Engine Controls - MIL ON/DTC P0605 Stored In ECM
Classification: EC12-001Reference: ITB12-001
Date: January 3, 2012
2011-2012 QX56; MIL "ON" WITH DTC P0605 STORED
This bulletin supersedes ITB11-067.
APPLIED VEHICLES: 2011-2012 QX56 (Z62)
APPLIED VINS: 2011 QX56: All
2012 QX56 4WD built before:
JN8AZ2NC(*)C9 315948 or JN8AZ2NE(*)C9 017107
2012 QX56 2WD built before:
JN8AZ2ND(*)C9 715521 or JN8AZ2NF(*)C9 516098
APPLIED DATES: 2011 QX56: All
2012 QX56 vehicles built before October 15, 2011
IF YOU CONFIRM
The MIL is ON with DTC P0605 (ECM) stored in the ECM.
ACTION
1. Refer to step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on.
2. If this bulletin applies reprogram the ECM.
CLAIMS INFORMATION
IMPORTANT:
The purpose of ACTION (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.
SERVICE PROCEDURE
NOTE:
^ Most instructions for reprogramming with CONSULT-III plus (C-III plus) are displayed on the CONSULT PC screen.
^ If you are not familiar with the reprogramming procedure refer to the "CONSULT- III plus (C-III plus) ECM Reprogramming" general procedure.
^ Take the vehicle for a 10 minute drive in order to meet the following Idle Air Volume Learn (IAVL) conditions:
> Engine coolant temperature: 70-100°C (158-212°F)
> Battery voltage: More than 12.9V (At idle)
> Transmission: Warmed up
^ After reprogramming is complete you will be required to perform Throttle Valve Closed Position Idle Air Volume Learn Accelerator Closed Position and DTC erase.
CAUTION
1. Connect the CONSULT PC to the vehicle to begin the reprogramming procedure.
2 Open ASIST on the CONSULT PC and start C-III plus.
3. Wait for the plus VI to be recognized / connected.
^ Serial number will display when the plus VI is recognized / connected.
4. Select Re/programming, Configuration.
5. Follow the on-screen instructions and navigate the C-III plus to the screen shown in Figure 2 above.
6. When you get to the screen shown in Figure 2 confirm this bulletin applies as follows:
A. Find the ECM Part Number and write it on the repair order.
NOTE:
This is the current ECM Part Number (P/N).
B. Compare the P/N you wrote down to the numbers in the Current ECM Part Number column in Table A above.
^ If there is a match this bulletin applies. Continue with the reprogramming procedure.
^ If there is not a match this bulletin does not apply. Close C-III plus and refer to ASIST for further diagnostic information.
7. Follow the on-screen instructions to navigate C-III plus and reprogram the ECM.
NOTE:
^ In some cases more than one new P/N for reprogramming is available.
> In this case the screen in Figure 3 displays.
^ Select and use the reprogramming option that does not have the message "Caution! Use ONLY with ITBXX-XXX".
^ If you get this screen and it is blank (no reprogramming listed) it means there is no reprogramming available for this vehicle. Close C-III plus and refer back to ASIST for further diagnosis.
8. When the screen in Figure 4 displays reprogramming is complete.
9. Disconnect the battery charger from the vehicle.
10. Select Next.
NOTE:
^ In the next steps you will perform Throttle Valve Closed Position Idle Air Volume Learn Accelerator Closed Position and DTC erase.
^ These operations are required before C-III plus will provide the final reprogramming confirmation report.
11. Follow the on-screen instructions to perform the following:
^ Throttle Valve Closed Position
^ Idle Air Volume Learn (IAVL)
NOTE:
^ Listed below are common conditions required for IAVL to complete.
^ If IAVL does not complete within a few minutes, a condition may be out of range.
^ Refer to the appropriate Electronic Service Manual (ESM) for specific conditions required for the vehicle you are working on.
> Engine coolant temperature: 70-100°C (158-212°F)
> Battery voltage: More than 12.9V (At idle)
> Selector lever: P or N
> Electric load switch: OFF (Air conditoioner, headlamp, rear window defogger)
> Steering wheel: Neutral (Straight-ahead position)
> Vehicle speed: Stopped
> Transmission: Warmed up
^ Accelerator Pedal Close Position Learning
^ Erase DTCs
12. When the entire reprogramming process is complete the screen in Figure 5 will display.
13. Verify the before and after part numbers are different.
14. Print a copy of this screen (Figure 5) and attach it to the repair order for warranty documentation.
15. Select Confirm.
16. Close C-III plus.
17. Turn the ignition OFF.
18. Disconnect the plus VI from the vehicle.
19. Test drive the vehicle and make sure it operates correctly and the MIL is OFF.
^ If the MIL comes ON go back to ASIST for further diagnostic information.
^ Diagnosis and repairs beyond ECM reprogramming are not covered by this bulletin.