Operation 10: Diagnosis of oxygen sensor (O2S) aging after Three Way Catalytic Converter (TWC)
Display on VAS 5051:
Fig 1: Displaying On VAS 5051 - Operation 10, Diagnosis Of Oxygen Sensor Aging After Three Way Catalytic Converter (1 Of 2)
1 - Enter display group
- Enter "043" for "display group number 043" in zone -2- and confirm entry by pressing -Q- button.
Display on VAS 5051:
Fig 2: Displaying On VAS 5051 - Operation 10, Diagnosis Of Oxygen Sensor Aging After Three Way Catalytic Converter (2 Of 2)
- Activate basic setting by pressing -A- button.
- Press accelerator and brake pedal simultaneously, engine speed increases to approx. 2300 rpm.
Test conditions:
- Accelerator and brake pedal pressed simultaneously, engine runs at approx. 2300 rpm.
- Check indication in display field -4-.
DISPLAY GROUP 043: DIAGNOSIS, OXYGEN SENSOR AGING (BANK 1, SENSOR 2)
| Display zones | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 043: Diagnosis, oxygen sensor aging (bank 1, sensor 2) | ||||
| Display | xxxx rpm | xxx °C | x.xxx V | - |
| Display | Engine speed | Exhaust gas temperature | Oxygen sensor (O2S) voltage, bank 1, sensor 2 | Diagnosis status |
| Range | Test OFF Test ON B1-P2 OK B1-P2 NOK |
|||
| Specified value | approx. 2300 rpm | Above 350 °C | 0.100...0.950 volts | B1-P2 OK |
| Note: | If "B1-S2 NOK" is displayed: Check Diagnostic Trouble Code (DTC) memory. Go to DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING . | |||
If specification "B1-P2 OK" is obtained:
- Press < button.
- Perform next operation.