Engine Controls - Downhill Surge With Cruise Control ON

Classification: EL07-022C

Reference: ITB07-028C

Date: December 14, 2009

2007 G35; CRUISE CONTROL SYMPTOMS WHEN TRAVELING DOWNHILL

This bulletin has been amended. The Claims Information section has been revised. Please discard all previous versions.

APPLIED VEHICLE: 2007 G35 Sedan (V36)





APPLIED VINs and DATES

IF YOU CONFIRM:

A customer reports experiencing the sensation of very small "surges" in the vehicle when in cruise control and traveling downhill (but no noticeable actual vehicle speed fluctuations).

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.

3. If the ECM is reprogrammed and the vehicle is equipped with Intelligent Cruise Control (ICC), replace the ICC Sensor Integrated Unit / Distance Sensor.

^ Use the new ICC Distance Sensor listed in the Parts Information.

^ Refer to section CCS in the Service Manual for ICC Sensor Integrated Unit (ICC Distance Sensor) replacement 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.





PARTS INFORMATION





CLAIMS INFORMATION

SERVICE PROCEDURE

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





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. Go to Table A above.

C. 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 ITBXX-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, when complete the screen in Figure 2 appears.

4. Make sure to erase DTCs from all Systems.

NOTE:
During the reprogramming DTCs will set in several systems and must be erased.

5. If the vehicle is equipped with Intelligent Cruise Control (ICC), replace the ICC Sensor Integrated Unit / Distance Sensor.

^ Use the new ICC Distance Sensor listed in the Parts Information.

^ Refer to section CCS in the Service Manual for ICC Sensor Integrated Unit (ICC Distance Sensor) replacement information.