Reading Measured Value Block; Display Groups 001 To 022, Engine Idling - Skoda Octavia 1997 Workshop Manual

OCTAVIA 1997 1.9/74 kW (TDI) Engine, Fuel Injection and Glow Plug System
01-4 Self-diagnosis IV

Reading measured value block

Special tools, test and measuring equipment and
auxiliary items required
Vehicle system tester -V.A.G 1552- with cable
-V.A.G 1551/3, 3A, 3B oder 3C-
Test conditions
•
Coolant temperature must be at least 75 °C.
•
All electrical consumers, e.g. lights and rear window
heater, must be switched off.
•
If vehicle is equipped with air conditioning, this must
be switched off.
Procedure
–
Connect vehicle system tester -V.A.G 1552-. Start en-
gine and select the address word 01 „Engine electron-
ics" Chapter 01-1.
–
Enter function 08 „Read measured value block" and
confirm entry with
Q
–
Enter display group

Display groups 001 to 022, engine idling

Display group 001 in idle (engine warm, coolant temperature not below 75 °C)
Read measured value block 1
xxx xx.x
rpm mg/s
1 2
Engine speed
Analysis: Display group 001, display field 2 - Injection rate
Readout on -V.A.G 1552-
below 3.0 mg/s
above 9.0 mg/s
Edition 12.03
S00.5139.52.20
.
01-4 page 1.
< Readout on display
x.xx xxx.x
°KW °C
3 4 < Display field
Coolant temperature
Fuel delivery duration (set value)
Injection rate
–
Check unit injector
–
Warm up engine by running at high revs and repeat test.
–
Check unit injector
Rectifying fault
Chap. 23-3.
Chap. 23-3.
Self-diagnosis IV
Specification Analysis
75,0...110.0 °C
5...8 °KW
3,0...9.0 mg/s
800...950 rpm
01-4
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