ITB18-022

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.
1/17
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.
2/17
ITB18-022
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
3/17
ITB18-022
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
4/17
ITB18-022
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
5/17
ITB18-022
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
6/17
ITB18-022
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
7/17
ITB18-022
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
8/17
ITB18-022
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
9/17
ITB18-022
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
10/17
ITB18-022
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
11/17
ITB18-022
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
12/17
ITB18-022
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.
13/17
ITB18-022
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
14/17
ITB18-022
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
15/17
ITB18-022
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
16/17
ITB18-022
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).
17/17
ITB18-022