ABS ITT Mark 20 IE: Overview

ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check





Special tools and equipment
^ V.A.G 1598/21 Adapter
^ V.A.G 1594 A Adapter set
^ V.A.G 1526 A Multimeter
^ V.A.G 1921 Pliers

The test steps are valid for:
^ For vehicles on which the On Board Diagnostic (OBD) does not give any indication of the source of the malfunction, work through the complete electrical check.
^ For vehicles on which the OBD provides a direct indication of the source of the malfunction, only carry out the test steps recommended in the Diagnostic Trouble Code (DTC) table (directed entry).

Test requirements
^ Switch ignition and electrical consumers off before beginning the check (headlights, lighting, fan ...).
^ Fuses S9, S13, S178 and S179 must be OK (remove fuses from fuse holder to check).

Removing air cleaner





^ Pull connector -2- off mass air flow sensor.
^ Release spring-type clip -1- on air duct hose with pliers V.A.G 1921 and pull hose off air cleaner.
^ Remove air cleaner bolts -3- and take out air cleaner -4-.





^ Release control module -J104- connector arrow 1- and pull off-arrow 2-.





^ Connect test box V.A.G 1598/21 -1- to multipin connector of control module -J104- (-2-).

The specified values are matched to the V.A.G 1526 and are not necessarily applicable for other test units.