2011 INFINITI QX56 Factory Service Manual

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Page 5145 of 5598

INFINITI QX56 2011 Factory Service Manual
SYSTEMTM-57
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
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TM
N
O PLock-up Operation Condition Table
Lock-up released
In the lock-up released state, the torque converter clutch contr

Page 5146 of 5598

INFINITI QX56 2011 Factory Service Manual
TM-58
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
SYSTEM
A/T SHIFT LOCK SYSTEM : System Description
INFOID:0000000006226779
The selector lever cannot be shift ed from the “P” position unless the
brake

Page 5147 of 5598

INFINITI QX56 2011 Factory Service Manual
SYSTEMTM-59
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
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The shift lock solenoid (A) is not energized when the ignition switch
is in any position other than ON. In this condi

Page 5148 of 5598

INFINITI QX56 2011 Factory Service Manual
TM-60
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNO
STIC (OBD) SYSTEM
Diagnosis DescriptionINFOID:0000000006226780
The A/T system has two self-diagnostic syst

Page 5149 of 5598

INFINITI QX56 2011 Factory Service Manual
DIAGNOSIS SYSTEM (TCM)TM-61
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
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DIAGNOSIS SYSTEM (TCM)
CONSULT-III Function (TRANSMISSION)INFOID:0000000006226781
CONSULT-III APPLICA

DIAGNOSIS SYSTEM (TCM)TM-61
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
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DIAGNOSIS SYSTEM (TCM)
CONSULT-III Function (TRANSMISSION)INFOID:0000000006226781
CONSULT-III APPLICATION ITEMS
*: Although “Function Test” and “Special Function” are selectable, do not use its.
WORK SUPPORT
SELF DIAGNOSTIC RESULTS
Refer to TM-78, "DTC Index".
IGN Counter
The IGN counter is indicated in Fr eeze frame data (FFD) and indicates the number of times that the ignition
switch is turned ON after returning to the normal state from DTC.
CAN malfunction
- The number is 0 when a malfunction is detected now.
- The number increases like 1 → 2 → 3...38 → 39 after returning to the normal condition whenever ignition
switch OFF → ON.
- The number is fixed to 39 until the self-di agnosis results are erased if it is over 39.
Other than CAN malfunction
- The number is 0 when a malfunction is detected now.
- The number increases like 1 → 2 → 3...254 → 255 after returning to the normal condition whenever ignition
switch OFF → ON.
- The number is fixed to255 until the self-diagno sis results are erased if it is over 255.
DATA MONITOR
X: Standard, —: Not applicable, : Option
Diagnostic test mode Function
Work Support This mode enables a technician to adjust some devices faster and more accurately.
Self Diagnostic Results Retrieve DTC from ECU and display diagnostic items.
Data Monitor Monitor the input/output signal of the control unit in real time.
CAN Diagnosis This mode displays a network diagnosis result about CAN by a diagram.
CAN Diagnostic Support
Monitor It monitors the status of CAN communication.
DTC & SRT confirmation The status of system monitoring tests and the self-diagnosis status/result can be confirmed.
ECU Identification Display the ECU identification number (part number etc.) of the selected system.
Function Test* This mode can show results of self-diagnosis of ECU with either “OK” or “NG”. For engine, more prac-
tical tests regarding sensors/switches and/or actuators are available.
Special Function* Other results or histories, etc. that are recorded in ECU are displayed.
Item name Description
G SENSOR CALIBRATION Calibrates G sensor.
Monitored item (Unit) Monitor Item Selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
ITEM
VHCL/S SE-A/T (km/h or mph) X X Displays the vehicle speed calculated by the
TCM from the output shaft revolution.
ESTM VSP SIG (km/h or mph) X — Displays the vehicle speed signal received via
CAN communication.
OUTPUT REV (rpm) X X Displays the output speed calculated from the
pulse signal of output speed sensor.
Revision: 2010 May2011 QX56

Page 5150 of 5598

INFINITI QX56 2011 Factory Service Manual
TM-62
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
DIAGNOSIS SYSTEM (TCM)
INPUT SPEED (rpm) X X Displays the input speed calculated from front
sun gear revolution and front carrier revolution.
F SUN GR REV

