2018 / ECLIPSE CROSS / EC - Workshop Manual
42 -BODY > 42B-KEYLESS OPERATION SYSTEM (KOS) > TROUBLESHOOTING > SYMPTOM PROCEDURES > M.U.T.-III CANNOT COMMUNICATE WITH KOS-ECU.
Inspection Procedure 1: Cannot communicate with KOS&OSS-ECU using the M.U.T.-IIISE.
| caution | When replacing the ECU, always check that the communication circuit is normal. |
COMMENTS ON TROUBLE SYMPTOM
KOS&OSS-ECU is communicating with M.U.T.-IIISE via CAN. Therefore, communication error of KOS&OSS-ECU is suspected.
PROBABLE CAUSES
- Malfunction of the power supply and the earth of KOS&OSS-ECU
- Malfunction of CAN bus line
DIAGNOSIS PROCEDURE
1. M.U.T.-IIISE CAN bus diagnostics.
2. Check the power supply circuit and the earth circuit to KOS&OSS-ECU.
3. Retest the system.
