3.
Has a problem been found?
YES
a.
Repair as necessary and go to "Verification Vehicle Repair" procedure .
NO
a.
Go to "Component Inspection" procedure.
Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
YES
Repair as necessary and go to "Verification Vehicle Repair" procedure .
NO
Go to "Component Inspection" procedure.
Ignition "ON" & engine "OFF".
Measure waveform between terminal "C1" of BCM ECU and chassis ground.
Specification : Signal waveform of LIN Line communication
Is the measured waveform within specifications?
※ The existance of LIN communication waveform itself shows there’s no trouble in LIN communication circuit. If there’s any open or short cicuit in harness, no signal is detected.
YES
Go to "Power circuit Inspection " procedure.
NO
Check for open or short in signal harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Ignition "OFF".
Measure voltage value between terminal "4" of Multifunction switch and chassis ground.
Specification : Approx. 12V
Is the measured voltage within specifications?
YES
Go to "Component Inspection " procedure.
NO
Check for open or short in power harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
