mm28 Anti Lock Braking Systems ABS for Trucks, Tractors, and Buses C Version

3 Troubleshooting

Additional 6S/6M and 6S/4M blink codes follow this table. Fault Code Blink Code 1 Location Cause

Solution

1-6-10 2-6-10 4-6-10 1-6-11 2-6-11 4-6-11 1-6-12 2-6-12 4-6-12

Right Front Wheel

Sensor circuit failure on steering axle.

Check sensor, sensor cable and cable connections.

Left Front Wheel

Right Front Wheel

Steering axle sensor out of adjustment.

Adjust sensors on steering axle.

1-7-0 2-7-0 4-7-0 1-7-0 2-7-0 4-7-0 1-7-1 2-7-1 4-7-1 1-7-2 2-7-2 4-7-2 1-7-3 2-7-3 4-7-3 1-7-4 2-7-4 4-7-4 1-7-5 2-7-5 4-7-5 1-8-3 2-8-3 4-8-3

Left Front Wheel

Left Rear Wheel

Erratic wheel speed from drive axle.

Check for loose wheel bearings, faulty sensor wiring connections, excessive hub runout, sensor gap that is too wide, or damage to tooth wheels on the drive axle.

Right Rear Wheel

Left Rear Wheel

Sensor circuit failure on drive axle.

Check sensor, sensor cable and cable connections.

Right Rear Wheel

Left Rear Wheel

Drive axle sensor out of adjustment.

Adjust sensors on drive axle. Check for differences between steer and drive tire sizes.

Right Rear Wheel

Check J1922 Engine Data Link, cable and connections.

N/A

Improperly wired J1922 Engine Data Link. Short circuit to power or ground, or open circuit.

10 WABCO Maintenance Manual MM-28 (Revised 03.2020)