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Procedures For Determining the Location of A Malfunction

System Wiring Diagram:




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

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




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

DSC HU/CM
1. Check the display of DTC U0100, U0114, U0155 and/or U2511, using the M-MDS. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM (L3 WITH TC)) Diagnostic Trouble Code Descriptions
2. Access and monitor the "PCM_MSG" and "AWD_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 WITH TC)]) Diagnostic Trouble Code Descriptions




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

AWD Control Module
1. Check the display of DTC U0100 and/or U0121 using the M-MDS. (See DTC TABLE[MULTIPLEX COMMUNICATION SYSTEM (L3 WITH TC)]) Diagnostic Trouble Code Descriptions




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

Keyless Control Module
1. Check the display of DTC U0100, U0323 and/or U2023 using the M-MDS. (See DTC TABLE[MULTIPLEX COMMUNICATION SYSTEM (L3 WITH TC)]) Diagnostic Trouble Code Descriptions




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

Instrument Cluster
1. Check the display of DTC U1900 using the M-MDS. (See DTC TABLE[MULTIPLEX COMMUNICATION SYSTEM (L3 WITH TC)] Diagnostic Trouble Code Descriptions.
2. Access and monitor the "ABS_MSG", "AWD_MSG", "PCM_MSG", "RKE_MSG" and "TPM_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 WITH TC)]) Diagnostic Trouble Code Descriptions




4. 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, DSC HU/CM, AWD control module, keyless control module)
- U2516 (Instrument cluster)

- If other DTC is present, perform the appropriate DTC inspection. (See DTC TABLE[MULTIPLEX COMMUNICATION SYSTEM (L3 WITH TC)]) Diagnostic Trouble Code Descriptions
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