HINT
It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check CAN
MS Bus Wire inspection.
Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus
Wire inspection.
NG -- REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 6 J/C - MAIN BODY ECU)
OK -- REPLACE MULTIPLEX NETWORK BODY ECU (MAIN BODY ECU) See: Power and Ground Distribution/Power
Distribution Module/Service and Repair/Removal
Up to 08/2009
NETWORKING: CAN COMMUNICATION SYSTEM: U1100: Lost Communication with Seat Belt Control ECU
U1100 - Lost Communication with Seat Belt Control ECU
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
* Turn the engine switch off before measuring the resistances between CAN bus main wires and between CAN bus branch
wires.
* Turn the engine switch off before inspecting CAN bus wires for a ground short.
* After the engine switch is turned off, check that the key reminder warning system and light reminder warning system are not
operating.
* Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other
switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.
HINT
* Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This
communication will cause the resistance value to change.
* Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring
due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may
help determine the cause of the malfunction.
PROCEDURE
1. RECONFIRM DTC OUTPUT
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