Volkswagen Workshop Service and Repair Manuals > Golf Mk4 > Power unit | Direct injection and preglow system with distributor-type pump to 04.99 | Self diagnosis, V.A.G Inspection Service | Measured value blocks | Evaluating measured value blocks | Display group 004 at full throttle (road test in 3rd gear, coolant temperature not below 80 °C)

Evaluation: Commencement of injection (actual) display > < Display group 000 at full throttle (road test in 3rd gear, coolant temperature not below 80 °C)

Display group 004 at full throttle (road test in 3rd gear, coolant temperature not below 80 °C)

Display group 004 at full throttle (road test in 3rd gear, coolant temperature not below 80 °C)

Note

t	When testing, accelerate the vehicle at full throttle.

t	The measured values must be printed out or read (2nd person required) when the revolutions reach 3000 rpm.

Display group 004 -Commencement of injection-
Read measured value block 4			→	▾ Indicated on display
xxxx rpm	xx.x ° B/ATDC	xx.x ° B/ATDC	xxx %
1	2	3	4	▾ Display zones	Specification	Evaluation
				Duty cycle from commencement of injection valve -N108- Engine codes AGR, AHF, ALH, AQM Engine code AGP	70…95 % 20…80 %	→ Chapter
			Commencement of injection (actual)		Approx. commencement of injection (specified)	→ Chapter
		Commencement of injection (specified) Engine codes AGR, AHF, ALH Engine code AGP Engine code AQM			8...14° BTDC 6...12° BTDC 6...10° BTDC	---
	Engine speed Engine codes AGR, AHF, ALH, AGP Engine code AQM				2900…3100 rpm 2800…3200 rpm	---

Power unit
Direct injection and preglow system with distributor-type pump to 04.99 / Self diagnosis, V.A.G Inspection Service
Measured value blocks / aluating_measured_value_blocks/">Evaluating measured value blocks
Display group 004 at full throttle (road test in 3rd gear, coolant temperature not below 80 °C)

Evaluation: Commencement of injection (actual) display > < Display group 000 at full throttle (road test in 3rd gear, coolant temperature not below 80 °C)