Information Bus: Testing and Inspection
PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTIONMULTIPLEX COMMUNICATION SYSTEM
Outline
- If the controller area network (CAN) system is malfunctioning, read the DTCs of the following modules, using the SST (WDS or equivalent) to determine the malfunctioning system.
- PCM
- ABS/TCS HU/CM
- TCM
- Instrument cluster
System Wiring Diagram:
System Wiring Diagram
PCM
1. Check the display of DTC U0101, U0121 and/or U0155, using the SST (WDS or equivalent).
2. Referring to the following table, determine the malfunctioning part of the CAN system.
ABS/TCS HU/CM
1. Check the display of DTC U0100, U0101 and/or U0155, using the SST (WDS or equivalent).
2. Access and monitor the "PCM_MSG" and "TCM_MSG" of PID using the SST (WDS or equivalent).
3. Referring to the PID/DATA MONITOR, confirm the display status of the PID.
4. Referring to the table, determine the malfunctioning part of the CAN system.
TCM
1. Check the display of DTC U0100, U0121, U0140 and/or U0415 using the SST (WDS or equivalent).
2. Referring to the following table, determine the malfunctioning part of the CAN system.
Instrument Cluster
1. Access and monitor the "ABS_MSG", "PCM_MSG" and "TCM_MSG" of PID using the SST (WDS or equivalent).
2. Referring to the PID/DATA MONITOR, confirm the display status of the PID.
3. Referring to the following table, determine the malfunctioning part of the CAN system.