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Procedures For Determining the Location of Malfunction

PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION

System Wiring Diagram:




System Wiring Diagram

PCM
1. Inspect the display of DTC U0101, U0121 and/or U0155, using the WDS or equivalent. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions




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

TCM
1. Inspect the display of DTC U0100 using the WDS or equivalent. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions




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

DSC HU/CM or ABS HU/CM
1. Inspect the display of DTC U0100 (DSC), U0101 (DSC), U0155 (DSC), U1900 and/or U2023, using the WDS or equivalent. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions




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

Keyless Control Module
1. Inspect the display of DTC U0100, U0323 and/or U2023 using the WDS or equivalent. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions




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

Steering Angle Sensor
1. Inspect the display of DTC U1900 using the WDS or equivalent. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions




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

Instrument Cluster
1. Inspect the display of DTC U0100, U0101, U0121, and/or U0214, using the WDS or equivalent. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].) Diagnostic Trouble Code Descriptions




2. Referring to the given 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 WDS or equivalent.
5. Verify if the CAN system related DTCs are displayed using the WDS or equivalent.
- If the same given DTCs are present, replace the malfunctioning module.
- U0073 (PCM, TCM, DSC HU/CM, ABS HU/CM, keyless control module, instrument cluster)
- U2516 (steering angle sensor)

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