Service Procedure
Step A: Confirm This Bulletin Applies
1. With CONSULT-II "ON", print the Freeze Frame data as shown.
2. Attach this printout to the Repair Order.
^ Figure 1 is an example of the F.F. Data printout.
^ The Freeze Frame data that you've printed contains the ECM Part Number (P/N).
^ The ECM part number will be used to see if this bulletin applies or not.
3. Check the ECM Part Number on the printout from Step 1 (Figure 1);
^ Compare your vehicle's ECM P/N to those shown under Current ECM P/N in Chart A shown.
^ If it's in that column, this bulletin applies.
A. If your vehicle's ECM P/N matches a P/N in the chart above:
^ Perform ECM Reprogramming, then
^ Perform A/F Sensor Test.
B. If your vehicle's ECM P/N does not match a P/N in the chart above:
^ This bulletin does not apply. Refer 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 (transfer) reprogramming data from ASIST into CONSULT-II.
2. "Preparation" steps before reprogramming ECM.
3. Reprogram the ECM.
4. "Wrap-up" after ECM reprogramming is finished.
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) Reprogramming Data From ASIST Into CONSULT-II
1. Select vehicle model and model year (Example: 350Z, 2004).
2. Select the correct reprogramming data:
a. Locate the specific "Model Configuration" (Example: VQ35DE, ASCD).
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 Steps Before Reprogramming ECM
1. Connect a battery charger to the vehicle's battery. Set the charger to a low charge rate (trickle charge).
CAUTION:
For step 2 below and step 3, DO NOT connect the CONSULT-II A/C Power Supply (see Figure B).
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 DTC's that may have stored during the reprogramming procedure.
Step C: Perform A/F Sensor Test
1. Use CONSULT-II DATA MONITOR to view;
^ Engine Speed, and
^ A/F Sensor voltage (see Figure 2).
2. Hold the engine speed at about 2000 rpm no-load for 2 minutes.
^ This will create a stable condition for step 3 (below).
3. Observe A/F SEN1 (B1) and A/F SEN1 (B2) voltage for 30 seconds while holding 2000 rpm no-load.
a. During most of this test, the A/F sensor voltages should remain between 1.37 and 1.57 volts.
^ If the engine rpm is held constant, voltage will fluctuate (change), but should remain in this range.
b. If the A/F sensor voltages are out of this range for most of the test:
^ The vehicle has an additional incident.
^ This bulletin does not have repair information for an A/F Sensor or Fuel Management System incident.
^ Go back to ASIST for further diagnostic and repair information for the additional incident.