Infiniti QX56 (Z62). Manual — part 455
DLN-20
< SYSTEM DESCRIPTION >
[TRANSFER: ATX90A]
SYSTEM
4WD Warning Lamp
• Turns ON when there is a malfunction in 4WD system. 4WD warning lamp indicates the vehicle is in fail-safe
mode.
• Also turns ON when ignition switch is turned ON, for the purpose of lamp check. Turns OFF approximately
for 1 second after the engine starts if system is normal.
ATP Warning Lamp
When the A/T shift selector is in P position, the vehicle may move if the transfer case in neutral. ATP warning
lamp is turned on to indicate this condition to the driver.
CONDITION FOR OPERATE WARNING BUZZER
For preventing an incorrect operation during 4H
⇔
4L switching, warning buzzer sounds from inside of transfer
control unit and warns the driver, when certain conditions are satisfied.
4WD SYSTEM : Fail-Safe
INFOID:0000000006303692
• If any malfunction occurs in 4WD electrical system, and control unit detects the malfunction, 4WD warning
lamp on combination meter turns ON to indicate system malfunction.
• When 4WD warning lamp is ON, vehicle changes to rear-wheel drive or shifts to 4-wheel drive (front-wheels
still have some driving torque).
Condition
4WD warning lamp
Lamp check
Turns ON when ignition switch is turned ON. Turns OFF ap-
prox. 1 second after the engine start.
4WD system malfunction
ON
Protection function is activated due to heavy load to transfer assem-
bly. (4WD system is not malfunctioning.)
Quick blinking: 2 times/second
(Blinking in approx. 1 minute and then turning OFF)
Large difference in diameter of front/rear tires
Slow blinking: 1 time/2 seconds
(Continuing to blink until turning ignition switch OFF)
Other than above (system normal)
OFF
Condition
Warning buzzer
4WD shift status
A/T shift selector
Engine speed
4H
⇔
4L
N range
350
−
1.600 rpm
OFF
Under 350 rpm or over 1.600 rpm
ON
Except N range
Always
DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)
DLN-21
< SYSTEM DESCRIPTION >
[TRANSFER: ATX90A]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)
CONSULT-III Function
INFOID:0000000006222226
FUNCTION
CONSULT-III can display each diagnostic item using the diagnostic test modes as follows.
*
: The following diagnosis information is erased by erasing.
• DTC
ECU IDENTIFICATION
Transfer control unit part number can be read.
SELF DIAGNOSTIC RESULT
.
When "0" is displayed on self-diagnosis result.
• The system is presently malfunctioning.
When except "0" is displayed on self-diagnosis result.
• System malfunction in the past is detected, but the system is presently normal.
NOTE:
Each time when ignition switch is turned OFF to ON, numerical number increases in 1
→
2
→
3...110
→
111.
When the operation number of times exceeds 111, the number do not increase and “111” is displayed until
self-diagnosis is erased
*
.
*: For “U1000” and “U1010”, the maximum value is “39”.
DATA MONITOR
X:Applicable
Diagnostic test mode
Function
ECU Identification
Transfer control unit part number can be read.
Self Diagnostic Result
Self-diagnostic results can be read and erased quickly.*
Data Monitor
Input/Output data in the transfer control unit can be read.
Work Support
This mode enables a technican to adjust some devices faster and more accurately by following the
indications on the CONSULT-III
Monitor item (Unit)
SELECT MONITOR ITEM
Remarks
ECU INPUT
SIGNALS
MAIN SIG-
NALS
4WD MODE [BOTNG/SWTNG/4L/4H/AUTO]
X
Control status of 4WD mode is displayed.
2WD SW [On/Off]
X
4WD shift switch (2WD) is not equipped, but it
is displayed.
AUTO SW [On/Off]
X
4WD shift switch signal (AUTO) is displayed.
4H SW [On/Off]
X
4WD shift switch signal (4H) is displayed.
4L SW [On/Off]
X
4WD shift switch signal (4L) is displayed.
T/M RANGE [D/N/R/P]
X
A/T shift selector position via CAN communica-
tion line is displayed.
N RANGESW [On/Off]
X
A/T shift selector position (N) via CAN commu-
nication line is displayed.
R RANGE SW [On/Off]
X
A/T shift selector position (R) via CAN commu-
nication line is displayed.
ING SW [On/Off]
X
Ignition switch status is displayed.
TCS OPER [On/Off]
X
TCS operation status via CAN communication
line is displayed.
VDC OPER [On/Off]
X
VDC operation status via CAN communication
line is displayed.
