Infiniti QX56 (Z62). Manual - part 1291

 

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Infiniti QX56 (Z62). Manual - part 1291

 

 

TCM

TM-73

< ECU DIAGNOSIS INFORMATION >

[7AT: RE7R01B]

C

E

F

G

H

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K

L

M

A

B

TM

N

O

P

*: Not mounted but always display as OFF.

TERMINAL LAYOUT

PHYSICAL VALUES

SLCT LVR POSI

Selector lever in “N” and “P” positions

N/P

Selector lever in “R” position

R

Selector lever in “D” and “DS” positions

D

Selector lever in “M” position: 7GR

Selector lever in “M” position: 6GR

6

Selector lever in “M” position: 5GR

5

Selector lever in “M” position: 4GR

4

Selector lever in “M” position: 3GR

3

Selector lever in “M” position: 2GR

2

Selector lever in “M” position: 1GR

1

GEAR

During driving

1st, 2nd, 3rd, 4th, 5th, 6th, 7th

NEXT GR POSI

During driving

1st, 2nd, 3rd, 4th, 5th, 6th, 7th

SHIFT MODE

Driving with the D position

0 or 3

Driving with the manual mode

4 or 8

D/C PARTS

At 1GR - 2GR shift control

FAIL

Other than the above

NOTFAIL

FR/B PARTS

At control fixed to 1GR

FAIL

Other than the above

NOTFAIL

2346/B PARTS

At control fixed to 1GR

FAIL

Other than the above

NOTFAIL

2346B/DC PARTS

At 2GR - 3GR - 4GR shift control

FAIL

Other than the above

NOTFAIL

N IDLE STATUS

Idle neutral is active

ON

Other than the above

OFF

Item name

Condition 

Value / Status (Approx.)

SCIA1658E

Terminal

(Wire color)

Description

Condition

Value (Approx.)

+

Signal name

Input/

Output

1

(V)

Ground

Power supply

Input

Ignition switch ON

Battery voltage

Ignition switch OFF

0 V

2

(P)

Ground

Power supply
(Memory back-up)

Input

Always

Battery voltage

TM-74

< ECU DIAGNOSIS INFORMATION >

[7AT: RE7R01B]

TCM

Fail-Safe

INFOID:0000000006226783

TCM has the electrical fail-safe mode. The mode is divided into a maximum of 3 phases (1st fail-safe, 2nd fail-
safe and final fail-safe) and functions so that the operation can be continued even if the signal circuit of the
main electronically controlled input/output parts is damaged.
Even if the electronic circuit is normal, the fail-safe mode may start under special conditions (such as when the
brake pedal is depressed suddenly from a hard wheel spin status to stop the rotation of wheels). In this case,
turn the ignition switch OFF and back to ON after 5 seconds to resume the normal shift pattern.
Consequently, the customer's vehicle may already return to the normal condition. Refer to 

TM-88, "Diagnosis

Flow"

.

FAIL-SAFE FUNCTION

3

(L)

CAN-H

Input/

Output

4

(SB)

K-line

Input/

Output

5

(B)

Ground

Ground

Output

Always

0 V

6

(V)

Ground

Power supply

Input

Ignition switch ON

Battery voltage

Ignition switch OFF

0 V

7

(R)

Ground

Back-up lamp relay

Input

Ignition switch ON

Selector lever in “R” position.

0 V

Selector lever in other than 
above.

Battery voltage

8

(P)

CAN-L

Input/

Output

9

(BR)

Ground

Starter relay

Output

Ignition switch ON

Selector lever in “N” and “P” po-
sitions.

Battery voltage

Selector lever in other than 
above.

0 V

10

(B)

Ground

Ground

Output

Always

0 V

Terminal

(Wire color)

Description

Condition

Value (Approx.)

+

Signal name

Input/

Output

1st Fail-Safe

The mode that the vehicle can stop safely, to prompt the driver to stop if the malfunction occurs and to shift to 
2nd fail-safe early. It shifts to 2nd fail-safe or final fail-safe after the vehicle stopped.

2nd Fail-Safe

The mode that the vehicle shifts to final fail-safe without changing the behavior, by identifying the malfunction-
ing parts in the condition that the driving force required for the driving is secured.

Final Fail-Safe

• Selects the shifting pattern that the malfunctioning parts identified at 1st fail-safe and 2nd fail-safe are not 

used, and then secure the driving force that is required for the driving.

• The mode that the shifting performance does not decrease by normal shift control.

TCM

TM-75

< ECU DIAGNOSIS INFORMATION >

[7AT: RE7R01B]

C

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M

A

B

TM

N

O

P

DTC

Vehicle 

condition

Vehicle behavior for 1st fail-safe

Vehicle behavior for 2nd fail-safe

Vehicle behavior for final fail-safe

P0615

Starter is disabled

Starter is disabled

P0705

• Fixed in the “D” position (The 

shifting can be performed)

• 30 km/h (19MPH) or less
• Lock-up is prohibited
• The shifting between the gears 

of 3 - 4 - 5 - 6 - 7 can be per-
formed 

• Manual mode is prohibited
• Shift position indicator is 

switched OFF

• Starter relay is switched OFF 

(starter is disabled)

• Back-up lamp is OFF
• Large shift shock

• Fixed in the “D” position (The 

shifting can be performed)

