Test sequence
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2006 Volkswagen Golf, 2005 Volkswagen Jetta, 2005 Volkswagen Golf, 2004 Volkswagen Jetta, and 2004 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the Scan Tool VAG1551 ( VAG1552 ) and with ignition switched on select engine electronics control unit with the "Address word" 01. (Connecting Scan Tool and selecting engine electronics control unit → Scan Tool VAG1551 , connecting .)
Indicated on display:
| Rapid data transfer HELP Select function XX |
- Press buttons 0 and 8 for the function "Read measured value block" and confirm entry with Q button.
Indicated on display:
| Read measured value block Enter display group number XXX |
- Press buttons 0 , 0 and 6 for "Display group number 6" and confirm entry with Q button.
- Observe display in display field 2.
Specification: 0 0 0
| Read measured value block 6 → 0 km/h 0 0 0 000000 255 |
- Operate brake pedal slowly.
Specification: 0 1 1 Both displays must change from 0 to 1 at same time.
| Read measured value block 6 → 0 km/h 0 1 1 000000 255 |
- Center display = Brake pedal switch
- Right-hand display = Brake light switch
- Release brake pedal slowly into rest position again.
Both displays must change from 1 to 0 again.
| Read measured value block 6 → 0 km/h 0 0 0 000000 255 |
- Press → button.
- Press buttons 0 and 6 for the function "End output" and confirm entry with the Q button.
- Switch off ignition.
If one or both displays do not change:
- Check switches or wiring to the switches: → Electrical Wiring Diagrams, Troubleshooting and Component Locations
If brake light switch is replaced:
- Press the pedal 3 times to ensure the correct adjustment of the switch.
- Verify that the switch is working properly → Brake light switch F and Brake Pedal Switch F47 , checking .