NTB12116A

Classification:
EC12-026a
Reference:
Date:
NTB12-116a
September 16, 2014
2009-2014 MAXIMA; MIL “ON” WITH DTC’S P0014, P0024
The Title, the APPLIED VEHICLE section, and CLAIMS INFORMATION have been amended.
Please discard all previous versions of this bulletin.
APPLIED VEHICLE: 2009-2014 Maxima (A35)
IF YOU CONFIRM


MIL is on with DTC’s P0014 and/or P0024.
Customer describes a hesitation at speeds below 15 MPH after the oil was changed.
ACTION


Replace left and right cylinder bank’s “Exhaust Valve Control Magnet Retarder”.
See SERVICE PROCEDURE on page 2.
NOTE: Refer to the Electronic Service Manual (ESM) for the correct procedure to
remove and reinstall the left and right “IVT covers” from Front Timing Chain Case.
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
1. Preparation for removing the Exhaust
Valve Control Magnet Retarder.

Cut attached films provided in kit
along the dotted lines (Figure1).
Figure 1
2. Per the procedures outlined in the ESM, remove the left and right IVT covers
(Exhaust Valve Control Magnet Retarder covers).
IVT covers
Figure 2
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NTB12-116a
Exhaust Valve Control
Magnet Retarder
3. Lay the IVT covers on a flat surface with
the retarder positioned to your right.

Right side shown for reference only.
Figure 3
Securing
studs
4. Disconnect the retarder harness from the
external terminal and remove the wires
and protective sheath from the securing
studs.
External terminal
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Figure 4
NTB12-116a
Removal of Exhaust Valve Control Magnet Retarder

The 4 films that were cut out in step 1 will be used to unlock the wire clips.
NOTE: Do not perform this procedure when the IVT covers are HOT.
Film inserted
at 12 o’clock
position
6. Insert one of the films between the
retarder and the spindle at the
12 o’clock position.
a. The film should be inserted to Line “2”
labeled on the film.
b. If the film can only be inserted to Line
“1”, move the film around the spindle
until the film can be inserted Line 2.
c. Once the film can be inserted to Line
2, move the film left or right approx.
45°.

As the film forces the Spring Lock
to recess, slight resistance will be
felt.
d. Repeat the process with the
remaining 3 films so that 4 films
are spaced at 90° intervals
(see Figure 7).
Shown with
retarder removed
for reference
IMPORTANT:
 Two of the films will have to be
inserted at the 6:00 position to begin.
There is a Spring Lock positioned
every 90 degrees around the spindle.


Figure 5
4 spring locks
around outside
Figure 6
Begin by using the .075mm film to
remove the retarder. If the .075mm
films are not thick enough to
Apply gentle
disengage the Spring Locks, the
pressure to
.100mm films will need to be used.
insert last
film
A finesse stick may be used to
manipulate the retarder to increase
the clearance between the retarder
and spindle to make it easier to insert
all 4 films.
Figure 7
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NTB12-116a
7. Remove the Exhaust Valve Control
Magnet Retarder.
a. Place the IVT cover on edge with the
retarder at the top.
b. Forcefully swing the IVT cover
forward and allow the cover to bump
against your other hand (Figure 8).
c. The retarder should fall out of the IVT
cover into your hand.
Figure 8
NOTE: Do not touch the black IVT
sprocket sealing rings.
Install the new Exhaust Valve Control Magnet Retarder
8. Clean the ITV Cover if needed. Do not apply cleaner to the harness connector.

Confirm that there is no contamination
on the replacement retarder.
Dowels
Spindle
9. Noting the position of the retarder dowels
(2) on the rear of the retarder, and with
the harness wires pointing in the general
direction of the harness securing studs,
place the magnet retarder over the
spindle.
Figure 9
10. Gently twist the retarder in both
directions until the retarder dowels seat
in the O-ring seats.
NOTE: Do not use downward force to try
to seat the retarder. When the correct
position is achieved, the retarder will fall
into place with minimal downward force.
Figure 10
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NTB12-116a
Stud
11. Place the new harness into the securing
studs with the protective sheath being held
into place by the studs.
12. Connect the harness to the external terminal.
NOTE: The white wire of the harness should
be on top.
13. Once connected, check the resistance of the
circuit.
 Resistance of the circuit should be
10 (+/- 1) ohms.
Connect to
external terminal
Figure 11
14. Re-install the IVT covers onto the vehicle.
PARTS INFORMATION
DESCRIPTION
Exhaust Valve Control Magnet Retarder Kit
PART #
23795-JK21A
QUANTITY
2
CLAIMS INFORMATION
Submit a Primary Part (PFP) line claim using the following claims coding:
DESCRIPTION
REPL E-VTC CLUTCH – BOTH SIDES
PFP
(1)
OP CODE
AX38AA
SYM
ZE
DIA
32
FRT
1.2
(1) Refer to the electronic parts catalog (FAST) and use the appropriate IVT Cover part
number as the Primary Part (PFP).
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NTB12-116a