Reprogram the Electronic Control Unit (ECU)
SPECIAL ECM REPROGRAMMING PROCEDURE FOR ECM I.D. ENTRY SERVICE PROCEDURENOTE:
^ This "Special Reprogramming Procedure" is different from the typical ECM Reprogramming procedure in that it uses a special "ECM ID ENTRY CODE". This code is provided later in this procedure.
^ Before going to the ASIST terminal, write down the vehicle's model year, transmission type, and whether it has ASCD (cruise control) or not. This will be used to determine which ECM ID CODE will be needed for the ECM reprogramming.
ECM reprogramming involves three general steps:
^ Setting up
^ Download (transfer) data from ASIST into CONSULT-II.
^ Download new data from CONSULT-II into the vehicle (Reprogram ECM).
Before starting the reprogramming procedure, use CONSULT-II and the Diagnostic Card (red/white one) to pull up any stored DTC(s). Additional repairs may be necessary if there are DTC(s) not associated with a Reprogramming bulletin. Refer to the appropriate TSB or Service Manual.
SETTING UP:
1. Install the Reprogramming Card into CONSULT-II.
^ The Reprogramming Software Card is the "orange" Card.
^ Use slot A-top slot (see Figure 1).
2. Connect the AC power supply to CONSULT-II.
3. Connect CONSULT-II to the ASIST PC with the special Ethernet cable (P/N 02002554 is printed on the cable).
A. Connect one end to CONSULT-II at the "PC port".
B. Connect the other end to the ASIST PC at the "Ethernet card" connection port.
4. Confirm the CONSULT-II date and time are correctly set as follows:
(This is necessary to provide a valid print-out for warranty claims.)
A. With the Reprogramming card in slot A, turn "ON" CONSULT-II.
B. Touch [SUB MODE].
C. Touch [SET DATE] (see Figure 2).
1) If the date is not correct, touch the [MONTH], [DAY] or [YEAR] as needed. Then adjust it by using arrow keys. Once done, press [SAVE], press [BACK], and go to step D.
2) If the date is OK, press [BACK] and go to step D.
D. Touch [SET TIME] (see Figure 2).
1) If time is not correct, touch the [HOUR], [MINUTE] or as needed. Then adjust it by using arrow keys. After you are done, press SAVE, press [BACK] and go to step 5.
2) If time is OK, press [BACK] and go to step 5.
IMPORTANT NOTE
^ If your ASIST PC is already set up for ECM reprogramming, proceed to step 5.
^ If you are unsure whether your ASIST PC has already been set up for ECM reprogramming, look in ASIST, under "CONSULT Utilities" - "CONSULT-II Info - "NISSAN" - "ECU Reprogramming". This will give you instructions for setting the Ethernet (IP) Address of the ASIST PC and CONSULT-II. You will need to do this before performing ECM reprogramming.
DOWNLOAD (TRANSFER) DATA FROM ASIST INTO CONSULT-II
5. From the ASIST PC main menu screen, select "CONSULT UTILITIES" (see Figure 3).
6. From the "CONSULT UTILITIES" screen, select "ECM / TCM DATA" (see Figure 4).
^ The "ECM Data Reprogramming" screen will be displayed (see Figure 5):
NOTE:
^ This is a special ECM reprogram that uses an ECM ID Code FOR THIS INCIDENT ONLY!
^ Step 7 is different from the typical ECM Reprogramming procedure.
7. Select the new ECM data:
A. Click on the Keypad button (see Figure 5).
B. A Keypad will appear (see Figure 6).
C. Using the digit keys on the keypad, enter the correct ECM ID Code as shown.
D. After entering the ECM ID Code, click the "Continue" button on the keypad.
^ The ECM reprogramming "data files" for the vehicle you are working on will be listed on the right side of the screen.
E. Click the "CONTINUE" button to proceed with CONSULT-II setup.
8. Turn CONSULT-II "ON" as shown in Figure 8.
9. Select Transfer files via LAN (see Figure 9).
NOTE:
If you accidentally choose a menu option other than "Transfer Files via LAN" turn CONSULT-II "OFF", and then back "ON" as shown in Figure 8 above.
Set the CONSULT-II unit down for now and go to your ASIST PC.
CAUTION:
DO NOT DISCONNECT THE ETHERNET CABLE UNTIL "COMPLETE" IS DISPLAYED AS SHOWN IN FIGURE 11.
^ If the cable is disconnected before "Complete" is displayed, you MUST restart the transfer (download) procedure; otherwise ECM damage can occur.
