Selectable functions (mode) in address word 33, CARB / OBD II
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Volkswagen Jetta, 2002 Volkswagen GTI, 2001 Volkswagen Jetta, 2001 Volkswagen GTI, and 2000 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
| Function | Requirement | |||
| scan tool VAG 1551/1552 or vehicle diagnostic, testing and information system VAS 5051 functions | Engine not running, ignition on | Engine running at idle | Vehicle being driven | |
| Mode 1 | Transfer diagnostic data | yes | yes | yes |
| Mode 2 | Transfer operating conditions | yes | yes | yes |
| Mode 3 | Check DTC Memory | yes | yes | yes |
| Mode 4 | Erase DTC Memory (diagnostic data) | yes | yes | yes |
| Mode 5 | Oxygen sensor signal output | yes | yes | yes |
| Mode 6 | Test results | yes | yes | yes |
| Mode 7 | Check DTC Memory | yes | yes | yes |
| Mode 8 | EVAP check | no | yes | no |
NOTE:
- Individual measured values can be read in mode 1. Mode 1 is not recommended for the VW dealership, as this data can be read in address word 01/function 04 and function 08.
- Mode 2 shows the operating conditions at the time the malfunction was recognized.
NOTE:
- DTC memory is checked with mode 3 and DTC memory (diagnostic data) erased with mode 4.
- Mode 5 displays the statistical levels for the Oxygen Sensor O2S required by law. These levels do not have any direct reference to the Oxygen Sensor O2S diagnostic, mode 5 is irrelevant for the VW dealership.
- In mode 6 the test results of the components and systems not continually being monitored can be checked.
- In mode 7 malfunctions which do not switch on the Malfunction Indicator Lights (MIL) can be checked (MIL is not on, no malfunction in mode 3).
- In mode 8 the measured values of the leak detection system can be checked. Evaporative Emission (EVAP) canister purge regulator valve N80 and Leak Detection Pump (LDP) V144 seals the fuel tank system. A pressure (max. 70 mbar) can be created in the fuel tank system via test connection (on right side of engine compartment), and leaks can be determined with the aid of engine leak detection spray G 001 800 A1.