Work step: 16, Diagnostic test: Heated Oxygen Sensor (HO2S) after three way catalytic converter

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.

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

Fig 1: Identifying Scan Tool Display - Function 15, Work Step 16

Increase engine speed between 2200 and 2800 RPM and check specifications after 15 seconds.

DISPLAY GROUP 116, FUNCTION: 04

Display fields

Display group 116, Function: 04

Display

xxxx ms.

xxx.x °C

x.xx V

xxxx xxxx

Indicated

Delay time

Three way catalytic converter temperature

HO2S 2 (S2) voltage, O2S switching

Diagnostic conditions

Specification

Approx. 1200 ms.

At least 360 °C

Approx. 0 V ⁽¹⁾

xxxx x100
x = Not relevant

Working range

0.0 to 999.9 °C

0 to 1.0 V

⁽¹⁾	Measured during deceleration phase.

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			CYCLE Bit = Diagnosis completed
						0		Diagnosis malfunction free
							0	DTC memory malfunction free

Press -C- button.