Initial Inspection and Diagnostic Overview

PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM]

System Wiring Diagram

System Wiring Diagram:

PCM
1. Inspect the display of DTC U0101, U0121 and/or U0155, using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions
2. Referring to the following table, determine the malfunctioning part of the CAN system.






TCM
1. Inspect the display of DTC U0100 using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions
2. Referring to the following table, determine the malfunctioning part of the CAN system.






EHPAS Control Module
1. Inspect the display of DTC U0100 and/or U2023, using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions

CAUTION: DTC U2023 may not be cleared during engine starting even if DTC clearing is done using the M-MDS. When clearing DTC U2023, execute with the ignition switch in the ON position (Engine off).

NOTE: You may want to check which unit is malfunctioning according to Freeze Frame Data. "Electrical" > "IC Service Function" > "Freeze Frame Data".This function is supported on IDS, not PDS.

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






DSC HU/CM or ABS HU/CM
1. Inspect the display of DTC U1900, U2202 and/or U2523, using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions
2. Referring to the following table, determine the malfunctioning part of the CAN system.






Instrument Cluster
1. Inspect the display of DTC U0100, U0101, U0121, U0127 and/or U0131 using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions
2. Referring to the following table, determine the malfunctioning part of the CAN system.






3. Inspect the display of DTC U0140, U0151 and/or U0184, using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions
4. Referring to the following table, determine the malfunctioning part of the CAN system.






Climate Control Unit
1. Inspect the display of DTC U0140, U0155 and/or U0184, using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions
2. Referring to the following table, determine the malfunctioning part of the CAN system.






SAS Control Module
1. Inspect the display of DTC U1900 using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions
2. Referring to the following table, determine the malfunctioning part of the CAN system.






Information Display
1. Inspect the display of DTC U0164, U01B1 and/or U0184 using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions
2. Referring to the following table, determine the malfunctioning part of the CAN system.






PJB
1. Inspect the display of DTC U1900 using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions
2. Referring to the following table, determine the malfunctioning part of the CAN system.






Repair Procedure
1. Inspect the connector of malfunctioning module.
- If there is any malfunction, repair or replace the connector.

2. Inspect the malfunctioning wiring harnesses as follow:
- If there is any malfunction, repair or replace the wiring harnesses.
- If there is no malfunction, replace the malfunctioning module.
- Short to GND
- Short to power supply
- Twisted pair short each other
- Open circuit

3. Make sure to reconnect all disconnected connectors.
4. Clear the CAN system related DTCs using the M-MDS.
5. Verify if the CAN system related DTCs are displayed using the M-MDS.
- If the same following DTCs are present, replace the malfunctioning module.
- U0073 (PCM, TCM, EHPAS control module, TPMS control module, instrument cluster, climate control unit, SAS control module)
- U0516 (TPMS control module, climate control unit)
- U1900 (PJB)
- U2012 (DSC HU/CM, ABS HU/CM)
- U2516 (Instrument cluster)

- If other DTC is present, perform the appropriate DTC inspection. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions