DTC P1625: Immobilizer Antenna Error: Troubleshooting

Step	Action	Yes	No
1	Diagnostic Trouble Code (DTC) confirmation Clear DTC(s) referring to DTC CLEARANCE . Turn the ignition switch to OFF position. Check if any DTC is detected referring to DTC CHECK . Is DTC P1625 still detected?	Go to Step 2.	The troubleshooting is completed.
2	ICM replacement and Diagnostic Trouble Code (DTC) check Replace ICM referring to IMMOBILIZER CONTROL MODULE (ICM) REMOVAL AND INSTALLATION . Check if DTC P1625 is still detected referring to DTC CHECK . Is DTC P1625 still detected?	Replace ECM with new one referring to ECM (ENGINE CONTROL MODULE) REMOVAL AND INSTALLATION , and then perform PROCEDURE AFTER ECM REPLACEMENT .	The troubleshooting is completed.