Procedures For Determining the Location of A Malfunction

PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM (L3, AJ)]


System Wiring Diagram

System Wiring Diagram:

PCM
1. Check the display of DTC U0101, U0121 and/or U0155, using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM (L3, AJ)].) Diagnostic Trouble Code Descriptions




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 M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM (L3, AJ)]) Diagnostic Trouble Code Descriptions
2. Access and monitor the "PCM_MSG" and "TCM_MSG" of PID using the M-MDS.
3. Referring to the PID/DATA MONITOR, confirm the display status of the PID. (See PID/DATA MONITOR TABLE[MULTIPLEX COMMUNICATION SYSTEM (L3, AJ)]) Diagnostic Trouble Code Descriptions




4. Referring to the following table, determine the malfunctioning part of the CAN system.

TCM
1. Check the display of DTC U0100, U0121 (AW6A-EL), U0140 (AW6A-EL) and/or U0415 (AW6A-EL) using the M-MDS. (See DTC TABLE[MULTIPLEX COMMUNICATION SYSTEM (L3, AJ)]) Diagnostic Trouble Code Descriptions
2. Access and monitor the "TCM_MSG" of ABS/TCS HU/CM and instrument cluster PID using the M-MDS.
3. Referring to the PID/DATA MONITOR, confirm the display status of the PID. (See PID/DATA MONITOR TABLE[MULTIPLEX COMMUNICATION SYSTEM (L3, AJ)]) Diagnostic Trouble Code Descriptions




4. 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 M-MDS.
2. Referring to the PID/DATA MONITOR, confirm the display status of the PID. (See PID/DATA MONITOR TABLE[MULTIPLEX COMMUNICATION SYSTEM (L3, AJ)]) Diagnostic Trouble Code Descriptions




3. Referring to the following table, determine the malfunctioning part of the CAN system.