Work step 5: Check operating condition of oxygen sensor control
- Start engine (for a vehicle with manual transmission: engage clutch).
NOTE:
After starting engine, it may be necessary to select the Engine Control Module (ECM) again using "address word" 01 and the function "Initiate basic setting" using "04".
- Install VAG1788/10 RPM adjuster on accelerator pedal and raise engine speed.
- Specification: 2200 RPM
When indicated on display:
Fig 1: Identifying VAG1551 Scan Tool Display - Check Operating Condition Of Oxygen Sensor Control (1 Of 2)
- Press buttons -0-, -3- and -0- to select "display group number 030" and press -Q- button to confirm input.
When indicated on display:
Fig 2: Identifying VAG1551 Scan Tool Display - Check Operating Condition Of Oxygen Sensor Control (2 Of 2)
- Check oxygen sensor status in display fields 1 to 4.
NOTE:
A few minutes may pass until a diagnostic result is reached.
DISPLAY GROUP 030: OXYGEN SENSOR STATUS WITH ENGINE AT IDLE
| Display fields | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 030: Oxygen sensor status with engine at idle | ||||
| Display | X X X | X X X | X X X | X X X |
| Indicated | Oxygen sensor status, bank 1, sensor 1 | Oxygen sensor status, bank 2, sensor 1 | Oxygen sensor status, bank 2, sensor 1 | Oxygen sensor status, bank 2, sensor 2 |
| Functional range | 0 = off 1 = on |
0 = off 1 = on |
0 = off 1 = on |
0 = off 1 = on |
| Specified value | 1 1 1 | 1 1 0 | 1 1 1 | 1 1 0 |
Significance of 3 digit indications in display group 030
SIGNIFICANCE OF 3 DIGIT INDICATIONS IN DISPLAY GROUP 030
| X | X | X | Display fields 1 to 4 |
| X | Oxygen sensor control 0= not active 1 = active |
||
| X | Operational readiness of oxygen sensor 0= not active 1 = active |
||
| X | Condition of oxygen sensor heating 0= not active 1 = active |