Check whether any metallic foreign material has adhered to the projection at the ABS sensor tip. Remove any foreign material. Also check whether the pole piece is damaged. Replace it with a new one if it is damaged.
NOTE: The projection can become magnetized due to the magnet inside the ABS sensor, causing foreign material to easily adhere to it. The projection may not be able to correctly sense the wheel rotation speed if foreign matter is on it or if it is damaged.
Measure the resistance between the ABS sensor terminals.
1. Standard value: 1.24 - 1.64 kΩ
If the internal resistance of the ABS sensor is not within the standard value, replace it with a new ABS sensor.

Fig 1: Measuring Resistance Between ABS Sensor Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Remove all connections from the speed sensor. The circuit should be open between terminals (1) and (2) and the body of the ABS sensor. If the circuit is not open, replace with a new ABS sensor.
Check the ABS sensor cable for breakage, damage or disconnection. Replace with a new one if a problem is found.
NOTE: When checking for cable damage, remove the cable clamp part from the body and then gently bend and pull the cable near the clamp.

Fig 2: Checking ABS Sensor Cable For Breakage, Damage Or Disconnection

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Abs Sensor Check