NTB18-018

Classification:
Reference:
EC17-035
Date:
NTB18-018
March 1, 2018
2013-2015 ALTIMA; ROUGH IDLE ON START UP
APPLIED VEHICLES:
2013-2015 Altima (L33)
IF YOU CONFIRM
Under the conditions listed below, when the engine is started it runs rough (rough idle) for
a few seconds, and then will idle normally:

Ambient temperature is between 25°F and 45°F (-4°C - 7°C).

The engine has been OFF (not running) long enough for the engine to be close to
the same temperature as the ambient temperature (about 6 hours).
NOTE: This bulletin does not apply to the following issues:

Engine does not start.

Engine has a long crank time before starting.
ACTION
1. Inspect the PCV valve (see page 2).

If the PCV valve is orange in color, replace it.
 See the PARTS INFORMATION.

If the PCV valve is black in color, do not replace it.
2. Refer to step 6 in the SERVICE PROCEDURE to confirm if a reprogram is available for
the vehicle you are working on.
3. If a reprogram is available, reprogram the ECM.
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.
Nissan 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 Nissan dealer to determine if this applies to your vehicle.
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SERVICE PROCEDURE
PCV Valve Inspection
1. Open the engine hood and locate the
PCV valve.
NOTE: An engine cover may need to be
removed.
2. If the PCV valve is orange in color,
replace it.

See PARTS INFORMATION.

Refer to the Electroninc Service
Manual (ESM), section EC-Engine
Control System, for PCV valve
replacement information.
PCV valve
NOTE: The new PCV valve is black
in color.
Figure A
3. If the vehicle’s PCV valve is already black in color, do not replace it.
ECM Reprogramming
IMPORTANT: Before starting, make sure:



ASIST on the CONSULT PC has been synchronized (updated) to the current
date.
All CONSULT-III plus (C-III plus) software updates (if any) have been installed.
The CONSULT PC is connected to the Internet (Wi-Fi or cable).
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, click here. This will link
you to the "CONSULT- III plus (C-III plus) 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 - 105°C
(158 - 221°F)
 Battery voltage: More than 12.9V (at idle)
 Transmission: Warmed up
Figure B
NOTE: After reprogramming is complete, you will be required to perform Throttle
Valve Closed Position, Idle Air Volume Learn, Accelerator Closed Position, and
DTC erase. The above conditions are required for IAVL to complete.
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CAUTION:

Connect the GR8 to the 12V battery and set to 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 during reprogramming, reprogramming may be
interrupted and the ECM may be damaged.
1. Connect the CONSULT PC to the vehicle to begin the reprogramming procedure.
2. Open / start C-III plus.
3. Wait for the plus VI to be recognized.

The Serial No. will display when the plus VI is recognized.
4. Select Re/programming, Configuration.
Step 3:
plus VI is
recognized
Step
4
Figure 1
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5. Follow the on-screen instructions and navigate C-III plus to the screen shown in
Figure 2.
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).
xxxxxxxxxxxxxxxx
Step 6A:
Current ECM P/N
xxxxx
xxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxx
Figure 2
B. Compare the P/N you wrote down to the numbers in the Current ECM Part
Number column in Table A (page 5).

If there is a match, continue with the reprogramming procedure.

If there is not a match, close C-III plus and refer to ASIST for further diagnostic
information.
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NTB18-018
Table A
MODEL
YEAR
2013
Altima
2014
2015
CURRENT ECM PART NUMBER: 237103TA0A, 3TA0B, 3TA0C
3TA1B, 3TA1C, 3TA1D
3TA6A, 3TA6B, 3TA6C, 3TA6D, 3TA6E
3TA7A, 3TA7B, 3TA7C, 3TA7D, 3TA7E
3TA8A, 3TA8B, 3TA8C, 3TA8D, 3TA8E
3TM3A, 3TM4A, 3TM5A, 3TM6A
3TM7A, 3TM8A
3TY0A, 3TY0B, 3TY0C
3TY1A, 3TY1B, 3TY1C
3TY6A, 3TY6B, 3TY6C, 3TY6D, 3TY6E
3TY7A, 3TY7B, 3TY7C, 3TY7D, 3TY7E
3TY8A, 3TY8B, 3TY8C, 3TY8D, 3TY8E
9HM3A, 9HM3B, 9HM3C, 9HM3D, 9HM3E
9HM4A, 9HM4B, 9HM4C, 9HM4D, 9HM4E
9HM5A, 9HM5B, 9HM5C, 9HM5D, 9HM5E
9HM6A, 9HM6B, 9HM6C, 9HM6D, 9HM6E
9HM7A, 9HM7B, 9HM7C, 9HM7D, 9HM7E
9HM8A, 9HM8B, 9HM8C, 9HM8D, 9HM8E
3GL6A, 3GL7A, 3GL8A
3GL3B, 3GL4B, 3GL5B
9GL3A, 9GL4A, 9GL5A
9HP0A, 9HP0B, 9HP0C, 9HP0D, 9HP0E
9HP1A, 9HP1B, 9HP1C, 9HP1D, 9HP1E
9HP2A, 9HP2B, 9HP2C, 9HP2D, 9HP2E
9HP3A, 9HP3B, 9HP3C, 9HP3D, 9HP3E
9HP4A, 9HP4B, 9HP4C, 9HP4D, 9HP4E
9HP5A, 9HP5B, 9HP5C, 9HP5D, 9HP5E
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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.
 If more than one new P/N is available, the screen in Figure 3 displays.
 Select and use the reprogramming option that does not have the message
“Caution! Use ONLY with NTBXX-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.
Figure 3

