2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > INTERIOR LAMP > DIAGNOSIS CODE PROCEDURES > CODE No. B1E21 Room lamp FET fail
Code No.B1E21 Roomlamp deactivated (FET failure)
| caution | Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal. |
DIAGNOSTIC FUNCTION
Diagnosis code No. B1E21 will be set when the ETACS-ECU detects an internal fault at LO side of the room lamp.
JUDGEMENT CRITERIA
Diagnosis code No. B1E21 will be set when the ETACS-ECU detects a internal fault at LO side of the room lamp.
PROBABLE CAUSES
- Damaged harness wires and connectors
- Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
M.U.T.-IIISE diagnosis code
Check if diagnosis code No. B1E1E is set in the ETACS-ECU.Is the diagnosis code set?
Carry out the troubleshooting for diagnosis code No. B1E1E. On completion, replace the ETACS-ECU when it has not been replaced as the troubleshooting process for diagnosis code No. B1E1E. This is because diagnosis code No. B1E21 cannot be erased.
Replace the ETACS-ECU.
