Work step: 3 Diagnostic test: Engine warm -up

WARNING: This page does not describe the selected car, but rather 8 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.

Press -0- and -8- buttons to select "Read measuring value block" function 08.
Press -Q- button to enter input.

Display will appear as shown

Fig 1: Identifying Scan Tool Display - Function 15, Work Step 3 (1 Of 2)

Press buttons -1-, -0- and -3- to input display group 103.
Press -Q- button to enter input.

Display will appear as shown (1 to 4 = display fields)

Fig 2: Identifying Scan Tool Display - Function 15, Work Step 3 (2 Of 2)

Increase engine speed to 3000-3500 RPM and check specifications after 60 seconds.

DISPLAY GROUP: 103, FUNCTION: 08

	Display fields
	1	2	3	4
Display group: 103		Function: 08
Display	-	xxx.x °C	xxx.x °C	xxxx xxxx
Indicated	-	Engine coolant temperature	Three way catalytic converter temperature (calculated)	Diagnostic conditions
Specification	-	At least 40 °C	360 °C	xx1x xxx0
Working range	-	-46.5° to 141.0° C	0.0° to 999.9 C	x = Not relevant

RELEVANCE OF 8 DIGIT NUMBER BLOCK IN DISPLAY FIELD 4

Relevance of 8 digit number block in display field 4
1	2	3	4	5	5	7	8	Specifications of diagnostic conditions
		1						Oxygen Sensor (O2S) control active
							0	DTC memory malfunction free

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