DTC 1100: Left Front Wheel Speed Sensor Circuit: Notes

Fig 1: Left Front Wheel Speed Sensor Circuit Schematic

Courtesy of CHRYSLER LLC

1. When Monitored (Supply circuit): Ignition on. The Controller Antilock Brake (CAB) monitors the wheel speed circuit every 7 milliseconds (ms).
2. When Monitored (Signal circuit): Wheel speed comparison is checked at drive off or every 7 milliseconds (ms). Sensor Signal continuity is checked every 7 milliseconds. Wheel speed phase length supervision is checked every 7 milliseconds.
3. Set Condition (Supply circuit): If the CAB detects an open or shorted wheel speed sensor circuit, the Diagnostic Trouble Code (DTC) will set.
4. Set Condition (Signal circuit): If, during an ABS stop, the CAB commands any valve solenoid on for an extended length of time, and does not see a corresponding wheel speed change, the Diagnostic Trouble Code (DTC) is set. The DTC can also set if the Signal is missing or erratic.

For a complete Antilock Brake System (ABS) circuit diagram, see SCHEMATICS AND DIAGRAMS .