A Symptom List

Important: The following steps must be completed before using the symptom tables.

1. Perform A Diagnostic System Check - Tire Inflation Monitoring before using the Symptom Tables in order to verify that all of the following are true:
^ There are no DTCs set.
^ The control module(s) can communicate via the serial data link.

2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
^ Tire Inflation Monitoring System Description
^ Tire Inflation Monitoring System Circuit Description

Visual/Physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the antilock brake system. Refer to Checking Aftermarket Accessories in Wiring Systems.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
^ Inspect the master cylinder reservoir for the proper brake fluid level.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent and Poor Connections in Wiring Systems.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
^ Low Tire Pressure Indicator Always On (w/UB3)
^ Low Tire Pressure Indicator Inoperative (w/UB3) Low Tire Pressure Indicator Does Not Reset (w/UB3)