Lack Of Power (ITB03-015)

LACK OF POWER

TECHNICAL SERVICE BULLETIN

IF YOU CONFIRM

An Applied Vehicle has a slight lack of power during acceleration,

DETERMINE IF

Premium fuel is being used in the vehicle.

ACTIONS

If premium fuel is being used:

• Check the ECM Part Number. You will do this by performing step 2 and 3 in the Service Procedure.
• Replace the MAFS (if needed, see I35 (EARLY PRODUCTION) ECM P/N INFORMATION ).
• Perform ECM Reprogramming. This is required if the ECM Part Number (P/N) in the vehicle matches one of those listed under "Current ECM P/N" in I35 ECM P/N INFORMATION  or I35 (EARLY PRODUCTION) ECM P/N INFORMATION  .

PARTS INFORMATION

Description	P/N	Qty
Meter Assembly, Air	22680-AM600	1

CLAIMS INFORMATION

Submit a Primary Failed Part (PP) line claim using the following claims coding:

Description	PFP	OP Code	SYM	DIA	FRT
Reprogram ECM per TSB	(1)	DE98AA	AE	32	0.5 hrs
If required: Replace Airflow Meter/Bracket	---	DE18AA	---	---	(2)
(1) Reference the final CONSULT II printout and use the indicated ECM P/N as the PFP. (2) Reference the current Infiniti Warranty Flat Rate Manual and use the indicated FRT.

SERVICE PROCEDURE

1. Determine if premium fuel is being used in the vehicle:
   • If premium fuel is being used, proceed to step 2.
   • If premium fuel is not being used:
     1. Tell the customer that premium fuel should be used for improved performance.
     2. Ask the customer to use-up their regular fuel, then fill the tank with premium.
     3. Request the customer drive the vehicle with premium fuel for a few days and return to the dealer if they feel there is still a slight lack of power on acceleration.
2. Determine the vehicle's ECM Part Number. The ECM P/N is found by using CONSULT-II. Go to ECM P/N Selection.
3. Compare the vehicle's ECM P/N to those shown under Current ECM P/N in I35 ECM P/N INFORMATION  and I35 (EARLY PRODUCTION) ECM P/N INFORMATION  below:
   I35 ECM P/N INFORMATION
   
   

   I35	Current ECM P/N	ECM ID Code (2)
   2002 with TCS (1)	23710-5Y724	030105
   2002 with TCS (2)	23710-6Y321, 6Y320	030105
   (1) TCS = Traction Control System (2) IMPORTANT: You must use the ECM I.D. Code. The I.D. code is required to obtain the correct ECM data for resolving the symptom covered by this bulletin.

   I35 (EARLY PRODUCTION) ECM P/N INFORMATION
   
   

   I35 (early production)	Current ECM P/N	ECM ID Code (2)
   2002 with TCS (1)	23710-5Y723, 5Y722, 5Y721, 5Y720	030105
   (1) TCS = Traction Control System (2) Requires replacement of Mass Airflow Sensor.

   1. Check I35 ECM P/N INFORMATION : If the ECM P/N in the vehicle matches one of those listed under "Current ECM P/N":
      • Perform ECM Reprogramming, step 4.
   2. Check I35 (EARLY PRODUCTION) ECM P/N INFORMATION : If the ECM P/N in the vehicle matches one of those listed under "Current ECM P/N":
      • Replace the Mass Airflow Sensor (see Parts Information). Refer to the applicable Service Manual (ESM), section EC, for replacement procedures.
      • Perform ECM Reprogramming, step 4.
   3. If the ECM P/N in the vehicle does not match one of those listed under "Current ECM P/N" in I35 ECM P/N INFORMATION  or I35 (EARLY PRODUCTION) ECM P/N INFORMATION  :
      • This bulletin does not apply. Use the appropriate Electronic Service Manual (ESM) to further diagnose and repair the incident.
4. Reprogram the ECM. Refer to SPECIAL ECM REPROGRAMMING PROCEDURE FOR ECM I.D. ENTRY .
   IMPORTANT:

   • This I.D. code process is different from the "typical" ECM Reprogramming procedures now in use.
   • Do NOT use "Attachment A" (from other bulletins) for the reprogramming required in this bulletin.

