EBD Warning Light (Brake Warning Light) Comes ON Steady: Troubleshooting

EBD WARNING LIGHT SYMPTOM TROUBLESHOOTING REFERENCE CHART

Step	Action	YES	NO
1	Parking brake and brake fluid level check Make sure that: Parking brake is completely released. Brake fluid level is upper than the minimum level. Are the check results OK?	Go to Step 2.	Release parking brake completely and/or replenish brake fluid.
2	ABS warning light operation check Turn ignition switch to ON position. Does ABS warning light come on steady?	Perform ABS WARNING LIGHT COMES ON STEADY previously outlined.	Go to Step 3.
3	Parking brake switch circuit and brake fluid level switch circuit check Release parking brake completely, and replenish brake fluid. Disconnect BCM connectors with ignition switch turned OFF. Measure resistance between each parking brake switch circuit, brake fluid level switch circuit. Are resistance 8Ω?	Go to Step 4.	Check each applicable circuit for short to vehicle body ground. If OK then check parking brake switch and/or brake fluid level switch.
4	DTC check of BCM Connect scan tool to DLC with ignition switch turned OFF. Turn ignition switch to ON position and check DTC of BCM. Is there DTC U0073?	Go to DTC U0073 (NO. 0073): CONTROL MODULE COMMUNICATION BUS OFF .	Go to Step 5.
5	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 EBD warning light remains OFF, substitute a known-good BCM and/or ABS hydraulic unit/control module assembly and recheck.	Repair CAN communication line circuit.