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Home >> Mazda >> 2007 >> B2300 Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Troubleshooting (Instrumentation/Driver Information) >> Pinpoint Test 24: The Tire Pressure Monitoring System (TPMS) Warning Indicator Is Never/Always On >> Possible Causes

Possible Causes

TIRE PRESSURE MONITORING SYSTEM (TPMS) WARNING INDICATOR IS NEVER/ALWAYS ON - PINPOINT TEST REFERENCE

PINPOINT TEST 24 THE TIRE PRESSURE MONITORING SYSTEM (TPMS) WARNING INDICATOR IS NEVER/ALWAYS ON
STEP INSPECTION ACTION
1 RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND INSTRUMENT CLUSTER SELF-TESTS
  • Retrieve the recorded DTCs from the instrument cluster continuous and on-demand self-tests.
  • Is DTC U2023 retrieved? 
 Yes CLEAR the DTCs. REPEAT the self-test. If DTC U2023 is retrieved again, go to step 3. For all other instrument cluster DTCs, See INSTRUMENT CLUSTER DIAGNOSTIC TROUBLE CODE (DTC) INDEX , .
No Go to next step.
2 CARRY OUT THE INSTRUMENT CLUSTER INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL
  • Enter the following diagnostic mode on the scan tool:
    • Instrument Cluster Active Command
  • Select the instrument cluster indicator lamp control active command. Select the TPMS indicator active command on then off again. Observe the TPMS warning indicator.
  • Does the TPMS warning indicator illuminate when commanded on and turn off when commanded off? 
 Yes Go to next step.
No Go to step 4.
3 CHECK FOR CORRECT TPMS MODULE OPERATION
  • Disconnect all the TPMS module connectors.
  • Check for:
    • corrosion
    • damaged pins
    • pushed-out pins
  • Connect the all the TPMS module connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present? 
 Yes Install a new TPMS module. See TIRE PRESSURE MONITORING SYSTEM MODULE , . Test the system for normal operation.
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
  • Disconnect all instrument cluster connectors.
  • Check for
    • corrosion
    • damaged pins
    • pushed-out pins
  • Connect all instrument cluster connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present? 
 Yes Install a new instrument cluster. see INSTRUMENT CLUSTER . Test the system for normal operation.
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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