Inspection steps
WARNING: This page is about a different car, the 2014 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Perform this procedure after performing until STEP 9 in "How to troubleshoot". (Refer to HOW TO TROUBLESHOOT
)
- Check DTC
- Start the engine.
- Use SSM3 to read DTC detected on CAN system.
Criteria: U0073 is output
NO: A temporary communication error may have occurred. Clear the memory.
YES: Go to Next Step
- Check CAN communication circuit
- Check CAN communication circuit. (Refer to CHECK CAN COMMUNICATION CIRCUIT
)
Criteria: No fault is found.
NO: Follow the repair procedure described in "CAN communication circuit check".
YES: Go to Next Step
- Check CAN communication circuit. (Refer to CHECK CAN COMMUNICATION CIRCUIT
)
- Check DTC
- Perform the inspection using DTC check sheet.
- Use SSM3 to read DTC detected on CAN system.
Criteria: U0073 is output
NO: System is normal.
YES: Go to Next Step
- Check control module
- Turn the ignition switch to OFF.
- Disconnect the control modules in the proper sequence.NOTE: When disconnecting ECM or brake actuator assembly, connect the resistance of 120 Ωbetween CAN-Hi and CAN-Lo to substitute a termination resistor.
- Turn the ignition switch to ON.
- Use SSM3 to read DTC detected on CAN system.
Criteria: U0073 is no longer displayed
NO: Repeat Step 4 until U0073 is not detected.
YES: Replace the control module which has been removed when no DTC is output.