Nissan GT-R. Instruction — part 307

PRECAUTIONS

TM-7

< PRECAUTION >

[TRANSMISSION: GR6Z30A]

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The gear shift is
not performed
or slow.

The continuous instruction shift is not accept-
ed.

The excessively fast continuous gear shift is
prohibited for safety reasons. The gear shift
that can be accepted during the gear shift is
only the next gear shift.

Take interval time to
continuously operate
the paddle shifter.

Shift lever operation is denied when parking
the vehicle on a hill with the accelerator
pedal depressed.

Shift lever operation is denied when parking
the vehicle on a hill with the accelerator
pedal depressed to protect transmission
from being damaged.

When parking the vehi-
cle on a hill, fully de-
press the brake pedal to
operate the shift lever.

The gear shift in R mode of the M range is
slow.

The predictive pre-shift control provides a
waiting gear selection focusing on the full
sport driving. Therefore in normal driving, it
takes time for changing the waiting gear
and the gear shift time may be prolonged.

R mode of the M range
is basically used in sport
driving.

No automatic upshift occurs in R mode of
the M range.

In order to provide the operation feeling of
instruction transmission, no automatic upshift
occurs like instruction transmission.

Upshift instructionly or use
in Normal mode of the M
range.

In Normal mode of M range, 2 speed gear
shift is performed for one instruction upshift.

Normal mode of M range performs the au-
tomatic upshift when the specified engine
speed is reached. During the automatic up-
shift, if a instruction upshift intervenes by the
paddle shifter, a total of a 2-speed gear shift
(1-speed automatic gear shift + 1-speed
instruction gear shift) is performed.

If the automatic upshift
is used or a instruction gear
shift is done a little earli-
er, 1-speed gear shift
can be attained. Or, R
mode of the M range
without automatic up-
shift is used.

While driving in the A range, after the vehi-
cle is accelerated for merging onto a free-
way, for example, the automatic upshift
does not occur soon after the accelerator
pedal is released.

When the vehicle is accelerated rather hard
for merging onto a freeway, or runs on a
ramp curve with side G applied, the adap-
tive shift control works to activate the gear
hold status in which no gear shift occurs for
a certain period of time. This symptom stays
longer in R mode than Normal mode.

Waiting for a certain pe-
riod of time deactivates
the gear hold status. Or
upshift instructionly.

During a sudden deceleration, no automatic
downshift occurs.

During a sudden deceleration, if a tire lock
occurs, the actual vehicle speed cannot be
judged (the vehicle body moves, but the
wheels stop), therefore the appropriate
gear can no longer be selected. For safety
reasons, a gear shift is inhibited.

With a certain period of
time after the tire lock
disappears, an automat-
ic gear shift to the appro-
priate gear is resumed.

An upshift near the engine rev limit causes
a drop of the drive power.

A instruction upshift near the engine rev limit
may activate the engine over-rev protection
depending on the timing and lower the en-
gine torque. Therefore, an upshift at this
timing drops the drive power.

This symptom can be
eliminated by upshifting
a little earlier.

Shock generated by gearshift is great.

Shift shock varies depending on how the
accelerator pedal depressed during a gear
shift. Because the tuning allows an increase
of the shift speed as the accelerator pedal
travel increases, the shift shock also in-
creases.
For example, start the vehicle with the ac-
celerator pedal fully depressed, as the vehi-
cle speed increases, shift up to 2GR, after
that release the accelerator pedal and shift
up to 3GR. In this case, compared to 2GR
to 3GR shift shock, 1GR to 2GR shift shock
feels larger.

To prevent shift shock,
drive with gentle accel-
erator operation.

Symptom

Cause

Action

TM-8

< PRECAUTION >

[TRANSMISSION: GR6Z30A]

PRECAUTIONS

The drive pow-
er is not gener-
ated or weak,
or the engine
races.

The drive power is weak when the temper-
ature becomes extremely cold. The engine
does not race.

The engine torque and engine speed are
restricted to protect the transmission and
engine at low temperature (the transmis-
sion oil temperature is approximately

−

20

°

C

(

−

4

°

F) or less, or the engine oil temperature

is approximately 0

°

C (32

°

F) or less). The

drive power becomes weak or the engine
speed does not increase over the specified
speed.

