Work step: 8 Diagnostic test: Secondary Air Injection (AIR) system

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.

Vehicle stationary

NOTE: Not all vehicles have this system installed. If this system is not found on the vehicle you are working with; skip this work step.

Display will appear as shown

Fig 1: Identifying Scan Tool Display - Function 15, Work Step 8 (1 Of 2)

Press buttons -1-, -6- and -0- to input display group 160.
Press -Q- button to enter input.

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

Fig 2: Identifying Scan Tool Display - Function 15, Work Step 8 (2 Of 2)

Allow engine to idle and check specifications after 20 seconds.

DISPLAY GROUP: 160, FUNCTION: 04

	Display fields
	1	2	3	4
Display group: 160, Function: 04
Display	xxx.x °C	xx.x %	xx.x %	xxxx xxxx
Indicated	Engine coolant temperature	Oxygen Sensor (O2S) % change	Oxygen sensor % change	Diagnostic conditions
Specification	45 °C min.	0.7 %	25 %	xx11 x100
Working range	-46.5 to 141.0 °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	6	7	8	Specifications of diagnostic conditions
		1						Engine running at idle
			1					Vehicle stationary
					1			CYCLE Bit = Diagnosis completed
						0		Diagnosis malfunction free
							0	DTC memory malfunction free

Press -C- button.