TM-62
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
DIAGNOSIS SYSTEM (TCM)
INPUT SPEED (rpm) X X Displays the input speed calculated from front
sun gear revolution and front carrier revolution.
F SUN GR REV (rpm) — — Displays the front sun gear revolution calculat-
ed from the pulse signal of input speed sensor
1.
F CARR GR REV (rpm) — — Displays the front carrier gear revolution calcu-
lated from the pulse signal of input speed sen-
sor 2.
ENGINE SPEED (rpm) X X Displays the engine speed received via CAN
communication.
TC SLIP SPEED (rpm) — X Displays the revolution difference between in-
put speed and engine speed.
ACCELE POSI (0.0/8) X — Displays the accelerator position estimated val-
ue received via CAN communication.
THROTTLE POSI (0.0/8) X X Displays the throttle position received via CAN
communication.
ATF TEMP 1 ( °C or °F) X X Displays the ATF temperature of oil pan calcu-
lated from the signal voltage of A/T fluid tem-
perature sensor.
ATF TEMP 2 ( °C or °F) X X Displays the ATF temperature estimated value
of torque converter outlet calculated from the
signal voltage of A/T fluid temperature sensor.
ATF TEMP SE 1 (V) — — Displays the signal voltage of A/T fluid temper-
ature sensor.
BATTERY VOLT (V) X — Displays the power supply voltage of TCM.
LINE PRES SOL (A) — X Displays the command current from TCM to the
line pressure solenoid.
TCC SOLENOID (A) — X Displays the command current from TCM to the
torque converter clutch solenoid.
L/B SOLENOID (A) — X Displays the command current from TCM to the
low brake solenoid.
FR/B SOLENOID (A) — X Displays the command current from TCM to the
front brake solenoid.
HLR/C SOL (A) — X Displays the command current from TCM to the
high and low reverse clutch solenoid.
I/C SOLENOID (A) — X Displays the command current from TCM to the
input clutch solenoid.
D/C SOLENOID (A) — X Displays the command current from TCM to the
direct clutch solenoid.
2346/B SOL (A) — X Displays the command current from TCM to the
2346 brake solenoid.
L/P SOL MON (A) — — Monitors the command current from TCM to the
line pressure solenoid, and displays the moni-
tor value.
TCC SOL MON (A) — — Monitors the command current from TCM to the
torque converter clutch solenoid, and displays
the monitor value.
L/B SOL MON (A) — — Monitors the command current from TCM to the
low brake solenoid, and displays the monitor
value.
Monitored item (Unit)
Monitor Item Selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM ITEM
Revision: 2010 May2011 QX56

Page 5151 of 5598

INFINITI QX56 2011 Factory Service Manual
DIAGNOSIS SYSTEM (TCM)TM-63
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
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FR/B SOL MON (A) — — Monitors the command current from TCM to the
front brake solenoid, and disp