Before reprogramming will start, you will be required to enter your User Name and
Password.
 The CONSULT PC must be connected to the Internet (Wi-Fi or cable).
 If you do not know your User Name and Password, contact your Service
Manager.
Figure 4
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8. When the screen in Figure 5 displays, reprogramming is complete.
NOTE: If the screen in Figure 5 does not display (indicating that reprogramming did
not complete), refer to ECM recovery on the next page.
9. Disconnect the GR8 (battery charger) from the vehicle.
10. Select Next.
Step
10
Figure 5
NOTE:

In the next steps (page 9), 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.
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ECM Recovery
Do not disconnect plus VI or shut down Consult III plus if reprogramming does not
complete.
If reprogramming does not complete and the “!?” icon displays as shown in
Figure 6:

Check battery voltage
(12.0 - 15.5 V).

Ignition is ON, engine OFF.

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 6
If reprogramming does not complete and the “X” icon displays as shown in
Figure 7:

Check battery voltage
(12.0 - 15.5 V).

CONSULT A/C adapter is
plugged in.

Ignition is ON, engine OFF.

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 7
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NTB18-018
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.
o
o
o
o
o
o
o
Engine coolant temperature: 70 -105° C (158 - 221°F)
Battery voltage: More than 12.9V (At idle)
Selector lever: P or N
Electric load switch: OFF (Air conditioner, headlamp, rear window defogger)
Steering wheel: Neutral (Straight-ahead position)
Vehicle speed: Stopped
Transmission: Warmed up

Accelerator Pedal Close Position Learning

Erase DTCs
Continue to the next page.
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12. When the entire reprogramming process is complete, the screen in Figure 8 will
display.
13. Verify the before and after part numbers are different.
14. Print a copy of this screen (Figure 8) and attach it to the repair order for warranty
documentation.
15. Select Confirm.
xxxxxx
Step
13
xxxxxx
xxxxxxx
xxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxx
Step
14
Step
15
Figure 8
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.
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NTB18-018
PARTS INFORMATION
DESCRIPTION
VALVE ASSY-CONTROL
(PCV valve - black in color)
PART NUMBER
QUANTITY
11810-6N202
1 (if needed)
CLAIMS INFORMATION
Submit a PP (Primary Part) type claim using the following claims coding:
DESCRIPTION
Reprogram ECM
PFP
(1)
OP CODE
DE97AA
SYM
ZE
DIA
32
FRT
(2) (3)
(1) Refer to the electronic parts catalog (FAST or equivalent) and use the Blank ECM
assembly part number (23703-*****) as the Primary Failed Part (PFP).
(2) Reference the current Nissan Warranty Flat Rate Manual and use the indicated FRT.
(3) FRT allows adequate time to access DTC codes and reprogram ECM. No other
diagnostic procedures subsequently required. Do NOT claim any Diagnostic Op Codes
with this claim.
If the PCV Valve is inspected and replaced:
DESCRIPTION
PFP
RPL PCV Valve
(1)
OP CODE
AR32AA
SYM
ZE
DIA
32
FRT
(2)
(1) Refer to the electronic parts catalog (FAST) and use the Blank ECM assembly part
number (23703-*****) as the Primary Failed Part (PFP).
(2) Reference the current Nissan Warranty Flat Rate Manual and use the indicated FRT.
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