Volkswagen Golf 2004 Service Manual page 173

– Using adapter cable -VAS 5087/3- , connect "Output" of en‐
gine speed adapter -VAS 5087- to pick-up clamp input of
diesel tester -V.A.G 1743- .
– Turn switch for number of cylinders to respective number of
cylinders.
– Connect a wire from adapter -VAS 5087/1- to -VAS 5087-
(socket -VAS 5087/1- ).
– Using the other wires from adapter -VAS 5087/1- make a con‐
nection to the vehicle battery, by connecting:
♦ Red clamp on positive
♦ Black clamp on negative.
– Start engine and run at idling speed.
– Press the button on engine speed adapter -VAS 5087- .
Start
The red signal lamp must flash for about 10 seconds. Then the
green signal lamp must light up.
The engine speed must now be displayed on diesel tester -
V.A.G 1743- .
If the engine speed is displayed incorrectly or not at all: see "Op‐
erating instructions for VAS 5087".
Perform exhaust emissions test according to instructions on die‐
sel tester -V.A.G 1743- display.
If the following is indicated on display:
n rpm mode k 1/m
XXX XXXX B X.XX
Unit ready to carry out measurements.
Checking idling speed:
Idling speed not within specified range:
Note
The idling speed and maximum speed can be checked but not
adjusted.
– If the values are not within specified range, a repair measure
must be made.
Perform acceleration test:
– Press button for "Acceleration test".
First, a fresh air comparison is performed.
If the following is indicated on display:
n rpm tB s k 1/m
XXX XXXX -.- X.XX
Current values for temperature and speed are displayed.
The arrow pointing upwards indicates that the unit is waiting for
the throttle burst.
– Depress accelerator pedal fully and hold for specified time.
– Check maximum engine speed (not adjustable).
T °C
XX
Gas T °C M
0 XX -
Golf 2004 ➤ , Golf Plus 2005 ➤
Maintenance - Edition 11.2009
5. Exhaust emissions test
169