SPECIAL ECM REPROGRAMMING PROCEDURE FOR ECM I.D. ENTRY

Perform the Download ECM Reprogramming data into CONSULT-II from ASIST procedure below.

1. Download ECM Reprogramming data into CONSULT-II from ASIST Procedure
   Remove the Diagnostics Card (blue) and install the ECM Reprogramming Software Card (orange) into slot A of CONSULT-II (see Fig 3).
   Fig 3: Installing ECM Reprogramming Card

   
2. 1. Connect the AC power supply to CONSULT-II.
   2. Connect CONSULT-II to the ASIST PC with the special Ethernet cable (P/N 02002554, printed on the cable) contained in the CONSULT-II kit.
   NOTE: Connect the special Ethernet cable to the ASIST PC by connecting it to the Ethernet card connection port located on the back of the computer. Connect the special Ethernet cable to CONSULT-II at the PC port located at the bottom end of the CONSULT-II unit.
3. Confirm the CONSULT-II date and time is correctly set as follows:
   1. With the ECM Reprogramming Software card in slot A, turn on CONSULT-II.
   2. Touch "Sub Mod".
   3. Touch "Set Date".
      • If 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.
      • If date is OK, press "Back" and go to step D.
   4. Touch "Set Time".
      • If time is not correct, touch the hour, minute or AM/PM as needed. Then adjust it by using arrow keys. Once done, press "Save", press "Back" and go to step 4.
      • If time is OK, press "Back" and go to step 4.
   Fig 4: Setting Date & Time

   
4. Set the Ethernet (IP) Address between the ASIST PC and CONSULT-II as follows:
   NOTE: If your ASIST terminal has been used to perform ECM Reprogramming before, you may skip steps "A" through "J" below and proceed to step  5.

   If you are unsure whether your ASIST terminal has been already set up for ECM Reprogramming, proceed to step "A" below.

   1. On the ASIST PC, click "START", "PROGRAMS" and "MS-DOS".
   2. When the MS-DOS Prompt window appears, after C:\WINDOWS> type: winipcfg (see Fig 5).
      Fig 5: MS-DOS Prompt Window

      
   3. Click "ENTER". The "IP Configuration" window will display the IP Address and Subnet Mask (see Fig 6).
      Fig 6: IP Configuration Window

      
   4. On CONSULT-II touch "SUB MODE", then touch "CONFIGURE ETHERNET".
   5. Compare the IP Address on the ASIST PC with the Address on the Configure Ethernet screen of CONSULT-II.
      • If the first three sets of numbers of the CONSULT-II Address match the IP Address on the ASIST PC (as noted in step 4C above) proceed with step 4I below.
      • If the first three sets of numbers of the CONSULT-II Address do not match the IP Address on the ASIST PC, proceed with step 4F below.
   6. Touch the Address number on the CONSULT-II screen (titled "Configure Ethernet"). A numeric keypad will appear (see Fig 7).
      NOTE: The IP Address for the ASIST PC you are working on will be different from the Address shown in Fig 7.
      Fig 7: IP Address

      
   7. Use the key pad to set the CONSULT-II Address to match the ASIST PC IP Address with the exception that the CONSULT-II Address number ends with 176.
   8. Touch "SAVE" and then press "COPY" to print the Address for future reference.
   9. Turn off CONSULT-II to allow the new Address to be saved in memory.
   10. On the ASIST PC close the "IP Configuration" window, close the "MS-DOS Prompt" window, then proceed with step 5.
5. Launch ASIST. From the ASIST PC main menu screen, select "CONSULT UTILITIES" (see Fig 8).
   Fig 8: Selecting "CONSULT UTILITIES"

   
6. From the "CONSULT UTILITIES" screen, select "ECM DATA" (see Fig 9).
   Fig 9: Selecting "ECM DATA"

   
7. The "ECM DATA REPROGRAMMING" screen will be displayed (see Fig 10):
   NOTE:

   • This is a special ECM reprogram and the following steps are used FOR THIS INCIDENT ONLY!
   • An ECM ID CODE must be entered to get the Reprogramming data from ASIST.
   • This is different from the typical ECM Reprogramming procedures now in use.
   • The general procedure for most other incidents will remain as usual (i.e., enter Model Year and Model to look up ECM data in ASIST).
   Fig 10: Beginning Reprogramming

