2009 INFINITI QX56 Factory Service Manual

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Page 1089 of 4171

INFINITI QX56 2009 Factory Service Manual
P1813 4WD SHIFT SWITCHDLN-33
< COMPONENT DIAGNOSIS > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
3. Operate 4WD shift switch and check continuity between 4WD shift switch terminals.
Are inspection resu

Page 1090 of 4171

INFINITI QX56 2009 Factory Service Manual
DLN-34
< COMPONENT DIAGNOSIS >[ATX14B]
P1813 4WD SHIFT SWITCH
4. If the inspection results are abnormal replace the 4WD shift switch.
1 - 44WD shift switch: 2WD No
4WD shift switch: AUTO, 4H and
4LO

Page 1091 of 4171

INFINITI QX56 2009 Factory Service Manual
P1814 WAIT DETECTION SWITCHDLN-35
< COMPONENT DIAGNOSIS > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
P1814 WAIT DETECTION SWITCH
DescriptionINFOID:0000000003772101
The wait detection switch detects if

Page 1092 of 4171

INFINITI QX56 2009 Factory Service Manual
DLN-36
< COMPONENT DIAGNOSIS >[ATX14B]
P1814 WAIT DETECTION SWITCH
Are inspection results normal?
YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK HARNESS BETWEEN TRANSFER CONT
ROL UNIT AND WAIT DETECTION SWI

Page 1093 of 4171

INFINITI QX56 2009 Factory Service Manual
P1814 WAIT DETECTION SWITCHDLN-37
< COMPONENT DIAGNOSIS > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
4. Push and release wait detection switch and check continuity between wait detection switch termin

Page 1094 of 4171

INFINITI QX56 2009 Factory Service Manual
DLN-38
< COMPONENT DIAGNOSIS >[ATX14B]
P1816 TRANSMISSION RANGE SWITCH
P1816 TRANSMISSION RANGE SWITCH
DescriptionINFOID:0000000003772105
The transmission range switch transmits the A/T positi
on ind

Page 1095 of 4171

INFINITI QX56 2009 Factory Service Manual
P1817 ACTUATOR MOTORDLN-39
< COMPONENT DIAGNOSIS > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
P1817 ACTUATOR MOTOR
DescriptionINFOID:0000000003772108
The actuator motor receives signals from the trans

P1817 ACTUATOR MOTORDLN-39
< COMPONENT DIAGNOSIS > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
P1817 ACTUATOR MOTOR
DescriptionINFOID:0000000003772108
The actuator motor receives signals from the transfer c ontrol unit and controls shift rods which shift the trans-
fer case. DTC P1817 will set when any of the following occur:
Motor does not operate properly due to open or short circuit in actuator motor.
Malfunction is detected in the actuator motor. (W hen 4WD shift switch is operated and actuator motor does
not operate)
Malfunction is detected in transfer shift high relay or transfer shift low relay.
DTC LogicINFOID:0000000003772109
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1817 detected?
YES >> Perform diagnosis procedure. Refer to DLN-39, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000003772110
1.CHECK ACTUATOR MOTOR SIGNAL
With CONSULT-III
1. Start engine.
2. Select DATA MONITOR mode for ALL MODE AWD/4WD with CONSULT-III.
3. Read out the value of SHIFT ACT1, SHIFT AC MON1, SHIFT ACT2 and SHIFT AC MON2.
DTC CONSULT-III Diagnostic item is detected when... Reference
[P1817] SHIFT ACTUATOR Motor does not operate properly due
to open or short circuit in actuator mo-
tor.
Malfunction is detected in the actuator motor. (When 4WD shift switch is op-
erated and actuator motor is not oper-
ated)
Malfunction is detected in transfer shift
high relay and transfer shift low relay. Refer to
DLN-39
.
Monitored
item Condition Display
value
SHIFT ACT1 Vehicle stopped
Engine running
A/T selector lever N position
Brake pedal depressed 4WD shift switch: 4H
to 4LO (Wait function
is operating.)
ON
Except the above OFF
SHIFT AC
MON1 Vehicle stopped
Engine running
A/T selector lever N position
Brake pedal depressed 4WD shift switch: 4H
to 4LO (Wait function
is operating.)
ON
Except the above OFF
SHIFT ACT2 Vehicle stopped
Engine running
A/T selector lever N position
Brake pedal depressed 4WD shift switch:
4LO to 4H (Wait func-
tion is operating.)
ON
Except the above OFF
Revision: December 20092009 QX56

Page 1096 of 4171

INFINITI QX56 2009 Factory Service Manual
DLN-40
< COMPONENT DIAGNOSIS >[ATX14B]
P1817 ACTUATOR MOTOR
Without CONSULT-III
1. Start engine.
2. Check voltage between transfer control unit harness connector
terminal and ground.
Are the inspecti

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