DTC C2543: Error Passive
DTC detecting condition:
When send/receive failure of CAN communication is detected after the ignition switch is ON.
Trouble symptom:
- The steering wheel operation feels heavy.
- EyeSight steering support function does not operate. (Models with EyeSight)
Wiring diagram:
Electric power steering system Refer to WIRING SYSTEM>ELECTRIC POWER STEERING SYSTEM .
- CHECK PERIPHERALS.
Check the data link connector.
Is any other electrical part connected to the data link connector or harness?
Yes Disconnect the connection of electrical parts and perform inspection again.
No: Go to 2.
- CHECK LAN SYSTEM.
Perform the diagnosis for LAN system using the Subaru Select Monitor. Refer to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .
Is a DTC related to CAN communication detected?
Yes Perform the diagnosis according to the DTC. Refer to LAN SYSTEM (DIAGNOSTICS)>LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .
No: Go to 3.
- CHECK DTC.
Read the DTC of the power steering control module using the Subaru Select Monitor. Refer to POWER ASSISTED SYSTEM (POWER STEERING) (DIAGNOSTICS)>READ DIAGNOSTIC TROUBLE CODE (DTC) .
Is DTC C2543 a current malfunction?
Yes: Go to 4.
No System is normal. Temporary interference from noise is a possible cause.
- CHECK CONNECTOR.
Check the connecting condition of connector.
Is the connector firmly installed?
Yes: Go to 5.
No Install the connector, and check again.
- CHECK CONNECTOR.
- Turn the ignition switch to OFF.
- Disconnect the connector (B204).
Is there crimped or spread portion in connector terminal on vehicle harness side and power steering control module side?
Yes Repair or replace faulty parts.
No: Go to 6.
- CHECK HARNESS.
Check the harness related to CAN communication system.
Is there any fault in the harness?
Yes Repair or replace the harness.
No Replace the steering gearbox. Refer to POWER ASSISTED SYSTEM (POWER STEERING)>ELECTRIC POWER STEERING GEARBOX .