Diagnosis Item 12:
Diagnose the lines between the joint connectors (CAN4 and CAN3).
caution
When servicing a CAN bus line,
earth yourself by touching a metal object such as an unpainted water pipe. If you fail to do,
a component connected to the CAN bus line may be broken.
FUNCTION
The diagnostic result demonstrates that "diagnose the lines between the joint connectors
(CAN4 and CAN3)" when the M.U.T.-III checks the periodically sent data from each ECU and cannot
receive the engine-ECU data.
TROUBLE JUDGEMENT CONDITIONS
M.U.T.-III judges the trouble when the periodically sent data from engine-ECU cannot be
received.