   
   1. Click on the KeyPad button (see Fig 10).
   2. Using the digit keys on the keypad (see Fig 11 below), enter the correct ECM ID Code from the ECM information table in the Bulletin.
      Fig 11: Entering ECM ID Code

      
   3. Then click the "Continue" button on the keypad.
   4. From the ECM Data Reprogramming screen (see Fig 12), write down the "To" part number (like 23710-*****) on your screen that applies to your vehicle.
   5. Click the "Continue" button on the ECM Data Reprogramming screen (see Fig 12) to proceed to CONSULT-II setup.
      Fig 12: Continuing ECM Data Reprogramming

      
8. Turn on CONSULT-II as follows to access the file transfer mode:
   1. While pressing on the CONSULT-II screen with your thumb, quickly depress and release the ON/OFF switch (see Fig 13).
      NOTE: A double-beep will sound after the ON/OFF switch is quickly depressed and released.

      Release your thumb from the screen after a double-beep sound is heard.

      Fig 13: Accessing File Transfer Mode

      
   2. Select "Transfer files via Lan" (see Fig 14). Set the CONSULT-II unit down for now.
      NOTE: If you accidentally choose a menu option other than "Transfer Files via Lan", turn CONSULT-II off and restart it according to step 8A above.
   Fig 14: Selecting "Transfer Files Via LAN"

   
9. On ASIST, make sure the Ethernet (IP) Address (for CONSULT-II) displayed in the "Change IP Address" box is the same number you printed in step 4 H, then select "Continue".
   NOTE: If the Ethernet (IP) Address (for CONSULT-II) displayed in the "Change IP Address" box is not correct, turn CONSULT-II off and return to step  4 of this bulletin.
10. Data transfer will take about 1 minute and the progress of the transfer is displayed on the ASIST PC screen (see Fig 15). Wait until the data transfer is complete (see CAUTION, below).
    Fig 15: Transfer Progress Screen

    
    CAUTION: DO NOT DISCONNECT THE ETHERNET CABLE UNTIL "COMPLETE" IS DISPLAYED AS SHOWN IN Fig 16. If the cable is disconnected before "Complete" is displayed you MUST restart the download procedure. Otherwise ECM damage can occur.

    If the cable is disconnected during the transfer; close ASIST, push "Control/Alt/Delete" and select End task. Then return to step  5.

    Fig 16: Transfer Complete Screen

    
11. When transfer is complete select the "Main Menu" button on ASIST. Turn off CONSULT-II and disconnect the AC power cord and the Ethernet cable from CONSULT-II.
    IMPORTANT: Perform this operation in three segments. DO NOT SKIP any of these segments.

    • Confirm the vehicle and CONSULT-II battery voltage (blue card).
    • ECM Reprogramming (orange card).
    • ECM Reprogram Confirmation.

    Confirm the vehicle and CONSULT II battery voltage.

12. Install ECM Reprogramming data into the vehicle ECM from CONSULT-II
    Confirm the vehicle's ignition switch is "OFF".
13. Firmly connect the CONSULT-II cable to the vehicle.
14. Remove the ECM Reprogramming card from slot A of CONSULT-II and install the Diagnostics (blue) card into slot A (see Fig 3).
    CAUTION: Do not use slot B.
15. Turn the ignition switch "ON" (do not start the engine). Press CONSULT-II's ON button if it does not turn on automatically with the ignition switch (see Fig 17).
    Fig 17: Starting CONSULT-II

    
16. Press "SUB MODE" and select "BATTERY CHARGE".
17. Refer to Fig 18. The vehicle battery voltage is "Charger Input". "Battery Voltage" is CONSULT-II's battery voltage.
    • If the vehicle battery voltage ("Charger Input") is less than 11 volts, charge it properly/replace it before proceeding with ECM Reprogramming.
      Fig 18: Battery Voltage Reading

