Classification:

Reference:

Date:

EC18-016

ITB18-022

June 28, 2018

2014 – 2017 Q50 HYBRID; ENGINE STOPS RUNNING IN EXTREMELY HOT
AMBIENT TEMPERATURES AND DTC P3182 STORED
APPLIED VEHICLES:
APPLIED ENGINE:

2014 – 2017 Q50 Hybrid (V37)
VQ35HR

IF YOU CONFIRM
Engine stops running in extremely hot ambient temperatures (greater than 110 degrees Fahrenheit)
and
DTC P3182 HV BATTERY SYSTEM is stored.

ACTION
1. Refer to step 14 in the SERVICE PROCEDURE to see if this bulletin applies to the vehicle you are working
on.
2. If this bulletin applies, reprogram the Hybrid Powertrain Control Module (HPCM).

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

1. Before continuing, it is IMPORTANT to make sure:


ASIST on the CONSULT PC has been freshly synchronized (updated) to the current date.



All CONSULT related software updates (if any) have been installed.
NOTE: The CONSULT PC automatically gets all reprogramming software during ASIST
synchronization.

CAUTION:


Connect the GR8 to the vehicle 12 volt battery and set to ECM power supply mode.
If the vehicle battery voltage drops below 12.0V or rises above 15.5V during reprogramming,
control unit may be damaged.



Be sure to turn OFF all vehicle electrical loads.
If a vehicle electrical load remains ON, control unit 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 control unit 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 during reprogramming, reprogramming may be interrupted and control unit may be damaged.

2. Once all ASIST and CONSULT related updates have been performed, attach the CONSULT PC to the
vehicle.


Connect the plus VI to the vehicle.



Connect the AC adapter to the CONSULT PC.

3. Turn ON the CONSULT PC, and then open CONSULT III plus (C-III plus).
NOTE: Make sure all applications other than C-III plus are closed.

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4. Press the ignition switch twice without depressing the brake pedal.


The meter and gauges will illuminate.



Make sure the Ready light is OFF.

5. Check for stored DTCs in all systems as follows:
a. Wait for the plus VI to be recognized.
b. Select Diagnosis (All Systems).
c. Wait for System Call to complete.
d. Check for stored DTCs.
 If no DTCs found, go to step 6.
 If any DTCs are found stored:
 Perform diagnosis and repairs related to the stored DTC(s), and then erase the DTC(s).
 When completed, go to step 6.

6. Go to Re/programming, Configuration.
a. Select the Home button, and then YES to return to the screen shown in Figure 1.
b. Select Re/programming, Configuration.

Plus VI is
recognized

Step
5b
Step
6b

Figure 1

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7. Check the box for Confirmed Instructions, and then select Next.

Step
7

Figure 2
8. If the screen in Figure 3 does not display, skip to step 10.
9. If the screen in Figure 3 displays, select Automatic Selection(VIN).

Step 9

Figure 3

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10. Verify the VIN or Chassis # matches that of the vehicle.


If the correct VIN is displayed, select Confirm.

Verify
here

If OK, select
Confirm

Figure 4

11. Select Confirm again.

Step
11

Figure 5

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12. Use the page arrows to scroll to EV/HEV.

Step
12

Scroll with
arrows

Figure 6
13. Wait for System Call to complete, and then select Reprogramming.

Step
13

Figure 7

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14. When you get to the screen shown in Figure 8, confirm reprogramming applies as follows:
A. Find the current Part Number and write it on the repair order.

Current Part
Number

14C: If a match,
select Save

Figure 8
B. Compare the P/N written down to the P/Ns in the Current Part Number column of Table A below:


If there is a match, reprogramming applies. Continue with the reprogramming procedure.



If there is not a match, this bulletin does not apply. Refer to ASIST for further diagnostic and repair
information.

C. If there is a P/N match as specified above, select Save, and then continue with the reprogramming
procedure.

Table A
MODEL

2014 – 2017
Q50 Hybrid

CONTROL
MODULE

CURRENT PART NUMBER (237A0):

EV/HEV

4HC0A, 4HC0B, 4HC0C, 4HC0D
4HC1A, 4HC1B, 4HC1C, 4HC1D
4HC2A, 4HC2B, 4HC2C, 4HC2D
4HC3A, 4HC3B, 4HC3C, 4HC3D
4HC4A, 4HC4B, 4HC4C, 4HC4D
4HC5A, 4HC5B, 4HC5C, 4HC5D

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15. Read the precautions on the C-III plus screen (use page arrow as needed). After reading, select
Confirmed instructions, and then select Next.

