Emissions/Engine Controls - MIL ON/DTC's P0465/P0442
Classification:EC02-025e
Reference:
NTB02-115e
Date:
October 16, 2003
MIL "ON" DTC P0442 (EVAP SMALL LEAK) AND/OR DTC P0456
(EVAP VERY SMALL LEAK)
This bulletin amends NTB02-115d. This version contains additional Applied VIN and Applied Date information. Please discard all paper copies of the earlier bulletin.
APPLIED VEHICLES:
2003 350Z (Z33)
2003 Murano (Z50)
2004 Maxima (A34)
2004 Quest (V42)
APPLIED VINS:
2003 350Z (Z33), built before:
JN1AZ34D(*)3T 116330 or
JN1AZ34E(*)3T 018708
2003 Murano (Z50), built before:
JN8AZ08T(*)3W 116839
JN8AZ08W(*)3W 229042
2004 Maxima (A34), built before:
1N4BA41E(*)4C 858455
2004 Quest (V42), built before:
5N1BV28U(*)4N 326128
APPLIED DATES:
2003 350Z (Z33), built before April 10, 2003
2003 Murano (Z50), built before April 19, 2003
2004 Maxima (A34), built before September 28, 2003
2004 Quest (V42), built before October 15, 2003
IF YOU CONFIRM:
An Applied Vehicle has the MIL "ON" with one or both of the following DTC's stored in the ECM:
^ P0442 EVAP Small Leak
^ P0456 EVAP Very Small Leak
ACTIONS:
^ Confirm this bulletin applies.
^ Perform CONSULT-II Self-Diagnosis (repair as needed).
^ ECM Part Number Check to determine if this bulletin applies.
^ ECM Reprogramming (needed if a match is found during ECM Part Number Check).
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.
CLAIMS INFORMATION
If a leak is found and repaired, submit a Primary Failed Part (PP) line using the claims coding shown.
If NO leak is found and the ECM is reprogrammed, submit a Primary Failed Part (PP) line using the claims coding shown.
SERVICE PROCEDURE
Perform CONSULT-II Self Diagnosis
1. With CONSULT-II "ON", print the Freeze Frame data as follows:
[START (Nissan)] >> [ENGINE] >> [Self-DIAG Results] >> [F.F. Data] >> [PRINT]
2. Attach this printout to the Repair Order.
^ The Freeze Frame data that you've printed contains the ECM Part Number (P/N).
^ Figure 1 is an example of the F.F. Data printout.
3. Perform "DTC Confirmation" for the code(s) stored in Self Diagnosis.
^ Use the appropriate Electronic Service Manual (ESM) and follow the procedure(s) exactly.
^ If a leak is found (DTC detected), use the appropriate ESM procedure to repair the vehicle. Then, proceed to ECM Part Number Check.
^ If a leak is not found (no DTC detected), proceed to ECM Part Number Check.
ECM Part Number Check:
1. Compare the vehicle's ECM P/N to those shown under Current ECM P/N in Chart 1, below. The ECM P/N will be on your CONSULT-II F.F. Data printout.
^ This comparison will allow you to determine if the ECM needs to be reprogrammed.
Chart 1, Current ECM P/N's:
A. If your vehicle's ECM P/N matches a P/N in the chart above:
^ Perform ECM Reprogramming (below).
B. If your vehicle's ECM P/N does not match a P/N in the chart above:
^ ECM Reprogramming is not necessary, this procedure is complete.
ECM REPROGRAMMING
Vehicle ECM Reprogramming Overview
^ There are four basic steps.
1. Download reprogramming data (transfer it) from ASIST into CONSULT-II.
2. "Preparation" steps before reprogramming.
3. Reprogram the vehicle ECM.
4. "Wrap-up" after reprogramming is finished.
^ 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: Maxima, 2004).
2. Select the correct reprogramming data:
a. Locate the specific "Model Configuration" (Example: VQ35 5A/T ASCD TCS).
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. (Write the "To" number on the repair order.)
NOTE:
The "To" number will read: 23710-XXXXX.
3. Click on the "Add" button.
^ This will add the selected data to the "File(s) Selected" list.
4. 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 on trickle (low) charge setting to the vehicle's battery.
CAUTION:
DO NOT connect the CONSULT-II AC power supply for items 2 and 3.
2. Press "SUB MODE" (see Figure B) then:
a. From the listed items, find and select "BATTERY CHARGE".
3. Check the CONSULT-II's "Charger Input" reading (see Figure C).
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.)
IMPORTANT
Do not perform ECU Reprogramming without connecting a battery charger to the vehicle's battery. Permanent ECU damage can occur.
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.
Step Three: Reprogram the Vehicle 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 1 second, then
b. Turn the ignition switch "OFF" again for 10 seconds (see Figure D). This will reset ECM "self learned" Data.
3. Start the engine and check the idle speed.
^ If idle speed is too low, perform IAVL (Idle Air Volume Learning). 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 "Check Engine Light" (MIL) is not "ON".
^ If necessary, use CONSULT-II and the Diagnostic (red/white) Card to erase any DTC's that may have stored during the reprogramming procedure.