Low Tire Pressure Indicator Inoperative

Low Tire Pressure Indicator Inoperative

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The remote control door lock receiver (RCDLR) sends a serial data message to the instrument panel cluster (IPC) requesting low tire pressure indicator illumination.

Special Tools

J-46079 Tire Pressure Monitor Diagnostic Tool

Circuit/System Testing

1. With the scan tool, select instrument panel special functions Lamp Test. Command the instrument panel lamps ON. Verify low tire pressure indicator lamp turns ON.

- If the lamp does not turn ON, replace the IPC.

2. Using the tire pressure monitor (TPM) special tool to observe the tire pressure of the suspected faulty sensor. Check air pressure with a known accurate hand held tire pressure gage. Compare the psi reading to the display on the TPM special tool. Verify pressure readings from special tool do not differ 2 psi or more than actual tire pressure.

- If the difference is 2 psi more, replace the suspect tire pressure sensor.

3. With the scan tool, observe tire pressures in the scan tool data display. Verify pressure readings from special tool do not differ 2 psi or more than scan tool data display.

- If the difference is 2 psi more, replace the RCDLR.

Repair Instructions

* Tire Pressure Indicator Sensor Replacement (Snap In Style)
* Control Module References for IPC and RCDLR replacement, setup, and programming

Repair Verification

1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced. This would include the Tire Pressure Sensor Learn procedure.
3. Clear the DTCs.
4. Turn OFF the ignition for 60 seconds.
5. Turn ON the ignition.
6. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List - Vehicle and perform the appropriate diagnostic procedure. Diagnostic Trouble Code Descriptions