Inspection Procedure 1: M.U.T.-III cannot communicate with EPS system. CAN communication system check


COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Damaged harness wires and connectors
  • Malfunction of the EPS-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnosis
Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?
Check and repair the ECU power supply circuit system.(Refer to .)
Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting .)