Open in One Side of CAN Branch Line: Description

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

If two or more ECUs and/or sensors do not appear on a Techstream "Communication Bus Check" screen, one side of the CAN branch wire may be open, (one side of the CAN-H [branch wire] / CANL [branch wire] of the ECU and/or sensor is open.)

PROBLEM SYMPTOMS CHART

Symptom	Trouble Area
Two or more ECUs and/or sensors do not appear on a Techstream "Communication Bus Check" screen.	Open in one side of CAN branch wire Brake actuator (Skid control ECU)1 Power steering ECU ECM Center airbag sensor assembly Air conditioning amplifier ECU2 Combination meter ECU Main body ECU D-CAN J/C (Junction connector) P-CAN J/C (Junction connector)

HINT:

*1: w/ABS
*2: w/ Air conditioning or PTC heater