Disclaimer Infiniti G35x Sedan AWD V6-3.5L (VQ35DE) Technical Service Bulletin # 04-027A Date: 060828
298
Engine Controls - MIL ON/DTC's P1031/P1051/P1148/P1168
Classification:
EC04-022a
Reference:
ITB04-027a
Date:
August 28, 2006
2004-2005 FX35 AND G35; MIL "ON" WITH DTC P1031, P1051, P1148, P1168
ITB04-027 has been amended and supersedes ITB04-023 Please discard all previous versions of these bulletins.
APPLIED VEHICLES:
2004-2005 FX35 (S50) and G35 (V35)
APPLIED VINS:
G35 Sedan 2WD After JNKCV51E(*)4M6000001
G35 Sedan 4WD After JNKCV51F(*)4M7000001
G35 Coupe After JNKCV54E(*)4M8000001
FX35 2WD After JNRAS08U(*)4X105001
FX35 4WD After JNRAS08W(*)4X210001
Vehicles built After October 2003.
APPLIED DATES:
IF YOU CONFIRM:
A MIL "ON" with the following DTC(s) stored:
On 2004 MY vehicles ONLY
^ P1031 / P1051 (A/F Sensor Heater), and/or
^ P1148 / P1168 (A/F Sensor Closed Loop Control),
On 2005 MY vehicles ONLY
^ P1148 / P1168 (A/F Sensor Closed Loop Control),
ACTIONS:
Step A: Use Consult II to confirm this bulletin applies:
^ Check the Current ECM Part Number.
^ Perform A/F Sensor test to confirm proper air fuel operation.
If the A/F sensor fails the test this bulletin does not apply. Go back to ASIST for further repair information.
^ 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: If this bulletin applies, reprogram the ECM.
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
299
Submit a Primary Failed Part (PP) line claim using the claims coding shown.
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. Use CONSULT-II DATA MONITOR to view;
^ Engine Speed and
^ A/F Sensor voltage (see Figure 2).
300
4. Hold the engine speed at about 2000 rpm no-load for 2 minutes.
^ This will create a stable condition for step 5 (below).
5. 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.
NOTE:
If the engine rpm is held constant voltage will fluctuate (change) but should remain in this range.
^ If the A/F sensor voltages are out of this range for most of the test this bulletin does not apply. Go back to ASIST for further diagnostic
and repair information.
^ If the A/F sensor voltages are OK proceed to step 6.
6. Check the ECM Part Number on the printout you made in Step 1.
^ Compare your vehicle's ECM P/N to those shown under Current ECM P/N in Chart A below:
Chart A
A. If your vehicle's ECM P/N matches a P/N in the chart above:
^ Go to Step B: ECM Reprogramming.
B. If your vehicle's ECM P/N does not match a P/N in the chart above:
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.
301
Step One: Download (Transfer) Data From ASIST Into CONSULT-II
1. Select vehicle model and model year (Example: FX35 2004).
2. Select the correct reprogramming data:
a. Locate the specific Model Configuration (Example: VQ35 A/i 2WD).
NOTE:
Model Configuration may include items such as engine type transmission type and vehicle options such as ASCD TCS and 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).
302
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.)
303
CAUTION:
If the "Charger Input" is below 12 volts:
^ A list of items to check when "Charger Input" voltage is below 1 2V is contained in the "ECM Reprogramming For Infiniti Vehicles" general
procedure.
Step Three: Reprogram the ECM
^ General procedure called "ECM Reprogramming For Infiniti Vehicles"
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.
