Diagnostic Trouble Codes (DTC)

- When the control unit detects a problem and the ABS indicator light comes on, the control unit memorizes the DTC.

- The control unit has three memory registers. When a problem occurs, the control unit stores the DTC in the first memory register. If another problem occurs, or the same problem occurs again, the control unit moves the first DTC to the next memory register, and stores the second DTC in the first register. If there's a third problem occurrence, the two existing DTCs are moved up one register, and the third DTC is stored in the first register. If problems continue to occur, the oldest problem is moved out of the last register and lost, and the most recent problem is stored in the first register. When the same problem occurs three times, the same DTC is stored in all memory registers.

- The most recent DTC is indicated first, and the oldest DTC is indicated last.

- The DTCs are erased from the control unit when the ABS control unit +B2 power supply or connector is disconnected.

- The control unit's memory can be erased by disconnecting the ABS B2 fuse for more than three seconds.