^ If this happens accidentally; wait for ASIST to display an "error" message, then click on "OK". Select "Backup", then return to step 6.
10. Transfer (download) data from ASIST into CONSULT-II.
A. On the ASIST screen, click on "Transfer" (see Figure 10).
^ Data transfer should take less than two minutes.
^ Transfer progress is displayed on the ASIST screen (see Figure 10).
B. Wait until the data transfer is complete (see CAUTION above).
11. When transfer is complete (see Figure 11):
A. Select (click on) "Okay", then "MAIN MENU".
B. Turn "OFF" CONSULT-II.
C. Disconnect the AC power cord and the Ethernet cable from CONSULT-II.
DOWNLOAD NEW DATA FROM CONSULT-II INTO THE VEHICLE (REPROGRAM ECM)
CAUTION:
^ Perform this operation in four (4) sections. DO NOT SKIP any of these sections.
^ They must be performed in order, 1 through 4.
Section 1: Connect a battery charger and CONSULT-II to the vehicle.
Section 2: Confirm the vehicle battery voltage and CONSULT-II "Charger Input".
Section 3: Perform ECM Reprogramming.
Section 4: Perform ECM Reprogram Confirmation.
Section 1: Connect a battery charger and CONSULT-II to the vehicle.
12. First, confirm the ignition switch is "OFF".
13. Then, connect the battery charger to the vehicle battery.
A. Set the charger at a low charge rate (trickle charge).
IMPORTANT
You must connect a battery charger to the vehicle battery when performing ECU reprogramming. Permanent ECU damage can occur if you don't. Connecting a vehicle battery charger will maintain:
^ Proper CONSULT-II power supply during reprogramming-very important if the CONSULT-II battery is low.
^ Vehicle battery voltage level-especially on late model vehicles where the cooling fans come on during reprogramming.
14. Connect CONSULT-II to the vehicle using the DLC-II cable with black Converter Box (see Figure 12).
VERY IMPORTANT:
^ Make sure the DLC-II is straight and fully plugged in to the vehicle.
^ Make sure all other DLC-II cable connections shown in Figure 12 are connected properly.
CAUTION
^ Nissan requires the use of essential tools shown in Figure 12 when performing ECM reprogramming.
^ J44200-10 "Pigtail" should not be removed from the CONSULT-II DDL Port. This "Pigtail" allows use of the stronger "quick disconnect" cable set.
^ If cables are very often changed at the DDL Port (base) of the CONSULT-II unit, cable connector pin damage may result.
^ If there is connector pin damage, ECM reprogramming may fail. Permanent ECU damage can occur.
15. Turn the ignition switch "ON" only (do not start the engine).
^ CONSULT-II will turn "ON" automatically (see Figure 13).
^ Confirm that all electrical loads* (except for the ignition) are "OFF".
* Headlights, defroster, A/C, Audio (radio), and cellular telephone, etc.
16. Roll down the driver's window part way, exit the vehicle, close the door, and hang the CONSULT II unit on the outside of the window (see Figure 14).
^ This step is necessary to make sure the CONSULT-II and DLC-II cable will not be disturbed during reprogramming.
CAUTION:
DO NOT connect the CONSULT-II AC power supply for Steps 17, 18, and 19.
Section 2: Confirm the vehicle's battery voltage and CONSULT-II "Charger Input"
17. Press [SUB MODE] (see Figure 13 on the previous page then, select [BATTERY CHARGE].
18. Check the CONSULT-II's "Charger Input" reading (see Figure 15).
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.)
NOTE:
The "Charger Input" reading MUST be above 12 volts (see Figure 15).
^ A reading above 12 volts confirms;
a. The DLC-II is properly connected to the vehicle,
b. The vehicle battery voltage is sufficient for ECM reprogramming, and
c. CONSULT-II has a sufficient power supply to perform ECM reprogramming.
^ If the vehicles battery voltage ("Charger Input") is below 12 volts, one or more of the following may be the cause:
a. The battery charger you hooked up in section 1 is not charging the battery (poor connection or it is not working).
b. The DLC-II does not have a good connection to the vehicle (not straight).
c. The DLC-II cable may have a malfunction (damaged wire or pins).
d. The CONSULT-II Converter (J44200-50 / black box) is not working correctly (see Figure 12).
CAUTION:
^ Do not attempt ECU reprogramming if the vehicle's battery voltage is below 12 volts.
^ Permanent ECU damage can occur if the vehicle battery does not maintain the minimum voltage during ECU reprogramming.
