < 100 %: –  Do not depress accelerator pedal –  Accelerator pedal sender -G79- is incorrectly set or defective - test → Chapter
			Momentary charge pressure: 1750...2050 mbar o.k. outside the tolerance: –  Charge pressure control defective - display group 011 → Anchor –  Turbocharger defective - testing → Chapter
		Air pressure: no specified value
	Inducted air mass: 800...1000 mg/s o.k. l  < 800 mg/s: –  Engine speed too low or too high (nominal speed 3000 rpm) –  Charge pressure too low - observe display field 3 –  Unmetered air between air mass meter and turbocharger –  air mass meter defective - testing → Chapter l  constant 550 mg/s: substitute value → Chapter

Display group 011 for vehicles ? 07.97   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 11 →				← Read-out on display
3040 rpm	1830 mbar	1850 mbar	68 %
				On/off ratio (actuation) of solenoid valve for charge pressure control -N75-
			Momentary charge pressure l  1700...2150 mbar o.k., must correspond with display field 2 in tolerance ±100 mbar l  too low charge pressure: –  Checking no charge pressure control → Chapter l  too much charge pressure: –  Pressure hose of charge pressure control released or clogged, solenoid valve -N75- jams - Test charge pressure → Chapter –  Linkage at turbocharger rusted tight, pressure box defective - test charge pressure → Chapter
		The nominal charge pressure determined by the control unit l  1800...2050 mbar o.k. l  > 2050 mbar: Charge pressure increase through “tuning”
	Engine speed 2900...3100 rpm o.k.

for vehicles 08.97 ? Engine speed 2900...3100 rpm   Note t  Accelerate vehicle at full throttle before inspecting. t  The measured values must be read off or printed out once an engine speed of 3000 rpm is reached (2nd person required).

Read measured value block 11 →				← Read-out on display
3040 rpm	1870 mbar	1850 mbar	68 %
				On/off ratio (actuation) of solenoid valve for charge pressure control -N75- 45...95% o.k.
			Momentary charge pressure l  1750...2050 mbar o.k., must correspond with display field 2 in tolerance ±100 mbar l  too low charge pressure: –  Checking no charge pressure control → Chapter l  too much charge pressure: –  Pressure hose of charge pressure control released or clogged, solenoid valve -N75- jams - Test charge pressure → Chapter –  Linkage at turbocharger rusted tight, pressure box defective - test charge pressure → Chapter
		The nominal charge pressure determined by the control unit l  1850...1950 mbar o.k. l  > 1950 mbar: Charge pressure increase through “tuning”
	Engine speed 2900...3100 rpm o.k.