Open in One Side of Bus 5 Branch Line [11/2018 - 02/2019]: Description

WARNING: This page is about a different variant/trim than selected.

When the CAN bus main lines are normal (no open, short to ground, short to +B or short between lines) and there is an ECU or sensor on the "Communication Bus Check" screen that is indicated as not communicating or whose connection status on the "Communication Bus Check" screen changes intermittently, an open in one of the wires of a CAN bus branch line is suspected.

HINT:

If there is an ECU or sensor whose connection status changes intermittently while checking the "Communication Bus Check" screen, there may be an open circuit in one of the wires of a branch line of an ECU or sensor in the bus. If an open occurs in one of the wires of a CAN branch line, it may interfere with the communication of other ECUs or sensors resulting in an incorrect state being displayed.

Symptom	Trouble Area
There is an ECU or sensor that is indicated as not communicating on the "Communication Bus Check" screen or whose connection status on the "Communication Bus Check" screen changes intermittently.	One side of CAN branch wire is open, or output signals are incomplete. Headlight ECU sub-assembly LH Headlight ECU sub-assembly RH Position control ECU assembly Main body ECU (multiplex network body ECU) Certification ECU (smart key ECU assembly) Air conditioning amplifier assembly Multiplex network door ECU*

*: w/ Power Back Door System