Infiniti QX56 (Z62). Manual — part 1276
COMPONENT PARTS
TM-13
< SYSTEM DESCRIPTION >
[7AT: RE7R01B]
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A/T CONTROL SYSTEM : High and Low Reverse Clutch Solenoid Valve
INFOID:0000000006226748
• The high and low reverse clutch solenoid valve is controlled by the TCM in response to signals transmitted
from the transmission range switch, output speed sensor and accelerator pedal position sensor. Gears will
then be shifted to the optimum position.
• The high and low reverse clutch solenoid valve controls the high and low reverse clutch control valve in
response to a signal transmitted from the TCM.
A/T CONTROL SYSTEM : Low Brake Solenoid Valve
INFOID:0000000006226749
• The low brake solenoid valve is controlled by the TCM in response to signals transmitted from the transmis-
sion range switch, output speed sensor and accelerator pedal position sensor. Gears will then be shifted to
the optimum position.
• The low brake solenoid valve controls the low brake control valve in response to a signal transmitted from
the TCM.
A/T CONTROL SYSTEM : Anti-interlock Solenoid Valve
INFOID:0000000006226750
• Anti-interlock solenoid valve prevents the simultaneous activation of the input clutch and the low brake.
• The anti-interlock solenoid valve is an ON/OFF type solenoid valve.
A/T CONTROL SYSTEM : 2346 Brake Solenoid Valve
INFOID:0000000006226751
• The 2346 brake solenoid valve is controlled by the TCM in response to signals transmitted from the trans-
mission range switch, output speed sensor and accelerator pedal position sensor. Gears will then be shifted
to the optimum position.
• The 2346 brake solenoid valve controls the 2346 brake control valve in response to a signal transmitted from
the TCM.
A/T CONTROL SYSTEM : Torque Converter Clutch Solenoid Valve
INFOID:0000000006226752
The torque converter clutch solenoid valve is activated, with the gear in D
2
, D
3
, D
4
, D
5
, D
6
, D
7
, M2, M3, M4,
M5, M6 and M7 by the TCM in response to signals transmitted from the output speed sensor and accelerator
pedal position sensor. Torque converter clutch piston operation will then be controlled.
A/T CONTROL SYSTEM : Line Pressure Solenoid Valve
INFOID:0000000006226753
The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in
response to a signal transmitted from the TCM.
A/T CONTROL SYSTEM : Accelerator Pedal Position Sensor
INFOID:0000000006226754
• The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly.
• The accelerator pedal position sensor detects the accelerator position.
• The accelerator pedal position sensor transform the accelerator pedal position into output voltage, and emit
the voltage signal to the ECM. Then, the TCM receives accelerator pedal position signal from the ECM via
CAN communication.
A/T CONTROL SYSTEM : Manual Mode Switch
INFOID:0000000006226755
• The manual mode switch [mode select switch and position select switch (shift-up/shift-down)] is installed in
the A/T shift selector assembly.
• The mode select switch detects the position (the main shift gate side or manual shift gate side) of the selec-
tor lever and transmits a manual mode signal or a not manual mode signal to the combination meter. Then,
the TCM receives a manual mode signal or non-manual mode signal from the combination meter.
• The position select switch (shift-up) detects that the selector lever is shifted to the shift-up side of the manual
shift gate and transmits a manual mode shift up signal to the combination meter. Then, the TCM receives a
manual mode shift up signal from the combination meter.
• The position select switch (shift-down) detects that the selector lever is shifted to the shift-down side of the
manual shift gate and transmits a manual mode shift down signal to the combination meter. Then, the TCM
receives a manual mode shift down signal from the combination meter.
TM-14
< SYSTEM DESCRIPTION >
[7AT: RE7R01B]
COMPONENT PARTS
A/T CONTROL SYSTEM : Tow Mode Switch
INFOID:0000000006226756
• Tow mode switch is integrated in to
• Tow mode switch is integrated in to SNOW MODE/TOW MODE/VDC OFF switch assembly (2WD models)
or 4WD switch assembly (4WD models).
