Troubleshooting Using (OBD) Via Scan Tool VAG1551 or VAS5051

ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE

Required special tools and operating instructions





^ VAG1551 Scan Tool

Notes:
^ Instead of scan tool VAG1551, vehicle system tester VAG1552 can also be used, however no printout is possible.
^ All functions of the VAG1551/1552 can also be conducted with tester VAS5051.





^ VAG1551/3 Diagnostic wire

"On Board Diagnostic" or "OBD" will detect malfunctions in the electrical/electronic components of the ABS system (electrical malfunctions in the control module and in wiring to and from the control module).
If there is a complaint, a specific troubleshooting process must be conducted:
- Switch on ignition and observe the indicator lights. Indicator lights give initial indication of what to look for.
- Adhere to test requirements. On Board Diagnostic (OBD), Test Requirements
- Connect VAG1551 and select address word 03 "Brake Electronics". Scan Tool VAG1551/1552 or VAS5051 Connecting/Selecting Function
- Check control module version and press --> button. Check Control Module Versions (Function 01)
- Check DTC memory. Check DTC Memory (Function 02)
If a malfunction has been stored, note malfunction and erase DTC memory. Erase DTC Memory (Function 05)
- End output. End Output (Function 06)
- Repair malfunction based on DTC table. ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE
With address word 03, select again "Brake Electronics." Check DTC memory and erase memory.
- End output and disconnect scan tool VAG1551.
- Switch ignition off.
- Make sure that all connectors are connected properly.
Conduct a test drive to check the function of the system:
^ Watch for traffic conditions and conduct an ABS - controlled brake application. Control is felt through pulsing at the brake pedal.
^ During the drive, the indicator light can not light up. If indicator light lights up during test drive, repeat troubleshooting procedures.

Notes: If during the drive the connector is removed from the control module, the risk exists that an unfounded malfunction entry is stored in the DTC memory of a control module.