Work sequence
- Connect Scan Tool (ST) VAG 1551 or mobile scan tool VAG 1552. Start engine and press buttons - 0 - and - 1 - to select "Engine Electronics" address word 01 (engine must be running at idling speed) → Scan Tool (ST) VAG 1551 , connecting and selecting functions .
Indicated on display
| Rapid data transfer HELP Select function XX |
- Press buttons - 0 - and - 8 - to select "Read Measuring Value Block" function 08, and press - Q - button to confirm input.
Indicated on display
| Read Measuring Value Block Input display group number XXX |
- Press buttons - 0 - , - 1 - and - 4 - to input display group number 14 - 014 - and press - Q - button to confirm input.
Indicated on display: (1-4 = display fields)
| Read Measuring Value Block 14 -> 1 2 3 4 |
- Check total number of misfires in display field 3.
- Check misfire recognition status in display field 4.
| Display fields | ||||
| 1 | 2 | 3 | 4 | |
| Display group 014: Ignition, misfire recognition | ||||
| Display | xxxx RPM | xxx % | xxx | Activated Blocked |
| Indicated | Engine speed (in 40 steps) | Engine load | Three Way Catalytic Converter (TWC) damaging misfires (total) | Misfire recognition status |
| Working range | 0-6800 RPM | 0-100 % | 0-65000 | --- |
| Specified value | 680-720 RPM | greater than 14% | 0 | activated |
| --- | --- | If the specified value is not obtained Evaluating display group 14, | ||
If the specifications are obtained:
- Press → button.
- Press buttons - 0 - and - 6 - to select "End Output" function 06 and press - Q - button to confirm input.
- Switch ignition off.
If the specified values are not attained:
- Change to display group 15 as follows:
- Press button - 3 - (VAG1551) or button ↑ (VAG1552).
Indicated on display: (1-4 = display fields)
| Read Measuring Value Block 15 -> 1 2 3 4 |
- Check misfiring in display fields 1-3.
- Check misfire recognition status in display field 4.
| Display fields | ||||
| 1 | 2 | 3 | 4 | |
| Display group 015: Ignition, misfire recognition | ||||
| Display | xxx | xxx | xxx | Activated Blocked |
| Indicated | Three Way Catalytic Converter (TWC) damaging misfires, Cyl. 1 | Three Way Catalytic Converter (TWC) damaging misfires, Cyl. 2 | Three Way Catalytic Converter (TWC) damaging misfires, Cyl. 3 | Misfire recognition status |
| Working range | 0-65000 | 0-65000 | 0-65000 | --- |
| Specified value | 0 | 0 | 0 | activated |
| If the specification is not obtained , Evaluating display groups 15 and 16 | ||||
If the specifications are obtained:
- Change to display group 16 as follows:
- Press button - 3 - (VAG1551) or button ↑ (VAG1552).
Indicated on display: (1 and 4 = display fields)
| Read Measuring Value Block 16 -> 1 4 |
- Check misfiring in display field 1.
- Check misfire recognition status in display field 4.
| Display fields | ||||
| 1 | 2 | 3 | 4 | |
| Display group 016: Misfiring recognition | ||||
| Display | xxx | xxx | xxx | Active Blocked |
| Indicated | Exhaust damaging misfires Cyl. 4 | Exhaust damaging misfires Cyl. 5 | Exhaust damaging misfires Cyl. 6 | Misfire status recognition |
| Working range | 0-65000 | 0-65000 | 0-65000 | --- |
| Specified value | 0 | 0 | 0 | activated |
| If the specification is not obtained , Evaluating display groups 15 and 16 | ||||
- Press → button.
- Press buttons - 0 - and - 6 - to select "End Output" function 06 and press - Q - button to confirm input.
- Switch ignition off.