Engine Controls - Cruise Control Won't Resume Set Speed
Classification:EL07-007
Reference:
ITB07-013
Date:
March 15, 2007
2006-2007 M35; ASCD WILL NOT RESUME SET SPEED
APPLIED VEHICLE:
2006-2007 M35 (Y50)
APPLIED VINs:
Built before JNKAY01E(*)7M304723 (2-wheel drive)
JNKAY01F(*)7M454745 (All-wheel drive)
APPLIED DATE:
Built before September 12, 2006
IF YOU CONFIRM:
The Automatic Speed Control Device (ASCD) will not resume Set speed;
^ When the vehicle has been slowed to below 20 MPH then the vehicle speed is increased to above 20 MPH
AND
^ The vehicle IS NOT equipped with Intelligent Cruise Control (ICC).
ACTIONS:
Step A: Confirm this bulletin applies:
^ Check the Current ECM Part Number.
^ Compare your Current ECM Part Number to Chart A.
If that part number does not match one in Chart A, this bulletin does not apply. Go back to ASIST for further diagnostic and repair information.
Step B: Refer to Reprogram the ECM.
CLAIMS INFORMATION
Submit a Primary Failed Part (PP) line claim using the claims coding table.
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
Before beginning this Service Procedure use CONSULT-II to make sure there are no DTCs stored in the ECM. Repairs for stored DTCs must be done before performing the ECM reprogramming. Use ASIST for DTC diagnostic and repair information.
Repairs for stored DTCs are not related to this bulletin.
Step A: Check the Current ECM Part Number (P/N)
1. With the Diagnostic Card (red/white card) in CONSULT-II and CONSULT-II turned "ON" print the ECM Part Number as follows:
[START (Nissan)] >> [ENGINE] >> [ECM PART NUMBER] >> [COPY]
2. Attach this printout to the Repair Order.
^ Figure 1 is an example of the ECM Part Number printout.
3. Check the ECM Part Number on the printout;
^ Compare your vehicle's ECM P/N to those shown under Current ECM P/N in Chart A.
^ If its in that column this bulletin applies.
A. If your vehicle's ECM P/N matches one of the Current ECM P/N's in the chart:
^ This bulletin applies. Go to Step B, Reprogramming the ECM.
B. If your vehicle's ECM P/N does not match one of the Current ECM P/N's in the chart:
^ This bulletin does not apply. Go back to ASIST for further diagnostic and repair information.
Step B: ECM REPROGRAMMING
Vehicle ECM Reprogramming Overview
^ There are four basic steps (tasks) under Step B:
1. Download reprogramming data (transfer it) from ASIST into CONSULT-II.
2. Preparation steps before reprogramming.
3. Reprogram the vehicle ECM.
4. ECM Reprogramming "Wrap-up".
NOTE:
^ For those familiar with ECM Reprogramming please review the following steps and use them as a Quick Reference for ECM reprogramming.
Step One: Download (Transfer) Data From ASIST Into CONSULT-II
1. Select vehicle model and model year (Example: M35 2006).
2. Select the correct reprogramming data:
a. Locate the specific Model Configuration (Example: VQ35 A/T 2WD).
NOTE:
Model Configuration may include items such as engine type transmission type and vehicle options such as ASCD TCS ABS etc.
b. Select (click on) the "To" number.
NOTE:
The "To" number will read: 23710-XXXXX.
3. Click on the "Add" button.
This will add the data you selected to the File(s) Selected list.
4. Write the "To" number on the Repair Order.
5. Click on Continue and follow directions to perform data transfer (download) from ASIST into CONSULT-II.
Step Two: Preparation for Reprogramming ECM
1. Connect a battery charger to the vehicle's battery. Set the charger to a low charge rate (trickle charge).
CAUTION:
For number 2 below and number 3, DO NOT connect the CONSULT-II A/C Power Supply.
2. Press [SUB MODE] (see Figure C) then:
a. From the listed items find and select [BATTERY CHARGE].
3. Check the CONSULT-II's Charger Input reading (see Figure D).
NOTE:
^ "Battery Voltage" is the voltage level of CONSULT-II's battery.
^ "Charger Input" is the voltage level of the vehicle's battery. (It must be above 12 volts.)
Step Three: Reprogram the ECM
Step Four: "Wrap-up" After Reprogramming is Finished
1. Turn the ignition switch "OFF" and CONSULT-II "OFF".
2. Wait more than 10 seconds then;
a. Turn the ignition switch "ON" for 2 second then
b. Turn the ignition switch "OFF" again for 10 seconds (see Figure E).
^ This will reset ECM "self learned" Data.
3. Start the engine and check the idle speed.
^ If idle speed is too low perform Idle Air Volume Learning (IAVL). See the appropriate Service Manual (ESM) for this procedure.
NOTE:
If the engine will not idle hold the engine RPM at about 2000, then slowly bring it down to an idle. IAVL can now be performed.
4. Confirm the engine is operating normally.
5. Make sure the MIL is OFF.
^ If the MIL comes ON use CONSULT-II with the Diagnostic (red/white) Card to erase any DTCs that may have stored during the reprogramming procedure.
Disclaimer