Tire Pressure Monitoring System (TPMS) — 2016 workshop reference 2576

DTC	Description	Fault Trigger Conditions
	B124D:02 Tire Pressure Sensor: General Signal Failure	Set by the BCM in continuous memory when 1, 2 or 3 of the tire pressure sensors are faulted, not communicating with the RTM or when sensor data is not received by the BCM from the RTM.

DTC

Description

Fault Trigger Conditions

B124D:02 Tire Pressure Sensor:

General Signal Failure

Set by the BCM in continuous memory when 1, 2 or 3 of the tire pressure sensors are faulted, not communicating with the RTM or when sensor data is not received by the BCM from the RTM.

Possible Sources

Radio Frequency Interference (RFI) One or more TPMS sensors not trained TPMS sensor(s)

Visual Inspection and Diagnostic Pre-checks

Inspect for customer electronic devices, such as cell phone chargers or GPS units. Inspect for Non-Original Equipment Manufacturer (OEM) wheels or run-flat tires. Verify horn operation. Verify spare tire is not in use.

PINPOINT TEST B : B124D:02

B1 CHECK THE BCM (BODY CONTROL MODULE) TPMS (TIRE PRESSURE MONITORING SYSTEM) STATUS (TPMS_STATUS) PID (PARAMETER IDENTIFICATION) AND SENSOR IDENTIFIERS

Ignition ON. Using a diagnostic scan tool, view and record the following BCM Parameter Identifications (PIDs):

Left Front Tire Transmitter Identifier (TPM_S_ID_LF) Right Front Tire Transmitter Identifier (TPM_S_ID_RF) Left Rear Tire Transmitter Identifier (TPM_S_ID_LRO) Right Rear Tire Transmitter Identifier (TPM_S_ID_RRO)

View the BCM TPMS_STATUS PID.

Does the BCM TPMS_STATUS PID display SENSOR FAULT?

Yes	GO to B2
No	If the TPMS_STATUS PID displays SYSTEM FAULT, GO to Pinpoint Test A

B2 CARRY OUT THE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSOR TRAINING PROCEDURE

Train all 4 TPMS sensors. REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).

Did all of the TPMS sensors train and did the horn sound when each sensor was trained?

Yes	Using a diagnostic scan tool, LOCATE the updated TPMS sensor identifiers trained to the BCM. COMPARE these values to those recorded prior to the TPMS sensor training procedure. Disregarding sensor position, any sensor identifiers not matching those retrieved from the module were changed, but not retrained. The sensors are now trained to the vehicle, diagnosis is complete. DOCUMENT all TPMS sensor identifiers on the applicable warranty claim.
No	GO to B3

Yes

Using a diagnostic scan tool, LOCATE the updated TPMS sensor identifiers trained to the BCM. COMPARE these values to those recorded prior to the TPMS sensor training procedure. Disregarding sensor position, any sensor identifiers not matching those retrieved from the module were changed, but not retrained. The sensors are now trained to the vehicle, diagnosis is complete. DOCUMENT all TPMS sensor identifiers on the applicable warranty claim.

GO to B3

B3 ATTEMPT TO TRAIN THE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSORS AGAIN

Source reference 2576

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.