Ford 9L3Z-1A189-A
TPMS Sensor

Activation of the Smart Junction Box (SJB) through the Tire Pressure Monitoring System (TPMS) service and repair process becomes necessary after the sensors enter sleep mode at over 30 minutes of vehicle stationarity to conserve battery power. A single vehicle requires training position that should be placed within 1 meter distance from other vehicles with TPMS and situated away from radio frequency noise. The sensor needs another attempt to respond using the activation tool following a wheel rotation of at least a quarter turn. The SJB needs exactly 2 minutes to detect tire pressure sensors before beginning an error sequence that consists of two horn sounds and shows an untrained tire status. The TPMS indicator will light up unless sensors receive training following tire rotation on vehicles that possess different air pressure levels in front and rear wheels. Start by turning off ignition then press the brake followed by cycling the ignition three times from OFF to RUN position until it ends on RUN. After this repeat the process of turning off ignition then pressing brake pedal followed by another ignition cycling. A proper entry into training mode results in a horn sound coupled with flashing TPMS indicator while the message center shows "TRAIN LF TIRE" if the system has this feature. The Tire Pressure Monitor Activation Tool placed against the LF tire sidewall opposite the valve stem should activate the test button to produce a brief horn sound. Use the intervals between sensors to train the RF tire within two minutes after completing this procedure for the LF tire. The tire training should proceed by moving through both RR and LR tires until the message center indicates "TIRE TRAINING COMPLETE" or all horn sounds disappear after turning off the ignition. Record new TPMS sensor identifiers through the scan tool for warranty claim purposes. The SJB installation warrants new training and operators must clear existing DTCs and execute the SJB On-Demand Self Test for correct operation.

At the beginning of activating the Tire Pressure Monitoring System (TPMS) sensors users should start by turning the ignition switch to the ON position. Place the Tire Pressure Monitor Activation Tool at the left front tire sidewall directly next to the tire valve stem. The tool gives feedback by using both a flashing green light and beep sounds during sensor activation but it may be possible for feedback to not appear. You should attempt to activate the same sensor once more from a different wheel position after rotating the vehicle at least one-fourth of a turn. Then follow-up by activating sensors with available tools or by train the sensors with doors opened if necessary. The Tire Pressure Monitor Activation Tool includes a test button that needs two manual activations for sensor activation while you press it. Apply this sensor activation method to the other tires. The illumination of the TPMS indicator requires consulting the Symptom Chart for diagnosis and testing after repeating sensor activation steps for all wheels.

The Tire Pressure Monitoring System (TPMS) sensors require a driver to turn the ignition switch to ON position before they can activate. Fit the Tire Pressure Monitor Activation Tool to the left front tire sidewall close to the tire valve stem. A successful response by each tire pressure sensor produces feedback via green light flashing and audio signaling on the tool yet sensor feedback might intermittently fail to appear. You should drive your vehicle a quarter-wheel rotation to allow sensor wheel movement before repeating the sensor activation process. You should activate the sensor using the available customer tool followed by another sensor training attempt through open vehicle doors. Use the Tire Pressure Monitor Activation Tool to activate the sensor through button pressing while testing at least twice. The procedure should be repeated for every other tire on the vehicle. Continue to the Symptom Chart for additional diagnosis and testing if the TPMS indicator fails to turn off after adjusting and activating all sensors.

The Tire Pressure Monitoring System (TPMS) sensors require activation through an ignition switch set to ON position. Place the Tire Pressure Monitor Activation Tool on the outside wall of the left front tire by the tire valve stem. Every successful tire pressure sensor response triggers both a beeping noise and a flashing green light with the tool but the feedback could possibly be absent at times. You should drive the vehicle to turn wheels by at least one-fourth of a full turn before making another attempt to activate the unresponsive sensor. For sensors that do not act when tried multiple times, first check for the availability of a customer activation tool. Otherwise you can activate the sensors using the vehicle door openings. To activate the sensor press the test button of the Tire Pressure Monitor Activation Tool at minimum two times. Activate the sensor two times by repeating this procedure for all additional wheels. Contact the Symptom Chart for diagnostic procedures after checking and successfully activating all TPMS sensors because the indicator continues displaying illumination.

