Think about ABS Repair!

Misconceptions, The ABS system should be simple and robust, with the Module/ECU/Controller almost never giving any trouble.

Possible reasons for damaging an ECU:
- Spiked by careless welding, i.e MIG welding without disconnecting the battery.
-Enclosure seal damaged and with obvious sign of water ingress
-Obvious signs of mechanical damage to the enclosure.

Often the ECU will be misdiagnosed as faulty, usually because the technician is inexperienced in fault finding.
Faults are much more likely to be with connectors or sensors.

-Be careful when working near the ECU. Make sure not to damage it in any way.
-When diagnosing, first check the easiest options, and work your way out to more difficult conclusions.
-Helps to volt drop ground connections & various sensors before resorting to replacing an ECU or different parts.

ABS Wiring Diagram:


1- Discs
2- Wheel Speed sensors
3- Gear/ tone ring
4- ABS module
5- Brake Master Cylinder
6- Brake Calipers
7- Brake booster