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Open in One Side of CAN Sub Bus Line (TO 12/2010): Description

If 2 or more ECUs and / or sensors do not appear on the Techstream "CAN Bus Check" screen, one side of the CAN sub-bus line may be open. (One side of the CAN-H [sub-bus line] / CAN-L [sub-bus line] of the ECU and / or sensor is open.)

Symptom Suspected Area
2 or more ECUs and/or sensors do not appear on Techstream's "CAN Bus Check" screen.
  • One side of the CAN sub-bus line is open
  • Skid control ECU
  • Steering angle sensor
  • Yaw rate sensor
  • ECM
  • Navigation ECU*1
  • Network gateway ECU

*1: w/ Navigation system