Engine Controls - Hesitation/Engine Stall At Low Speeds

Classification: EC11-006

Reference: NTB11-019

Date: February 28, 2011

2007-2008 350Z; ENGINE HESITATION OR STOPS RUNNING AT IDLE OR VERY LOW SPEEDS

APPLIED VEHICLES: 2007 - 2008 350Z Coupe and Roadster (Z33)

IF YOU CONFIRM

The customer reports any of the following:

^ Engine hesitation at idle or very low speeds, and/or

^ Engine speed drops lower than expected when decelerating or coming to a stop, and/or

^ Engine stops running at idle or very low vehicle speeds (parking lot maneuvers), but can be restarted.

ACTIONS
1. Refer to Step 2 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

IMPORTANT:
The purpose of ACTIONS (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire Service Procedure as it contains information that is essential to successfully completing this repair.

SERVICE PROCEDURE

1. Connect C-III to the vehicle to begin the reprogramming procedure.





CAUTION

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin applies as follows:





A. On your C-III screen, look at the Part Number column (see Figure 1).

^ If this column is blank (no part number listed), this bulletin does not apply. Close C-III and refer to ASIST for further diagnostic information.

^ If a Part Number is listed, write it on the Repair Order.





B. Compare the Part Number 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.

NOTE:
^ If there are two lines (two reprogramming options) on your C-III screen, use the one that does not have the message "Caution! Use ONLY with NTBXX-XXX".

^ If there is not a match, this bulletin does not apply. Close C-III and refer to ASIST for further diagnostic information.





3. If this bulletin applies and you have performed ECM reprogramming, the screen in Figure 2 displays when reprogramming is complete.

NOTE:
If the screen in Figure 2 does not display (reprogramming does not complete).

4. Make sure to erase DTCs from all Systems.

NOTE:
During the reprogramming, DTCs will set in several systems. DTCs must be erased from all systems.

5. 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 the ECM reprogramming are not covered by this bulletin.





CLAIMS INFORMATION