FixVault

Switch and ABS/TCS HU/CM Harness Inspection

  1. Inspect the wiring harness between the ABS/TCS HU/CM and TCS OFF switch for short to ground.
  2. Remove the ABS/TCS HU/CM connector.
    Fig 1: Identifying ABS/TCS HU/CM Connector
    G02221179Courtesy of MAZDA MOTORS CORP.
  3. Measure the resistance between P and ground.
    • If not within the specification, inspect the harness and the TCS OFF switch.

    Resistance 

    • When switch is pressed 
      • 1-100 ohm 
    • When switch is released 
      • No continuity