DIAGNOSIS SYSTEM (TCM)TM-63
< SYSTEM DESCRIPTION > [7AT: RE7R01B]
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FR/B SOL MON (A) — — Monitors the command current from TCM to the
front brake solenoid, and displays the monitor
value.
HLR/C SOL MON (A) — — Monitors the command current from TCM to the
high and low reverse clutch solenoid, and dis-
plays the monitor value.
I/C SOL MON (A) — — Monitors the command current from TCM to the
input clutch solenoid, and displays the monitor
value.
D/C SOL MON (A) — — Monitors the command current from TCM to the
direct clutch solenoid, and displays the monitor
value.
2346/B SOL MON (A) — — Monitors the command current from TCM to the
2346 brake solenoid, and displays the monitor
value.
GEAR RATIO — X Displays the gear ratio calculated from input
speed and output speed.
ENGINE TORQUE (Nm) — — Displays the engine torque estimated value re-
ceived via CAN communication.
ENG TORQUE D (Nm) — — Displays the engine torque estimated value re-
flected the requested torque of each control unit
received via CAN communication.
INPUT TRQ S (Nm) — — Displays the input torque using for the oil pres-
sure calculation process of shift change control.
INPUT TRQ L/P (Nm) — — Displays the input torque using for the oil pres-
sure calculation process of line pressure con-
trol.
TRGT PRES L/P (kPa, kg/cm
2 or psi)—— Displays the target oil pressure value of torque
converter clutch solenoid valve calculated by
the oil pressure calculation process of lock-up
control.
TRGT PRES TCC (kPa, kg/cm
2 or psi)—— Displays the target oil pressure value of torque
converter clutch solenoid valve calculated by
the oil pressure calculation process of shift
change control.
TRGT PRES L/B (kPa, kg/cm
2 or psi)—— Displays the target oil pressure value of low
brake solenoid valve calculated by the oil pres-
sure calculation process of shift change control.
TRGT PRE FR/B (kPa, kg/cm
2 or psi)—— Displays the target oil pressure value of front
brake solenoid valve calculated by the oil pres-
sure calculation process of shift change control.
TRG PRE HLR/C (kPa, kg/cm
2 or psi)—— Displays the target oil pressure value of high
and low reverse clutch solenoid valve calculat-
ed by the oil pressure calculation process of
shift change control.
TRGT PRES I/C (kPa, kg/cm
2 or psi)—— Displays the target oil pressure value of input
clutch solenoid valve calculated by the oil pres-
sure calculation process of shift change control.
TRGT PRES D/C (kPa, kg/cm
2 or psi)—— Displays the target oil pressure value of direct
clutch solenoid valve calculated by the oil pres-
sure calculation process of shift change control.
Monitored item (Unit)
Monitor Item Selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM ITEM
Revision: 2010 May2011 QX56

Page 5152 of 5598

INFINITI QX56 2011 Factory Service Manual
TM-64
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
DIAGNOSIS SYSTEM (TCM)
TRG PRE 2346/B
(kPa, kg/cm2 or psi)—— Displays the target oil pressure value of 2346
brake solenoid valve calculated by the oil

TM-64
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
DIAGNOSIS SYSTEM (TCM)
TRG PRE 2346/B
(kPa, kg/cm2 or psi)—— Displays the target oil pressure value of 2346
brake solenoid valve calculated by the oil pres-
sure calculation process of shift change control.
SHIFT PATTERN — — Displays the gear change data using the shift
pattern control.
VEHICLE SPEED (km/h or mph) — — Displays the vehicle speed for control using the
control of TCM.
G SEN SLOPE (%) X — Displays the inclination angle calculated by the
G sensor signal received via CAN communica-
tion.
RANGE SW 4 (ON/OFF) X — Displays the operation status of transmission
range switch 4.
RANGE SW 3 (ON/OFF) X — Displays the operation status of transmission
range switch 3.
RANGE SW 2 (ON/OFF) X — Displays the operation status of transmission
range switch 2.
RANGE SW 1 (ON/OFF) X — Displays the operation status of transmission
range switch 1.
SFT DWN ST SW (ON/OFF) X — Displays the operation status of paddle
shifter (down switch).
Not mounted but displayed.
SFT UP ST SW (ON/OFF) X — Displays the operation status of paddle
shifter (up switch).
Not mounted but displayed.
DOWN SW LEVER (ON/OFF) X — Displays the operation status of selector lever
(down switch).
UP SW LEVER (ON/OFF) X — Displays the operation status of selector lever
(up switch).
NON M-MODE SW (ON/OFF) X — Displays whether the selector lever is in any po-
sition other than manual shift gate position.
MANU MODE SW (ON/OFF) X — Displays whether the selector lever is in the
manual shift gate position.
TOW MODE SW (ON/OFF) — — Displays the reception status of tow mode
switch signal received via CAN communication.
DS RANGE (ON/OFF) — — Displays whether it is the DS mode.
Not mounted but displayed.
1 POSITION SW (ON/OFF) X — Displays the reception status of 1 position
switch signal received via CAN communica-
tion.
Not mounted but displayed.
OD CONT SW (ON/OFF) X — Displays the reception status of overdrive
control switch signal received via CAN com-
munication.
Not mounted but displayed.
BRAKESW (ON/OFF) X — Displays the reception status of stop lamp
switch signal received via CAN communication.
POWERSHIFT SW (ON/OFF) X — Displays the reception status of POWER
mode signal received via CAN communica-
tion.
Not mounted but displayed.
Monitored item (Unit)
Monitor Item Selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM ITEM
Revision: 2010 May2011 QX56

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