Engine Controls - Delayed Throttle Response At Engine Start-Up
Classification:EC12-031
Reference:
NTB12-1O8
Date:
November 28, 2012
2013 VERSA SEDAN WITH A/T; DELAYED THROTTLE RESPONSE AT ENGINE START
APPLIED VEHICLES:
2013 Versa Sedan (N17) - with 4-speed A/T ONLY
APPLIED VIN & DATE:
Vehicles built before: 3N1CN7AP(*)D(*)296352 // October 24, 2012.
IF YOU CONFIRM
For the first 4-6 seconds after starting the engine, throttle response is delayed when pressing the accelerator pedal in any gear position.
ACTION
1. Refer to step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on.
2. If this bulletin applies, reprogram the ECM.
CLAIMS INFORMATION
Submit a Primary Part (PP) line claim using the claims coding shown.
SERVICE PROCEDURE
NOTE:
^ Most instructions for reprogramming with CONSULT-III plus (C-III plus) are displayed on the CONSULT PC screen.
^ Take the vehicle for a 10 minute drive in order to meet the following Idle Air Volume Learn (IAVL) conditions:
> Engine coolant temperature: 70 -100°C (158 -212°F)
> Battery voltage: More than 12.9V (At idle)
> Transmission: Warmed up
^ After reprogramming is complete, you will be required to perform Throttle Valve Closed Position, Idle Air Volume Learn, Accelerator Closed Position, and DTC erase.
CAUTION
^ Connect the battery charger to the vehicle battery.
If the vehicle batter voltage drops below 12.0V or above 15.5V during reprogramming, the ECM may be damaged.
^ Be sure to turn OFF all vehicle electrical loads.
If a vehicle electrical load remains ON, the ECM may be damaged.
^ Be sure to connect the AC Adapter.
If the CONSULT PC battery voltage drops during the reprogramming, the process will be interrupted and the ECM may be damaged.
^ Turn off all external Bluetooth(R) devices (e.g., cell phones, printers, etc.) within range of the CONSULT PC and the VI. If Bluetooth(R) signal waves are within range of the CONSULT PC during reprogramming, reprogramming may be interrupted and the ECM may be damaged.
1. Connect the CONSULT PC to the vehicle to begin the reprogramming procedure.
2. Open ASIST on the CONSULT PC and start C-III plus.
3. Wait for the plus VI to be recognized / connected.
^ The serial number will display when the plus VI is recognized / connected.
4. Select Re/programming, Configuration.
5. Follow the on-screen instructions and navigate the C-III plus to the screen shown in Figure 2.
6. When you get to the screen shown in Figure 2, confirm this bulletin applies as follows.
A. Find the ECM Part Number and write it on the repair order.
NOTE:
This is the current ECM Part Number (P/N).
B. Compare the P/N you wrote down to the numbers in the Current ECM Part Number column in Table A.
^ If there is a match, this bulletin applies. Continue with the reprogramming procedure.
^ If there is not a match, this bulletin does not apply. Close C-III plus and refer to ASIST for further diagnostic information.
7. Follow the on-screen instructions to navigate C-III plus and reprogram the ECM.
NOTE:
^ In some cases, more than one new P/N for reprogramming is available.
> In this case, the screen in Figure 3 displays.
> Select and use the reprogramming option that does not have the message "Caution! Use ONLY with NTBXX-XXX".
^ If you get this screen and it is blank (no reprogramming listed), it means there is no reprogramming available for this vehicle. Close C-III plus and refer back to ASIST for further diagnosis.
IMPORTANT:
If C-III plus locks up or freezes at this point or displays "cannot complete reprogramming, CONSULT PC is set up with User Rights. Reprogramming can be completed with Administrator log in", the TOUGH BOOK settings need to be changed so that Users have full access rights. See your Dealership's IT System Administrator for details.
8. When the screen in Figure 4 displays, reprogramming is complete.
NOTE:
If the screen in Figure 4 does not display (reprogramming does not complete), refer to ECM Recovery.
9. Disconnect the battery charger from the vehicle.
10. Select Next.
NOTE:
^ In the next steps, you will perform Throttle Valve Closed Position, Idle Air Volume Learn, Accelerator Closed Position, and DIG erase.
^ These operations are required before C-III plus will provide the final reprogramming confirmation report.
ECM Recovery:
Do not disconnect plus VI or shut down C-III plus if reprogramming does not complete.
If reprogramming does not complete and the"!?" icon displays as shown in Figure 5:
^ Check battery voltage (12.0-15.5 V).
^ Ignition is ON, engine OFF.
^ External Bluetooth� devices are OFF.
^ All electrical loads are OFF.
^ Select retry and follow the on screen instructions.
^ "Retry" may not go through on first attempt and can be selected more than once.
If reprogramming does not complete and the "X" icon displays as shown in Figure 6:
^ Check battery voltage (12.0 - 15.5 V).
^ CONSULT A/C adapter is plugged in.
^ Ignition is ON, engine OFF.
^ Transmission is in Park.
^ All C-III plus / VI cables are securely connected.
^ All C-III plus updates are installed.
^ Select Home, and restart the reprogram procedure from the beginning.
11. Follow the on-screen instructions to perform the following:
^ Throttle Valve Closed Position
^ Idle Air Volume Learn (IAVL)
NOTE:
^ Listed below are common conditions required for IAVL to complete.
^ If IAVL does not complete within a few minutes, a condition may be out of range.
^ Refer to the appropriate Electronic Service Manual (ESM) for specific conditions required for the vehicle you are working on.
> Engine coolant temperature: 70 - 100° C (158 - 212° F)
> Battery voltage: More than 12.9V (At idle)
> Selector lever: P or N
> Electric load switch: OFF (Air conditioner, headlamp, rear window defogger)
> Steering wheel: Neutral (Straight-ahead position)
> Vehicle speed: Stopped
> Transmission: Warmed up
^ Accelerator Pedal Close Position Learning
^ Erase DTCs
12. When the entire reprogramming process is complete, the screen in Figure 7 will display.
13. Verify the before and after part numbers are different.
14. Print a copy of this screen (Figure 7) and attach it to the repair order for warranty documentation.
15. Select Confirm.
16. Close C-III plus.
17. Turn the ignition OFF.
18. Disconnect the plus VI from the vehicle.
19. Test drive the vehicle and make sure it operates correctly and the MIL is OFF.
^ If the MIL comes ON, go back to ASIST for further diagnostic information.
^ Diagnosis and repairs beyond ECM reprogramming are not covered by this bulletin.
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