System Initialization
System initialization starts when the key is turned to "RUN". At this point, the Controller Antilock Brake (CAB) performs a complete self-check of all electrical components in the antilock brake systems. The ABS, brake warning lamps, TRAC OFF and TRAC (if equipped) will illuminate for 4 seconds with ignition on.
AT 20 km/h (12 mph) a dynamic test is performed. This will momentarily run the pump/motor. If during the dynamic test, the driver has his/her foot on the brake pedal, he/she may feel the test through brake pedal pulsations. This is a normal condition.
If any component exhibits a diagnostic trouble code during system initialization or dynamic check, the CAB will illuminate the ABS and TRAC off (if equipped) warning indicators.