fuel pressure AUDI A8 1997 D2 / 1.G ATQ Engine Output Diagnostic Test Mode Workshop Manual

01-58

Test requirement:

Fuses for engine electronics OK

Test sequence

- Connect VAS5051 tester or VAG1551 scan tool
and select the control module for engine
electronics using "address word" 01 Page 01
-
9 .

Ignition must remain switched on for this.Rapid data transfer
HELP
Select function XX

When indicated on display:
- Press buttons -0- and -3- to select "output Diagnostic Test Mode" and
press -Q- button to confirm input.
Rapid data transfer
Q
03-Output Dia
gnostic Test Mode

Indicated on display:
Activating the EVAP canister purge regulator valve (tank vent valve)
Note:
The Fuel Pump (FP) relay must trigger, the Fuel Pump (FP) must run,
flowing noise at fuel pressure regulator is clearly audible. If Fuel Pump
(FP) does not run, check activation Page 24
-52
. - Confirm input using the -Q- button.
Pa
ge 3 of 12 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
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