DLN-22
< SYSTEM DESCRIPTION >
[TRANSFER: ATX90A]
DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)
ABS OPER [On/Off]
X
ABS operation status via CAN communication
line is displayed.
SAND MODE IND [On/Off]
This indicator is not equipped, but it is dis-
played.
ROCK MODE IND [On/Off]
This indicator is not equipped, but it is dis-
played.
SNOW MODE IND [On/Off]
This indicator is not equipped, but it is dis-
played.
ONROAD MODE IND [On/Off]
This indicator is not equipped, but it is dis-
played.
SAND MODE SW [On/Off]
X
This switch is not equipped, but it is displayed.
ROCK MODE SW [On/Off]
X
This switch is not equipped, but it is displayed.
SNOW MODE SW [On/Off]
X
This switch is not equipped, but it is displayed.
ONROAD MODE SW [On/Off]
X
This switch is not equipped, but it is displayed.
HI/LO POSI SEN 3 [On/Off]
X
Transfer Hi-Lo position sensor (3) status is dis-
played.
HI/LO POSI SEN 1 [On/Off]
X
Transfer Hi-Lo position sensor (1) status is dis-
played.
LOCK POSI SEN [OPEN/LOCK/BAT/UNLEAN/HI
TEMP/ERROR/GND]
X
Transfer lock position sensor signal is dis-
played.
ATP IND [On/Off]
Control status of ATP warning lamp is dis-
played.
4WD FAILLAMP [On/Off]
X
Control status of ATP warning lamp is dis-
played.
4WD MODE IND [4L/LOCK/AUTO]
X
Control status of 4WD mode indicator lamp is
displayed.
(LOCK means 4H of 4WD mode)
MOTOR DRIVE B [HI/LO/PWM]
X
Driving status of transfer motor is displayed.
(Reverse side)
MOTOR DRIVE A [HI/LO/PWM]
X
Driving status of transfer motor is displayed.
(Drive side)
FLUID TEMP SEN [V]
X
Temperature of transfer fluid is displayed.
MOTOR TEMP [V]
X
Temperature of transfer motor is displayed.
C/U POWER SUP [V]
X
Power supply voltage value of transfer control
unit is displayed.
MOTOR POWER SUP [V]
X
Power supply voltage value of transfer motor
unit is displayed.
ROTARY POSI SEN [%]
X
Transfer rotary position sensor signal is dis-
played.
THRTL POSI SEN [%]
X
X
Throttle opening status via CAN communica-
tion line is displayed.
AT R SPEED [km/h]
X
Output shaft revolution speed via CAN commu-
nication line is displayed.
T/M GEAR [0 - 7]
X
Current transmission gear via CAN communi-
cation line is displayed.
COMPR VHCL SPEED [km/h]
X
Vehicle speed calculated by transfer control
unit is displayed.
VHCL/S SEN-FR [km/h]
X
Wheel speed (front) average calculated by
transfer control.
Monitor item (Unit)
SELECT MONITOR ITEM
Remarks
ECU INPUT
SIGNALS
MAIN SIG-
NALS
DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)
DLN-23
< SYSTEM DESCRIPTION >
[TRANSFER: ATX90A]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
WORK SUPPORT
*
: “LOCK SLEEVE SENSOR” means transfer lock position sensor.
VHCL/S SEN-RR [km/h]
X
Wheel speed (rear) average calculated by
transfer control.
ENG SPEED [rpm]
X
Engine status via CAN communication line is
displayed.
INTERNL SPEED SEN [count]
X
Transfer internal speed sensor status is dis-
played.
TRANSFER TORQUE [Nm]
X
Commanded transfer communication torque is
displayed.
UNIT PARAMETER [A1 - A9, B1 - B9, C1 - C9, D1
- D9, E1 - E9, F1 - F9, G1 - G9, H1 - H9, J1 - J9]
Unit parameter of transfer recognized by trans-
fer control unit is displayed.
Monitor item (Unit)
SELECT MONITOR ITEM
Remarks
ECU INPUT
SIGNALS
MAIN SIG-
NALS
Function
Description
UNIT CHARACTERISTIC WRITE
Writes the unit parameter of transfer to transfer control unit.
START CALIBRATION
Perform initial calibration of transfer control unit.
LOCK SLEEVE SENSOR
*
INITIALIZE
Format learning the transfer lock position sensor written to transfer control unit.
LOCK SLEEVE SENSOR
*
LEARNING
Perform learning the transfer lock position sensor.
OIL DETERIORATION INFO RESET
Format the transfer fluid viscosity written to transfer control unit.
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