Failure Conditions

EBCM Codes 64, 65 and 66 will set if an improper switch sequence is detected. The specific conditions required to set each code are as follows:

Code 64 - S2B opens before S1. Code 65 - S1 opens before S2A. Code 66 - S 1 opens before BLS closes or S2B opens before BLS closes. Code 66 may also set when the brake pedal is released, if BLS opens before S1 closes.

Air in the brake system will sometimes cause ABS Codes 64, 65 or 66 to set due to additional booster piston travel requirements.