^ If "Charger Input" is above 12 volts, power from the vehicle battery will keep CONSULT-II's power supply at the correct level during reprogramming. (see Figure 15).
19. Press [BACK] twice to get to the reprogramming screen.
Section 3: Perform ECM Reprogramming Using CONSULT-II Screen
20. Press INITIATE ECU REPROGRAM (see Figure 16), then
A. Press [ECM]
B. Review the precaution.
C. Press [NEXT]
21. Press [CHECK ECM P/N] to "Confirm" the current ECM part number (see Figure 17).
NOTE:
This is the vehicle's ECM part number BEFORE reprogramming.
22. After confirming, press [COPY] to print the current ECM part number for future reference.
23. Press [BACK] to return to the "Select ECM Program" screen.
24. Select the ECM program to install (see Figure 18).
To find out which ECM program to install, refer to Chart A, B, C, D, E, or F to match the vehicle's current (original) ECM P/N with the new ECM P/N.
Chart A: 2003 MY Sentra M/T with or without ASCD
Chart B: 2003 MY Sentra A/T with or without ASCD
Chart C: 2004 MY Sentra M/T without ASCD
Chart D: 2004 MY Sentra M/T with ASCD
Chart E: 2004 MY Sentra A/T without ASCD
Chart F: 2004 MY Sentra A/T with ASCD
^ Use the "Page Down" button on the CONSULT-II screen to search for the ECM program to install.
Touch the correct screen when it appears.
25. After touching the correct screen, the "REPROGRAM START" window should appear (see Figure 19).
NOTE:
If you get an error message, refer to the ECU Reprogramming Software Operations Manual*.
* You'll find it in ASIST under:
CONSULT Utilities,
CONSULT-II info.
CAUTION DURING REPROGRAMMING:
^ Do not unplug CONSULT-II from the vehicle during reprogramming. Permanent ECM damage can occur.
^ Do not open any door or the trunk during reprogramming.
^ On some vehicles, the cooling fans may come on during reprogramming. This is a normal condition. Do not disconnect the cooling fans. Forgetting to reconnect them may cause severe engine damage. A vehicle battery charger is needed* to maintain the battery voltage level during reprogramming.
* You should have hooked up a battery charger in Section 1
26. Press [START]. See Figure 19.
^ After a few seconds, the "window" shown in Figure 20 will appear.
^ CONSULT-II will now automatically turn "OFF" its screen backlight.
^ When the screen backlight goes "OFF", ECM reprogramming has started.
NOTE:
The reprogramming process will take from 10 to 20 minutes.
CAUTION:
You must leave the vehicle and the CONSULT-II unit "undisturbed" (don't touch) until reprogramming is complete.
NOTE:
If CONSULT-II screen gives you an error message "Unmatch of Vehicle Data":
^ You tried to reprogram with an incorrect data file, or
^ You are trying to reprogram with a file that is already in the ECM.
^ The CONSULT-II screen will give you instructions on what to do.
27. When the reprogramming is complete:
^ CONSULT-II will "beep", turn the screen backlight back "ON" and automatically print out a report (see Figure 21).
^ It may take up to 20 minutes after you press [START], step 26 above.
^ Attach the print-out to the repair order for future reference.
CAUTION
During the reprogramming process, if CONSULT-I I prints "REPROGRAMMING UNEXPECTEDLY TERMINATED":
^ The ECM has been permanently damaged and will require replacement.
^ In this case, perform steps A through G.
^ Do not start the engine with the damaged ECM installed.
28. Press [END] to return to the main menu.
29. Turn the ignition switch "OFF" and CONSULT-II "OFF".
30. Make sure the accelerator pedal is fully released (all the way up), then:
a. Turn ignition switch "ON" and wait at least 2 seconds.
b. Turn ignition switch "OFF" and wait at least 10 seconds.
c. Turn ignition switch "ON" and wait at least 2 seconds.
d. Turn ignition switch "OFF" and wait at least 10 seconds.
NOTE:
Performing the above steps will reset ECM self learned Data.
Section 4: Perform ECM Reprogram Confirmation.
31. Start the engine.
32. Perform Idle Air Volume Learning (IAVL).
^ Refer to the "IdIe Air Volume Learning (IAVL) Procedure".
^ 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.
33. Confirm the engine is operating normally.
34. Make sure the MIL is OFF.
^ If it is still ON, use CONSULT-II with the Diagnostic (red/white) Card to erase any DTC's that may have stored during the reprogramming procedure.
END