ITB19-003

Classification:
Reference:
Date:
EC19-003
ITB19-003
February 22, 2019
2019 QX50; SPARK KNOCK
APPLIED VEHICLE: 2019 QX50 (J55)
IF YOU CONFIRM:
A spark knock or knocking type noise coming from the engine under a low RPM/high load driving pattern
(alternatively, “at low speeds”)
AND
There are no DTCs stored in the ECM and/or TCM.
ACTION
1. Reprogram the ECM, if applicable.
2. Inform the customer that premium gasoline is recommended.
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.
Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe that
a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti retailer to determine if this
applies to your vehicle.
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SERVICE PROCEDURE
Reprogram the ECM
1. Using CONSULT- III plus (C-III plus), confirm the current ECM part number and write it on the repair order.

If it matches one of the part numbers in Table A on the next page, reprogram the ECM.

If it does not match any of the part numbers in Table A, go back to ASIST for further diagnostic and
repair information.
IMPORTANT: Before starting the reprogramming procedure, make sure:

ASIST on the CONSULT PC has been synchronized (updated) to the current date.

All C-III plus software updates (if any) have been installed.

The CONSULT PC is connected to the Internet (Wi-Fi or cable).
NOTE:

If you are not familiar with the reprogramming procedure, click here. This will link to the "CONSULTIII 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, it is required to perform
Throttle Valve Closed Position, Idle Air Volume Learn,
Accelerator Closed Position, and DTC Erase.
Figure 1
CAUTION:

Connect the GR8 to the 12V battery and select ECM Power Supply Mode. If the vehicle battery
voltage drops below 12.0V or above 15.5V during reprogramming, the ECM may be damaged.

Be sure to turn OFF all vehicle electrical loads. If a vehicle electrical load remains ON, the ECM
may be damaged.

Be sure to connect the AC Adapter. If the CONSULT PC battery voltage drops during
reprogramming, the process will be interrupted and the ECM may be damaged.

Turn OFF all external Bluetooth® devices (e.g., cell phones, printers, etc.) within range of the
CONSULT PC and the plus VI. If Bluetooth® signal waves are within range of the CONSULT PC
and the plus VI during reprogramming, reprogramming may be interrupted and the ECM may be
damaged.
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ITB19-003
Table A
MODEL
CURRENT ECM PART NUMBER: 237105NE0A, 5NE0B, 5NE0E
5NE1A, 5NE1B
5NE2A, 5NE2B
5NE3A, 5NE3B
5NE4A, 5NE4B
5NE5A, 5NE5B
5NE6A, 5NE6B
5NE7A, 5NE7B, 5NE7D
2019 QX50
5NE8A, 5NE8B
5NL0A, 5NL0B, 5NL0C, 5NL0D, 5NL0E
5NL1A, 5NL1B, 5NL1C, 5NL1D, 5NL1E
5NL2A, 5NL2B, 5NL2C, 5NL2D, 5NL2E
5NL3A, 5NL3B, 5NL3C, 5NL3D, 5NL3E
5NL4A, 5NL4B, 5NL4C, 5NL4D, 5NL4E
5NL5A, 5NL5B, 5NL5C, 5NL5D, 5NL5E
5NL6A, 5NL6B, 5NL6C, 5NL6D, 5NL6E
5NL7A, 5NL7B, 5NL7C, 5NL7D, 5NL7E
5NL8A, 5NL8B, 5NL8C, 5NL8D, 5NL8E
2. After completing Erase ALL DTCs, print a copy of the C-III plus screen showing the before and after part
numbers of the control unit and attach it to the repair order.
3. Inform the customer that unleaded premium gasoline with an octane rating of at least 91 Anti Knock Index
(AKI) is recommended. Refer to the owner’s manual for additional fuel recommendations and cautions.
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ITB19-003
CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
DESCRIPTION
Reprogram ECM
PFP
(1)
OP CODE
DE97AA
SYM
ZE
DIA
32
FRT
(2)
(1) Reference the electronic parts catalog, and use the Electronic Control Module (23703-*****) as the Primary
Failed Part (PFP).
(2) Reference the current Infiniti Warranty Flat Rate Manual and use the indicated Flat Rate Time (FRT).
AMENDMENT HISTORY
PUBLISHED DATE
February 22, 2019
REFERENCE
ITB19-003
DESCRIPTION
Original bulletin published
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ITB19-003