If the oil temperature ris-
es, the restriction of en-
gine torque and engine
speed is cancelled.

The drive power is not generated at high oil
temperature. The engine does not race.

The engine torque and engine speed are
restricted to protect the transmission and
engine at high temperature (the transmis-
sion oil temperature is approximately 150

°

C

(302

°

F) or more, or the engine oil tempera-

ture is approximately 135

°

C (275

°

F) or

more). The drive power becomes weak or
the engine speed does not increase over
the specified speed.

Reduce the speed or
stop the vehicle in a safe
place until the engine oil
temperature decreases
or the transmission
warning lamp turns off.

The drive power is not generated at high
clutch temperature.

The engine torque and engine speed are
restricted to protect the clutch at high clutch
temperature. The drive power is not trans-
mitted when the temperature is further in-
creased. At this time, the vehicle may move
if the brake pedal is not depressed on a
slope.

Reduce the speed or
stop the vehicle with the
brake pedal depressed
until the transmission
warning lamp turns off.

At very low temperature, hard acceleration
causes engine racing.

At low oil temperature, because of a high oil
viscosity, oil pressure response takes time.
Therefore, before the clutch is engaged, the
engine speed increases, which may cause
an engine racing.

Do not perform hard ac-
celeration at low outside
temperature with cold
transmission.

After the vehicle stops with a sudden decel-
eration, depressing the accelerator pedal
causes engine racing.

Under a sudden deceleration, tire lock eas-
ily occurs. To prevent an engine stall when
a lock occurs, the clutch is released. Under
that status, depressing the accelerator ped-
al may cause racing.

With a certain period of
time after releasing the
accelerator pedal, the
clutch is engaged and
the racing stops.

Driving force is weak when using R mode
start.

If R mode starting is performed four times
consecutively, it restricts engine torque for
protection which makes R mode starting un-
able. R mode starting cannot be used when
a warning lamp is illuminated.

It can be recovered by
performing cool down
running [approx. 2 km
(1.2 mile) at 60-80 km/h
(38-49 MPH), gear in
5th or 6th] until trans-
mission warning lamp
turns off. Confirm the
warning lamp content.

The engine
stalls.

If the accelerator pedal and brake pedal are
depressed together to stop, the engine
stalls.

Because the clutch engagement pattern is
adjusted for start-up or acceleration de-
pending on the accelerator pedal operation,
if the brake pedal is depressed together, a
force to stop the engine is generated by
braking force and the engine may stall.

Refrain from simulta-
neous footing on accel-
erator pedal and brake
pedal as much as possi-
ble.

Symptom

Cause

Action

PRECAUTIONS

TM-9

< PRECAUTION >

[TRANSMISSION: GR6Z30A]

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The set-up
switch cannot
be changed.

It cannot be changed from SAVE mode to R
mode.

The mode changes by 1 step per 1 mode
switch operation.

When changing from
SAVE mode to R mode,
set to Normal mode
once, and then press
and hold the switch for 1
second to select R
mode.

It cannot be changed from R mode to SAVE
mode.

When changing from R
mode to SAVE mode,
set to Normal mode
once, and then press
the switch for SAVE
mode.

The combina-
tion meter dis-
play is
malfunctioning.

The oil change history is reset without oper-
ation.

The oil change history is reset if the power
supply is cut off when the battery is re-
moved at the battery replacement.

Note the history before
removing the battery.
Perform instruction setting
of history after recon-
necting.

Symptom

Cause

Action

TM-10

< PERIODIC MAINTENANCE >

[TRANSMISSION: GR6Z30A]

TRANSMISSION OIL

PERIODIC MAINTENANCE

TRANSMISSION OIL

Inspection

INFOID:0000000009162741

LEAKAGE CHECK

• Visually check transmission assembly surrounding area (oil seal, drain plug, filler plug, transmission case,

etc.) for smears and leakage of transmission oil.

• Check also the leakage or bleeding around rear final drive. For rear final drive check, refer to

DLN-25,

"Inspection"

.

JSDIA2641ZZ