• When tow mode switch is pressed while tow mode indicator lamp on combination meter is OFF, the tow
mode turns ON and tow mode indicator lamp turns ON.
• When tow mode switch is pressed while tow mode indicator lamp on combination meter is ON, the tow mode
turns OFF and tow mode indicator lamp turns OFF.
A/T CONTROL SYSTEM : A/T CHECK Indicator Lamp
INFOID:0000000006226757
A/T CHECK INDICATOR LAMP
Turns ON when ignition switch turns ON and turns OFF when the system is normal, for bulb check purposes.
A/T CONTROL SYSTEM : Tow Mode Indicator Lamp
INFOID:0000000006226758
TOW MODE INDICATOR LAMP
Turns ON when tow mode is switched to operational status (ON) by tow mode switch.
A/T CONTROL SYSTEM : Selector Lever Position Indicator
INFOID:0000000006226759
Indicates selector lever position.
A/T SHIFT LOCK SYSTEM
Condition (status)
A/T CHECK indicator lamp
Ignition switch OFF
OFF
For approx. 2 seconds after the ignition switch is turned ON
ON
Approx. 2 seconds after ignition switch is turned ON
OFF
A/T is malfunctioning
OFF
Condition (status)
Tow mode indicator lamp
Ignition switch OFF
OFF
When ignition switch turns ON
OFF
Press tow mode switch while tow mode indicator lamp is OFF.
ON
Press tow mode switch while tow mode indicator lamp is ON.
OFF
COMPONENT PARTS
TM-15
< SYSTEM DESCRIPTION >
[7AT: RE7R01B]
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A/T SHIFT LOCK SYSTEM : Component Parts Location
INFOID:0000000006226760
A/T SHIFT LOCK SYSTEM : Component Description
INFOID:0000000006226761
1.
.
2.
Shift lock cover *
3.
Shift lock solenoid
4.
Park position switch
A.
Center console
B.
A/T shift selector assembly
*: Shift lock release button becomes operative by removing shift lock cover.
JSDIA1695GB
Component
Function
Shift lock solenoid
It operates according to the signal from the stop lamp switch and moves the lock lever.
Lock lever
It moves according to the operation of the shift lock solenoid and performs the release of
the shift lock.
Detent rod
It links with the selector button and restricts the selector lever movement.
Park position switch
It detects that the selector lever is in “P” position.
Shift lock release button
It moves the lock lever forcibly.
TM-16
< SYSTEM DESCRIPTION >
[7AT: RE7R01B]
STRUCTURE AND OPERATION
STRUCTURE AND OPERATION
TRANSMISSION
TRANSMISSION : Cross-Sectional View
INFOID:0000000006226762
2WD MODELS
4WD MODELS
1.
Low brake
2.
Drum support
3.
Reverse brake
4.
Direct clutch
5.
High and low reverse clutch
6.
2nd one-way clutch
7.
*1
Rear carrier
8.
Mid carrier
9.
Input clutch
10.
*2
Front sun gear
11.
*3
Front carrier
12.
Under drive carrier
13.
1st one-way clutch
14.
Front brake
15.
2346 brake
16.
*4
Input shaft
17.
Torque converter
18.
Oil pump
19.
*2
Under drive sun gear
20.
*3
Under drive internal gear
21.
*4
Front internal gear
22.
Mid sun gear
23.
*1
Mid internal gear
24.
Rear sun gear
25.
Rear internal gear
26.
High and low reverse clutch hub
27.
Control valve & TCM
28.
Parking gear
29.
Adapter case
30.
Output shaft
*1: 7 and 23 are one unit.
*2: 10 and 19 are one unit.
*3: 11 and 20 are one unit.
*4: 16 and 21 are one unit.
JSDIA1852ZZ
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