Test conditions:
- Engine running at idling speed
Display on VAS5051:
- - Enter display group
- max. input value = 255
- Enter "030" for "display group number 030" in zone -2- and confirm entry by pressing -Q- button.
Display on VAS5051:
- Activate basic setting by pressing -A- button.
- Check indication in display fields -1- to -4-.
NOTE:
- By increasing the engine speed the specified values are achieved sooner.
- The "heated oxygen sensor (HO2S) status" indicates the condition of the oxygen sensor (O2S) control and the heated oxygen sensors (HO2S).
DISPLAY GROUP 030: HEATED OXYGEN SENSOR (HO2S) STATUS
| Display zones | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 030: Heated oxygen sensor (HO2S) status | ||||
| Display | X X X X X | X X X X | X X X X X | X X X X |
| Display | Heated oxygen sensor (HO2S) status, Bank 1, Sensor 1 | Heated oxygen sensor (HO2S) status, Bank 1, Sensor 2 | Heated oxygen sensor (HO2S) status, Bank 2, Sensor 1 | Heated oxygen sensor (HO2S) status, Bank 2, Sensor 2 |
| Range | 0 = off 1 = on |
0 = off 1 = on |
0 = off 1 = on |
0 = off 1 = on |
| Specif. value | 1 1 1 | 1 1 0 | 1 1 1 | 1 1 0 |
SIGNIFICANCE OF LAST 3 DIGITS IN READOUT OF DISPLAY GROUP 030
| Significance of last 3 digits in readout of display group 030 | |||
| X | X | X | Display zones 1...4 |
| X | Condition of heated oxygen sensor (HO2S) heating: 0 = not active; 1 = active | ||
| X | Heated oxygen sensor (HO2S) condition: 0 = not active; 1 = active | ||
| X | Oxygen sensor (O2S) control 0 = not active; 1 = active | ||
NOTE:
- The first digit of the relevant 3 -digit display (heating) fluctuates between 0 and 1.
- The oxygen sensor (O2S) control for heated oxygen sensor (HO2S) behind catalytic converter (Bank 1, Sensor 2 and Bank 2, Sensor 2) is not active without engine load, i.e. the last digit of the 3 -digit display is 0.
- Continue test when displays have achieved "111" in display zones 1 and 3 and "110" in display zones 2 and 4.
- Press --> button.
- Perform next operation.