ABS Warning Light Comes ON Steady: Troubleshooting

ABS WARNING LIGHT SYMPTOM TROUBLESHOOTING REFERENCE CHART

Step	Action	YES	NO
1	DTC check Perform DTC CHECK . Is there any DTC(s)?	Go to Step 7 of ABS CHECK .	Go to Step 2.
2	ABS hydraulic unit/control module assembly power supply and ground circuit check Check that ABS hydraulic unit/control module assembly power supply circuit and ground circuit is in good condition referring to ABS HYDRAULIC UNIT/CONTROL MODULE ASSEMBLY POWER SUPPLY AND GROUND CIRCUIT CHECK . Are check results OK?	Go to Step 3.	Repair ABS hydraulic unit/control module assembly power supply or ground circuit.
3	CAN communication line circuit check Turn ignition switch to OFF position. Disconnect connectors of all control modules communicating by means of CAN. Check for proper connection to CAN communication line wire. If OK then check CAN communication line circuit between control modules for open, short and high resistance. Is each CAN communication line circuit in good condition?	Substitute a known-good combination meter and recheck. If warning light remains ON, substitute a known-good ABS hydraulic unit/control module assembly and recheck.	Repair circuit and recheck.