Infiniti QX56 (JA60). Manual - part 293

TRANSFER CONTROL UNIT

DLN-95

< ECU DIAGNOSIS >

[ATX14B]

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DLN

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ABDIA0359GB

DLN-96

< ECU DIAGNOSIS >

[ATX14B]

TRANSFER CONTROL UNIT

ABDIA0315GB

TRANSFER CONTROL UNIT

DLN-97

< ECU DIAGNOSIS >

[ATX14B]

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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.

Refer to 

DLN-25

.

[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.

Refer to 

DLN-27

.

[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.

Refer to 

DLN-28

.

[P1809]

CONTROL UNIT 4

AD converter system of transfer control unit is mal-
functioning.

Refer to 

DLN-25

.

[P1810]

4L POSI SW TF

Improper signal from neutral-4LO switch is input due 
to open or short circuit.

Refer to 

DLN-29

.

[P1811]

BATTERY VOLTAGE

Power supply voltage for transfer control unit is ab-
normally low while driving.

Refer to 

DLN-22

.

[P1813]

4WD MODE SW

More than two switch inputs are simultaneously de-
tected due to short circuit of 4WD shift switch.

Refer to 

DLN-32

.

[P1814]

4WD DETECT SWITCH

Improper signal from wait detection switch is input 
due to open or short circuit.

Refer to 

DLN-36

.

[P1816]

PNP SW/CIRC

When transmission range switch signal is malfunc-
tion or communication error between the control 
units.

Refer to 

DLN-39

.

[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.

Refer to 

DLN-40

.

[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.

Refer to 

DLN-46

.

[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.

Refer to 

DLN-49

.

[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.

Refer to 

DLN-53

.

[P1822]

DUTY SOLENOID

Proper voltage is not applied to clutch pressure so-
lenoid valve due to open or short circuit.

Refer to 

DLN-54

.

[P1823]

2-4WD SOLENOID

Proper voltage is not applied to 2-4WD solenoid 
valve due to open or short circuit.

Refer to 

DLN-58

.

[P1824]

MOTOR RELAY

Motor does not operate properly due to open or 
short circuit in transfer motor or transfer motor relay.

Refer to 

DLN-62

.