Low Tire Pressure Indicator Does Not Reset
Low Tire Pressure Indicator Does Not Reset
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.
Circuit/System Description
The tire pressure control module enters initialization mode and performs initialization automatically when the tire pressure control module receives a signal from the reset switch. If the control module receives a signal, the tire pressure warning light will blink 3 times.
Reference Information
Description and Operation
Tire Pressure Monitor Description and Operation (Description and Operation)
Schematic Reference
Tire Pressure Monitoring System Schematics ([1][2]Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
Scan Tool Reference
Control Module References (Programming and Relearning) for Scan Tool Information
Circuit/System Verification
1. Ignition ON, with the scan tool, enter tire pressure monitor test mode.
2. Press the tire pressure warning reset switch. Tire pressure warning indicator should illuminate.
3. Disconnect the harness connector at the tire pressure warning reset switch.
4. Test for less than 1 ohm between terminal 1 and terminal 2 of the reset switch with the switch in the On position.
• If not within the specified range, replace the tire pressure reset switch.
5. Test for infinite resistance between terminal 1 and terminal 2 of the reset switch with the switch in the Off position.
• If not within the specified range, replace the tire pressure reset switch.
6. Disconnect the harness connector at the Tire Pressure Control Module.
7. Test for less than 1 ohm between the reset switch signal circuit terminal 1 and terminal 1.
• If greater than the specified value, test the reset switch signal circuit for an open/high resistance.
8. Test for infinite resistance between the reset switch signal circuit terminal 1 and ground.
• If less than the specified value, test the reset switch signal circuit for a short to ground.
9. Test for less than 1 ohm between the reset switch ground circuit terminal 2 and ground.
• If greater than the specified value, test the reset switch ground circuit for an open/high resistance. If circuit tests normal, replace the tire pressure control module.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Tire Pressure Indicator Sensor Replacement (Service and Repair)
* Tire Pressure Indicator Sensor Learn (Testing and Inspection)
* Control Module References (Programming and Relearning) for replacement, programming, and setup.