Infiniti QX56 (JA60). Manual — part 293
TRANSFER CONTROL UNIT
DLN-95
< ECU DIAGNOSIS >
[ATX14B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
ABDIA0359GB
DLN-96
< ECU DIAGNOSIS >
[ATX14B]
TRANSFER CONTROL UNIT
ABDIA0315GB
TRANSFER CONTROL UNIT
DLN-97
< ECU DIAGNOSIS >
[ATX14B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
DTC Index
INFOID:0000000005148855
DTC CHART
ABDIA0038GB
DLN-98
< ECU DIAGNOSIS >
[ATX14B]
TRANSFER CONTROL UNIT
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1802]
CONTROL UNIT 1
Malfunction is detected in the memory (RAM) sys-
tem of transfer control unit.
[P1803]
CONTROL UNIT 2
Malfunction is detected in the memory (ROM) sys-
tem of transfer control unit.
[P1804]
CONTROL UNIT 3
Malfunction is detected in the memory (EEPROM)
system of transfer control unit.
[P1807]
VHCL SPEED SEN·AT
• Malfunction is detected in output shaft revolution
signal that is output from TCM through CAN com-
munication.
• Improper signal is input while driving.
[P1808]
VHCL SPEED SEN·ABS
• Malfunction is detected in vehicle speed signal
that is output from ABS actuator and electric unit
(control unit) through CAN communication.
• Improper signal is input while driving.
[P1809]
CONTROL UNIT 4
AD converter system of transfer control unit is mal-
functioning.
[P1810]
4L POSI SW TF
Improper signal from neutral-4LO switch is input due
to open or short circuit.
[P1811]
BATTERY VOLTAGE
Power supply voltage for transfer control unit is ab-
normally low while driving.
[P1813]
4WD MODE SW
More than two switch inputs are simultaneously de-
tected due to short circuit of 4WD shift switch.
[P1814]
4WD DETECT SWITCH
Improper signal from wait detection switch is input
due to open or short circuit.
[P1816]
PNP SW/CIRC
When transmission range switch signal is malfunc-
tion or communication error between the control
units.
[P1817]
SHIFT ACTUATOR
• Motor does not operate properly due to open or
short circuit in actuator motor.
• Malfunction is detected in the actuator motor.
(When 4WD shift switch is operated and actuator
motor is not operated)
• Malfunction is detected in transfer shift high relay
and transfer shift low relay.
[P1818]
SHIFT ACT POSI SW
• Improper signal from actuator position switch is in-
put due to open or short circuit.
• Malfunction is detected in the actuator position
switch.
[P1819]
SHIFT ACT CIR
• Transfer control device actuator circuit is shorted
or open. (Malfunctions are detected when transfer
shift relay circuit is open/shorted or relay monitor
circuit is open/shorted.)
• Malfunction occurs in transfer control device drive
circuit.
• Malfunction is detected in transfer shut off relay.
[P1820]
ENGINE SPEED SIG
• Malfunction is detected in engine speed signal
that is output from ECM through CAN communi-
cation.
• Improper signal is input while driving.
[P1822]
DUTY SOLENOID
Proper voltage is not applied to clutch pressure so-
lenoid valve due to open or short circuit.
[P1823]
2-4WD SOLENOID
Proper voltage is not applied to 2-4WD solenoid
valve due to open or short circuit.
[P1824]
MOTOR RELAY
Motor does not operate properly due to open or
short circuit in transfer motor or transfer motor relay.
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