Emergency driving situations usually lead to someone slamming on their brakes to stop abruptly. The anti-lock brake system (ABS) helps to prevent wheel lockage in such situations so that your 2001 to 2006 Honda Accord doesn't skid. In order for the ABS to function properly, the wheel speed sensors, which send signals regarding the speed of each wheel to the ABS, must be operating.
Park your Honda Accord on a level surface, make sure the ignition is off, activate the emergency brake and place blocks behind the back tires for safety. Disconnect the negative battery cable with a terminal puller.
Raise the vehicle on the side of the wheel speed sensor's location. Remove the wheel and tire assemblies.
Disconnect the sensor harness connector. At the connector end, remove the grommets, clips or retainers in order to detach the harness. Take note of where these connect in order to install the new sensor correctly.
Unscrew the speed sensor mounting bolt and remove the sensor from the vehicle.
Obtain the new speed sensor and install it in the differential housing, with the retaining bolt loosely tightened.
Use the white line on the wires as a guide and route the wiring harness without twists or crimps. Then torque the mounting bolt to 7.2 foot pounds (9.8 Nm).
Start at the sensor end and, working your way to the connector end, attach all the clips, retainers and grommets as observed during removal. Connect the sensor wire.
Lower the vehicle safely and reconnect the negative battery cable. Refer to your owner's manual to perform an ABS system check to confirm that you installed the sensor properly.
For front wheel speed sensors, check the o-ring and spacer for damage and replace if necessary. Apply an anti-corrosive sealant to the wheel speed sensor prior to installation to prevent galvanic corrosion.
If your Honda Accord has an air bay system (SRS), the components and wiring, which are yellow, are in the same location as the front speed sensor wiring harnesses. Don't use electrical test equipment on or damage this wiring. If you do damage, the air bag may deploy or become completely inoperative. Failure to install a wheel speed sensor properly, such as contact with moving parts or stretched sensor cables, can result in ABS failure and threaten your safety. If in doubt, consult a mechanic for correct installation. Never remove the speed sensor with pliers. If corrosion causes the sensor to seize to the differential housing, use a small mallet and punch to remove it by lightly tapping the edge of the sensor ear and rocking the sensor from side to side until it comes loose. Additionally, don't hammer or bang the new wheel speed sensor into the sensor housing. You must push it in by hand. The disconnection of the negative battery cable may interfere with the on board computer function. Upon reconnection, the computer may need to go through a relearning process.