DTC P1616: Unregistered Keyless Start Control Module (for Vehicle with Keyless Start System): Troubleshooting

Step	Action	Yes	No
1	Diagnostic Trouble Code (DTC) confirmation Clear DTC(s) referring to DTC CLEARANCE . Turn ignition switch to OFF position. Check if any DTC is detected referring to DTC TABLE . Is DTC P1616 still detected?	Go to Step 2.	The troubleshooting is completed.
2	Registration of the ignition key Clear DTC referring to DTC CLEARANCE . Register the transponder code in the transponder in the ignition key with ECM referring to REGISTRATION OF THE IGNITION KEY . Was it possible to register the ignition key (transponder code) in ECM?	Go to Step 3.	Go to Step 4.
3	Keyless start system operation check Start engine using keyless start system. Does engine start?	The troubleshooting is completed.	Check if any DTC is detected by ECM. If detected, perform the troubleshooting referring to the corresponding flowchart.
4	Diagnostic Trouble Code (DTC) check Check ECM for DTC referring to DTC CHECK . Are DTC P1618 and/or P1615 detected other than P1616?	Go to troubleshooting for applicable DTC.	Substitute a known-good ECM and recheck.