      
    • If CONSULT-II's battery ("Battery Voltage") is less than 8 volts, disconnect CONSULT-II and charge its battery before proceeding with ECM Reprogramming.
    • If the batteries are within specification, proceed to step 18.
    CAUTION: Do not attempt ECM Reprogramming if the voltage of either battery is below the specified voltage. ECM damage can occur if the batteries do not maintain the minimum voltage during the ECM Reprogramming.
18. ECM Reprogramming
    Turn the vehicle's ignition switch "OFF" and CONSULT-II off.
19. Remove the Diagnostics (blue) card from slot A of CONSULT II and install the ECM Reprogramming card (orange) into slot A (see Fig 3).
    CAUTION: Do not use slot B.
20. Make sure the DLC-II cable is still firmly plugged into the vehicle harness (see CAUTION below). Turn the ignition switch "ON" (do not start the engine). CONSULT II will turn on automatically (see Fig 19).
    NOTE: ALL Reprogramming operations are done with the DLC-II cable ONLY.
    Fig 19: CONSULT-II Start-up Screen

    
21. Confirm that all electrical loads (except for the ignition) such as headlights, defroster, A/C, Audio (radio), cellular telephone (if applicable) are "OFF".
    CAUTION: Do not unplug CONSULT-II from the vehicle while Reprogramming ECM. Do not attempt ECM reprogramming with any vehicle electrical loads "ON" except for the ignition. ECM damage can occur.
22. 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 Fig 20).
    Fig 20: Proper Placement of CONSULT-II Unit

    
23. Press "CHECK CURRENT ECM P/N" to confirm the ECM part number on the vehicle to be reprogrammed (see Fig 21).
    NOTE: This is the ECM part number BEFORE Reprogramming.
    Fig 21: Pressing "CHECK CURRENT ECM P/N"

    
24. Press "COPY" to print the current ECM part number for future reference. Then press "BACK" to return to the main menu.
25. Press "INITIATE ECM REPROGRAM" to display the available ECM data in the card.
26. Select the correct ECM program (the number you wrote down in step 7 D of this procedure) to install from the choices on the CONSULT-II screen (see Fig 22).
    Fig 22: Selecting ECM Program

    
27. The "REPROGRAM START" window should appear (see Fig 23).
    NOTE: Refer to the ECM Reprogramming Software Operations Manual for instructions on error messages.
    Fig 23: Reprogram Start Window

    
28. Press "START". After a moment the window shown in Fig 24 will appear. CONSULT-II will now turn off its screen backlight and reprogram the ECM.
    NOTE: This process will take from 10 to 20 minutes. When the Reprogramming is complete, CONSULT-II will "beep", turn the screen backlight back on and automatically print out a report.
    CAUTION: Leave the vehicle and the CONSULT-II unit undisturbed until Reprogramming is complete.
    Fig 24: Starting ECM Reprogramming

    
    CAUTION: If CONSULT-II prints "REPROGRAMMING UNEXPECTEDLY TERMINATED"

    1. Turn the ignition key "OFF", turn CONSULT-II "OFF" and DISCONNECT THE NEGATIVE TERMINAL OF THE VEHICLE BATTERY (Do not allow the vehicle to be powered up with the damaged ECM installed).
    2. Remove the damaged ECM from the vehicle.
    3. Attach the CONSULT-II printout to the repair order for future reference.
    4. Replace the damaged ECM and return to step  5 of this procedure.
29. Once ECM Reprogramming is done, CONSULT-II will print out a report (see Fig 25). Attach this to the repair order for future reference.
    Fig 25: Report Screen

    
30. Press "END" to return to the main menu. Enter the vehicle and turn the ignition switch "OFF" and CONSULT-II off. Disconnect CONSULT-II from the vehicle.
31. Wait more than 10 seconds, then turn the ignition switch "ON" for 1 second. Then, turn the ignition switch "OFF" again for 10 seconds.
32. Repeat step 32 for a total of three times (see Fig 26). This will reset ECM "self learned" values.
    Fig 26: Resetting ECM Self Learned Values

    
33. ECM Reprogram Confirmation
    Start the engine and confirm it is operating normally.