Multiplex Communication System

DIAGNOSTIC TROUBLE CODE CHART

DTCs COMBINATION TABLE

NOTE: Complete "CHECK CAN BUS LINE", to confirm that there is no disconnection the CAN main bus lines and there is no short circuit, short to +B or short to ground in the CAN bus lines. Then perform troubleshooting according to the DTC combination table.




a. Confirm the trouble mode according to the combination of output DTCs.

HINT:
- U0121/94, U0123/62, U0124/95 and U0126/63 are the DTCs in the CAN communication system.
- The table shows combinations of these DTCs.
- "V".....DTCs that are being output.
- "-"......DTCs that are not being output.




b. Confirm the trouble mode by referring to the table. Then check the parts to be replaced by referring to the table.