The Tire Pressure Monitoring System (TPMS) sensors need activation after turning the ignition switch to ON position. Insert the Tire Pressure Monitor Activation Tool at the left front tire side wall next to the valve stem. A flashing green light and a beep sound will present feedback to the tool for each successful tire pressure sensor response however the feedback might occasionally be absent. The vehicle needs to be moved while the wheels receive a minimum one-fourth rotation before trying to activate the unresponsive sensor. Proceed to activate the sensor using the customer activation tool only if remaining sensor failures occur even with vehicle doors open. Use the test button of the Tire Pressure Monitor Activation Tool to activate the sensor according to the standard procedure and perform this activation at least twice. Continue this procedure for all other tires. Continued illumination of the TPMS indicator after performing sensor adjustment and activation processes requires consultation with the Symptom Chart for additional diagnostic steps.

The Tire Pressure Monitoring System (TPMS) sensors need activation after staying dormant longer than 30 minutes to resume sending tire pressure data. A single vehicle requires TPMS sensor training in an RFI-free zone located at minimum one meter distance from other vehicles using TPMS. RFI stems from electrical motors and appliance operation together with cellular chargers and remote transmitters and power inverters and portable entertainment devices. The horn system installed with the TPMS/Vehicle Security Module (VSM) has a 2-minute sensor response time limit before it sounds two short horns to prompt another procedure attempt. A successful retraining of sensors after tire rotation is needed to stop the TPMS indicator from turning on when rear and front tires use different pressure settings. First press the brake pedal and next step is to turn the ignition switch to OFF position. Start by turning OFF then running the ignition three times to end in RUN mode before you press and release the brake pedal and turn the ignition to OFF position. The successful entry into training mode will trigger a horn sound along with a flashing TPMS indicator during the third time the ignition switch goes from OFF to RUN. A successful tire pressure sensor activation requires 6 seconds when the Tire Pressure Monitor Activation Tool needs to be kept at the valve stem. The procedure should be tried again either by wheel rotation of at least a quarter turn or by activating the customer tool if available. The system requires another attempt at training with physical vehicle door openings. During the LF tire training proceed by placing the tool on the sidewall at its valve stem then single-button pressing followed by horn verification audible within 30 seconds. Repetitions of training sessions for the RF tire should be performed within two minutes following its first session yet maintaining less than two minutes between sessions to stop TPMS/VSM time-outs. Proceed with this training method on both RR and LR tires before finishing the procedure with the last tire trained. Once the ignition is switched to OFF the system will produce no horn sound during confirmation which fails when the horn sounds twice. To complete the procedure locate all updated TPMS sensor identifiers on the TPMS/VSM through the scan tool and record them on the specified warranty claim. Clearing DTC C2780 is important to leave manufacturing mode while checking for other TPMS/VSM programming issues which must be done after new installations and before running the TPMS/VSM On-Demand Self Test.

A first step before servicing or repairing the Tire Pressure Monitoring System (TPMS) is to wake up sensors if the vehicle stays stationary for longer than thirty minutes because sensors automatically enter "sleep mode" to save battery power. Perform sensor training procedures exclusively on one vehicle which must operate in a radio frequency noise-free zone while staying more than one meter separate from other vehicles equipped with TPMS. The Tire Pressure Monitor Activation Tool needs a second activation attempt when the wheels receive at least one-fourth of rotation. A Smart Junction Box (SJB) needs two minutes to identify tire pressure sensors before it will begin sounding the horn two times at the same time as emitting the "TIRE NOT TRAINED REPEAT" warning message. This requires restarting the training process. The TPMS indicator can be prevented from turning on by training sensors immediately after conducting a tire rotation on vehicles that utilize different tire pressures between the front and rear sections. Begin the training by shutting off the ignition then pressing the brake pedal once before running the ignition to the RUN state three times and then pressing the brake pedal once more before turning off the ignition. Successful entry into training mode can be confirmed through indicator flashing along with a horn sound after performing the ignition cycle three times. Press the test button on the Tire Pressure Monitor Activation Tool that should be placed at the valve stem to activate the LF tire pressure sensor. This action will generate a short horn sound. Press the test button on the Tire Pressure Monitor Activation Tool at each tire stem one after the other but keep each sensor in sequence no longer than 2 minutes. The training completion notification appears as "TIRE TRAINING COMPLETE" in the display or occurs after turning off the ignition without horn activation. A failed training process will result in two horn sounds when trying to shut off the ignition. A scan tool should be used to find and record the new TPMS sensor identifiers which trained to the SJB on the warranty claim, also conducting an SJB On-Demand Self Test when installing a new SJDB to verify no additional issues exist.

The horn will sound twice, and the procedure must be repeated.

Use the scan tool to locate and document the updated sensor identifiers for warranty claims, clear any DTCs, and perform the On-Demand Self Test to exit manufacturing mode.