Step
15

Figure 9

16. Read the Current Part Number and Part Number After Reprogramming. They should be different.
17. Select Next.

Step 16
These numbers
should be different

Step
17

Figure 10

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NOTE: In some cases, more than one new P/N for reprogramming is available.
 If more than one new P/N is available, the screen in Figure 11 will display.
 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 that control unit.

XXXXX

Figure 11

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18. Make sure OK is highlighted green (battery voltage must be between 12.0 and 15.5 Volts).
19. Select Next.
IMPORTANT: Battery voltage must stay between 12.0 and 15.5 Volts during reprogramming or ECM
reprogramming may be interrupted and ECM/TCM may be damaged.

Monitor battery
voltage here

Step
18
Step
19

Figure 12
20. Confirm all Judgment items are OK, then select Start.

Monitor battery
voltage here

EXAMPLE
Step
20

Figure 13
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21. Select USA/CANADA Dealers.
22. Select OK.

Step
21

Step
22

Figure 14
NOTE:


The above screen may not display if the CONSULT PC has remained ON since the last
reprogramming.



If the CONSULT PC is not connected to the Internet, the screen in Figure 15 will display.

Figure 15

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NOTE: In the next steps, the reprogramming process will begin when Submit is selected.

23. Enter your Username and Password.


The CONSULT PC must be connected to the Internet via cable or Wi-Fi.



If you do not know your User Name and Password, contact your Service Manager.

24. Select Submit.

Step
24

Figure 16

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25. Wait for both bar graphs to complete.

Figure 17
26. When the screen in Figure 18 displays, reprogramming is complete.
NOTE: If the screen in Figure 18 does not display (indicating that reprogramming did not complete), refer to
the information on page 14.
27. Select Next.

Step
21

Figure 18
NOTE:
 In the next step, on page 15, you will perform DTC erase.


DTC erase is required before C-III plus will provide the final reprogramming confirmation report.
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Control Unit Recovery:
Do not disconnect plus VI or shut down C-III plus if reprogramming does not complete.
If reprogramming does not complete and the “!?” icon displays as shown in
Figure 19:


Check battery voltage
(12.0–15.5 V).



Ignition is ON, not Ready.



External Bluetooth® devices are
OFF.



All electrical loads are OFF.



Select retry and follow the on
screen instructions.



“Retry” may not go through on first
attempt and can be selected more
than once.
Figure 19

If reprogramming does not complete and the “X” icon displays as shown in
Figure 20:



Check battery voltage
(12.0 – 15.5 V).



CONSULT A/C adapter is plugged
in.



Ignition is ON, not Ready.



Transmission is in Park.



All C-III plus / VI cables are securely
connected.



All C-III plus updates are installed.



Select Home, and restart the
reprogram procedure from the
beginning.

Figure 20

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28. Erase all DTCs as follows:
a. Turn the ignition OFF.


The screen in Figure 21 will read OFF after pressing the power switch once.

Turn ignition switch OFF position

ON to
OFF

Figure 21

b. Turn the ignition ON, not Ready (press switch twice, no foot on brake).
 The screen in Figure 22 will read ON after pressing the power switch twice.

OFF to
ON

OFF

Figure 22

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c. Wait for the bar graph in the ERASE window to complete 100%.
d. Select Next.

Step
28c

Step
28d

Figure 23
29. Verify the P/N has changed (before and after reprogramming P/Ns should be different).
a. Print a copy of the screen in Figure 24 by selecting Print.
b. Attach the copy to the repair order.
c. Once a copy has been printed, select Confirm.

Step
29

Step
29a
Step
29c

Figure 24

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30. After confirmation has completed, select Home

Step
30

Figure 25
31. Use C-III plus to check and erase any stored DTCs in all systems as follows:
a. Select Diagnosis (All Systems).
b. Wait for System Call to complete.
c. Check and erase any stored DTCs.
32. Disconnect C-III plus from the vehicle.
33. Turn the ignition OFF.
34. Disconnect the GR8 from the 12V battery.

CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
DESCRIPTION
PFP
OP CODE
SYM
DIA
FRT
Reprogram Hybrid Powertrain Control
(1)
JX55AA
ZE
32
0.6 hrs.
Module
(1) Reference the electronic parts catalog (FAST or equivalent), and use the HPCM (237A0-*****) as the
Primary Failed Part (PFP).

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