VEHICLE STABILITY CONTROL SYSTEM CHECK FOR INTERMITTENT PROBLEMS


  1. CHECK FOR INTERMITTENT PROBLEMS

    Tech Tips

    A momentary interruption (open circuit) in the connectors and/or wire harness between the sensors and ECUs can be detected using the ECU Data List function of the GTS.


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. A01EMO7E18

      Follow the directions on the GTS to display the Data List and select areas where momentary interruption should be monitored.

      Tech Tips


      • A momentary interruption (open circuit) cannot be detected for 3 seconds after the ignition switch is turned to ON (initial check).

      • If the status remains on (Error displayed), check the continuity between the ECU and the sensors, or between ECUs.

      • The Error display on the GTS remains on for 1 second after the harness signal changes from momentary interruption (open circuit) to normal.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      EFI Communication Open EFI communication open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Yaw Rate Open Yaw rate sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Deceleration Open Acceleration sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      Steering Open Steering angle sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      IG Voltage Value Decreased IG voltage value decrease detection / Error or Normal

      Error: Decrease

      Normal: Normal

      		 -
      FR Speed Sensor Voltage Open Front speed sensor RH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      FL Speed Sensor Voltage Open Front speed sensor LH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      RR Speed Sensor Voltage Open Rear speed sensor RH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      RL Speed Sensor Voltage Open Rear speed sensor LH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
    6. A01EIWJ

      While observing the screen, gently jiggle the connector or wire harness between the ECU and sensors, or between ECUs.

      Tech Tips

      The connector and/or wire harness has a momentary interruption (open circuit) if the display changes. Repair or replace the connector and/or wire harness as one of them is faulty.