Component Tests and General Diagnostics: Overview

Electrical test of ABS Bosch 5.3, ABS/EDL Bosch 5.3 and ABS/EDL with TCS Bosch 5.3

Electrical test steps from Test requirements are valid when:
- On Board Diagnostic (OBD) gives no indication of the source of the malfunction:
- Work through complete electrical test.
- On Board Diagnostic (OBD) provides a direct indication of the source of the malfunction:
- Only perform the test steps recommended in the Diagnostic Trouble Code (DTC) table (pin-pointed entry).
An overview of all the test steps in the electrical check can be found in Test requirements.

Test requirements
- Fuses -S7- and -S53- must be OK (remove fuses from fuse holder to check).
- Switch ignition and electrical consumers off before beginning test (headlights, lighting, fan, etc.),
- Disconnect multi-pin connector from ABS control module -J104- and connect test box VAG 1598 with adapter VAG 1598/27 to the wiring harness connector.

CAUTION: The specifications listed in the electrical test table are matched to the specified multimeter (Fluke 83 or equivalent) and are not necessarily valid for other test equipment.