Tire Pressure Sensor: Testing and Inspection

Tire Low Pressure Sensor





Special Tool(s)








Removal

CAUTION: Use only special tool 204-354 anytime tire pressures are measured to be sure that accurate values are obtained.

CAUTION: Place the air chuck straight on the valve stem to inflate the tire. Do not cock the air chuck during the inflation cycle. Doing so can damage the valve stem and cause air leaks.

CAUTION: Ford recommends using a round head air chuck on tire pressure sensors; it is not recommended to use air chucks with long shanks. Doing so can cause tire pressure sensor valve stem damage and loss of tire pressure.

1. Remove the wheel and tire assembly.





2. CAUTION: If the valve stem core has been removed from the valve stem, re-install the original valve stem core. If the original valve stem core is damaged, a nickel-plated core must be installed. Failure to use a nickel-plated core will result in corrosion and the possible loss of tire pressure.

NOTE: Do not remove the valve stem core to relieve the tire pressure.

NOTE: Release the tire pressure by removing the sensor retaining nut.

With the valve stem at the 6 o'clock position, remove the sensor retaining nut and push the sensor by hand into the tire (with the cap on).





3. CAUTION: Make sure that the valve stem mounting hole remains in the 6 o'clock position while separating the beads of the tire.

Using a suitable tire machine, separate both beads of the tire from the wheel.





4. Place the wheel and tire on the turntable of the tire machine so that the valve stem hole is positioned 270 degrees from the mounting/dismounting fixture.
- Index-mark the valve stem and wheel weight positions.
- Lubricate the bead of the tire.
- Dismount the outside bead of the tire from the rim.





5. Remove the tire pressure sensor from the tire.
6. Remove and discard the grommet from the tire pressure sensor.

Installation

1. CAUTION: Over-tightening the tire pressure sensor valve stem nut can damage the tire pressure sensor, under-tightening can cause air leaks.

CAUTION: Make sure to install a new sensor grommet or an air leak can occur.

Install a new grommet on the tire pressure sensor.





2. NOTE: Do not allow the tire to rotate relative to the rim while mounting the tire.

Lubricate and mount the outside and inside bead of the tire to the rim.





3. NOTE: Tightening the nut to 5 Nm (44 inch lbs.) equals approximately 2 clockwise turns after the nut has been tightened by hand.

Push the side wall of the tire and install the tire pressure sensor. Tighten the sensor retaining nut to 5 Nm (44 inch lbs.).





4. CAUTION: Use only special tool 204-354 anytime tire pressures are measured to be sure that accurate values are obtained.

CAUTION: Place the air chuck straight on the valve stem to inflate the tire. Do not cock the air chuck during the inflation cycle. Doing so can damage the valve stem and cause air leaks.

CAUTION: Ford recommends using a round head air chuck on tire pressure sensors; it is not recommended to use air chucks with long shanks. Doing so can cause tire pressure sensor valve stem damage and loss of tire pressure.

CAUTION: Use only OEM valve caps (aluminum or plastic valve caps) with the tire pressure sensors. Do not use brass threaded valve caps with the tire pressure sensors.

Inflate the tire to the pressure specified on the Safety Certification Label located on the driver door or door pillar.
5. Install the wheel and tire assembly.
6. Train the tire pressure sensors.