Functional check

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1999 Volkswagen Jetta, 1999 Volkswagen GTI, 1998 Volkswagen Jetta, 1998 Volkswagen GTI, and 1997 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Connect VAG 1551/1552 Scan Tool.

Start engine and let idle.
Press -0- and -1- buttons to select Address word 01 "Engine electronics".

Fig 1: Identifying VAG 1551/1552 Scan Tool Display (Rapid Data Transfer)

Display will appear as shown

Press -0- and -4- buttons to select Function 04 "Basic setting".
Press -Q- button to enter input.

Display will appear as shown

Press -1-, -5- and -3- buttons to select "Display group 153".
Press -Q- button to enter input.

Indicated on display (1-4 = Display fields)

Fig 2: Identifying VAG 1551/1552 Scan Tool Display (System In Basic Setting - Display group 153)

Run engine at idle speed (800 -880 RPM) and check specifications after 60 seconds.

DISPLAY GROUP 153: EVAPORATIVE EMISSIONS SYSTEM, CHECKING

	Display zones
	1	2	3	4
Indicated	Engine coolant temperature	Intake air temperature	Leak-down, pressure/time	2.8 Liter VR6 OBD II Fuel Injection and Ignition
Spec.	5°-80° C	5°-45° C	Min. 1.6 sec.	xxxxx100

Press ==> button.