• 30 km/h (19 MPH) or less
• Lock-up is prohibited
• The shifting between the gears 

of 3 - 4 - 5 - 6 - 7 can be per-
formed 

• Manual mode is prohibited
• Shift position indicator is 

switched OFF

• Starter relay is switched OFF 

(starter is disabled)

• Back-up lamp is OFF
• Large shift shock

P0710

Between 

the gears of 

1 - 2 - 3

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

Between 

the gears of 

4 - 5 - 6 - 7

• Fix the gear while driving
• Manual mode is prohibited

P0717

Between 

the gears of 

1 - 2 - 3

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

Between 

the gears of 

4 - 5 - 6 - 7

• Fix the gear while driving
• Manual mode is prohibited

P0720

Between 

the gears of 

1 - 2 - 3

• Only downshift can be per-

formed

• Manual mode is prohibited
• A vehicle speed signal from the 

combination meter is regarded 
as an effective signal

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

Between 

the gears of 

4 - 5 - 6 - 7

• Fix the gear at driving
• Manual mode is prohibited
• A vehicle speed signal from the 

combination meter is regarded 
as an effective signal

P0729
P0731
P0732
P0733
P0734
P0735
P1734

Neutral 
malfunction 
between 
the gears of 
1 - 2 - 3 and 
7

• Locks  in  4GR
• Manual mode is prohibited
• Neutral

• Locks  in  1GR
• The shifting between the gears 

of 1 - 2 can be performed

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• The shifting between the gears 

of 4 - 5 - 6 can be performed

• Manual mode is prohibited

Other than 
the above

• Driving with the gear ratio be-

tween 1GR and 2GR

• Driving with the gear ratio be-

tween 2GR and 3GR

• Locks  in  3GR
• Locks  in  4GR
• Fix the gear while driving
• Manual mode is prohibited
• Neutral

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

• Locks  in  1GR
• The shifting between the gears 

of 1 - 2 can be performed

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• The shifting between the gears 

of 2 - 3 - 4 can be performed

• The shifting between the gears 

of 3 - 4 can be performed

• The shifting between the gears 

of 4 - 5 - 6 can be performed

• Manual mode is prohibited

TM-76

< ECU DIAGNOSIS INFORMATION >

[7AT: RE7R01B]

TCM

Protection Control

INFOID:0000000006226784

The TCM becomes the protection control status temporarily to protect the safety when the safety of TCM and
transmission is lost. It automatically returns to the normal status if the safety is secured.
The TCM has the following protection control.

REVERSE INHIBIT CONTROL

Intercepts the torque transmission and shift to the neutral status if the selector lever is shifted to “R” position
while the vehicle moves forward at the vehicle speed 10 km/h (7 MPH) or more.

P0730

• Manual mode is prohibited
• Neutral

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

• Locks in 1GR
• The shifting between the gears 

of 1 - 2 can be performed

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

P0740

• Lock-up is prohibited
• Slip lock-up is prohibited

• Lock-up is prohibited
• Slip lock-up is prohibited

P0744

• Lock-up is prohibited
• Slip lock-up is prohibited

• Lock-up is prohibited
• Slip lock-up is prohibited

P0750
P0775
P0795
P2713
P2722
P2731
P2807

• Locks in 2GR, 3GR, 4GR, 5GR, 

6GR or 7GR

• Manual mode is prohibited

• Locks in 1GR
• The shifting between the gears 

of 1 - 2 - 3 can be performed

• The shifting between the gears 

of 3 - 4 - 5 can be performed

• The shifting between the gears 

of 4 - 5 - 6 can be performed

• The shifting between the gears 

of 1 - 2 - 3 - 4 - 5 - 6 can be per-
formed

• Manual mode is prohibited

P0780

• Manual mode is prohibited
• Neutral

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

P1705

• Downshift when accelerator ped-

al is depressed is prohibited

• Upshift when accelerator pedal 

is released is prohibited

• Manual mode is prohibited

• Downshift when accelerator ped-

al is depressed is prohibited

• Upshift when accelerator pedal 

is released is prohibited

• Manual mode is prohibited

• Downshift when accelerator ped-

al is depressed is prohibited

• Upshift when accelerator pedal 

is released is prohibited

• Manual mode is prohibited

P1730

• Neutral
• Manual mode is prohibited

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

• Locks in 1GR
• The shifting between the gears 

of 2 - 3 - 4 can be performed

• The shifting between the gears 

of 3 - 4 can be performed

• The shifting between the gears 

of 4 - 5 - 6 can be performed

• Manual mode is prohibited

P1815

Manual mode is prohibited

Manual mode is prohibited

U0300
U1000

Between 

the gears of 

1 - 2 - 3

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Manual mode is prohibited

• The shifting between the gears 

of 1 - 2 - 3 can be performed

• Line pressure is set to the maxi-

mum hydraulic pressure

• Manual mode is prohibited

Between 

the gears of 

4 - 5 - 6 - 7

• Fix the gear at driving
• Manual mode is prohibited

P0720

and

P1721

Locks in 5GR

Locks in 5GR

DTC

Vehicle 

condition

Vehicle behavior for 1st fail-safe

Vehicle behavior for 2nd fail-safe

Vehicle behavior for final fail-safe

 

 

 

 

 

 

 

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