When A TCU Needs to Be Replaced

When a TCU Needs To Be Replaced

NOTE:
^ Each TCU is registered to a specific Vehicle Identification Number (VIN). TCUs cannot be "swapped" between vehicles.

^ The replacement TCU must come from Nissan North America parts supply.

1. Turn OFF the TCU using C-III plus.

^ Perform steps 1-15 of the Turning ON the TCU During PDI procedure.

> Instead of selecting "ON" in step 11, select "OFF.

> In step 15, confirm the current status is displayed as "Off."

> After step 15, select End.





2. Select SAVE VIN DATA.

3. Select Start.





4. Select START.

NOTE:
If the VIN data cannot be saved, you will have to manually enter the VIN later in this procedure.





5. Select End.

6. Remove the TCU from the vehicle.

^ See the AV section of the Electronic Service Manual (ESM) for removal instructions.

Steps 7 and 8 must be performed AFTER the original TCU is removed from the vehicle and BEFORE the replacement TCU is installed.

7. Collect and have ready the following information:





a) VIN.

b) International Mobile Equipment Identity Number (IMEI) of the original TCU. This number is located on the TCU.

c) IMEI Number of the replacement TCU. This number is located on the TCU.

d) Serial Number of the replacement TCU. This number is located on the TCU.





8. Call the Infiniti Connection Call Center. Press "4" and listen for additional applicable dealer prompts. (Hours of operation are shown above.)

During this call:

^ You will be asked for your name, dealership name, and all of the information collected in step 7.

^ The Call Center agent will deactivate the original TCU and activate the replacement TCU.

IMPORTANT:
Step 8 MUST be performed to activate the replacement TCU. If it is not performed the TCU will not be able to communicate with the Infiniti Connection Data Center.

9. Install the replacement TCU into the vehicle.

^ See the AV section of the ESM for installation instructions.

10. Perform steps 1-7 of the Turning ON the TCU During PDI procedure.





11. Select WRITE VIN DATA.

NOTE:
If VIN DATA could not be saved in step 4, proceed to Manually Enter VIN Data ( if needed ).

12. Select Start.





13. Select Start.





14. Select End.

15. Turn ON the TCU.

^ Perform steps 8-15 of the "Turning ON the TCU During PDI" procedure.