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Home >> Mazda >> 2007 >> B2300 Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Troubleshooting (Instrumentation/Driver Information) >> Pinpoint Test 8: Anti-Lock Brake System (Abs) Warning Indicator Is Never/Always On >> Possible Causes

Possible Causes

ANTI-LOCK BRAKE SYSTEM (ABS) WARNING INDICATOR IS NEVER/ALWAYS ON - PINPOINT TEST REFERENCE

PINPOINT TEST 8 ANTI-LOCK BRAKE SYSTEM (ABS) WARNING INDICATOR IS NEVER/ALWAYS ON
STEP INSPECTION ACTION
1 CARRY OUT THE INSTRUMENT CLUSTER INDICATOR LAMP CONTROL COMMAND USING THE SCAN TOOL
  • Key ON.
  • Enter the following diagnostic mode on the diagnostic tool:
    • Instrument Cluster Active Command
  • Select the instrument cluster warning lamps active command. Select the ABS active command on. Observe the ABS warning indicator.
  • Does the ABS warning indicator illuminate when commanded on? 
Yes Go to next step.
No Go to step 4.
2 VERIFY THE ABS MODULE OPERATION
  • Disconnect: ABS module 0413-102.
  • Key ON.
  • Observe the ABS warning indicator.
  • Does the ABS warning indicator illuminate? 
Yes Go to next step.
No Go to step 4.
3 CHECK FOR CORRECT ABS MODULE OPERATION
  • Disconnect all the ABS module connectors.
  • Check for:
    • corrosion
    • damaged pins
    • pushed-out pins
  • Connect all the ABS 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 ABS module. see ANTI-LOCK BRAKE SYSTEM (ABS) 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 the instrument cluster connectors.
  • Check for:
    • corrosion
    • damaged pins
    • pushed-out pins
  • Connect all the 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.