Nissan Frontier. Manual — part 286
DLN-46
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
P1817 ACTUATOR MOTOR
Does actuator motor rotate?
YES
>> GO TO 9.
NO
>> Replace transfer control device (actuator motor).
9.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 10.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
10.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Is DTC P1817 displayed?
YES
>> Replace transfer control unit. Refer to
DLN-92, "Removal and Installation"
.
NO
>> Inspection End.
Component Inspection
INFOID:0000000009479669
ACTUATOR MOTOR
1. Remove transfer control device. Refer to
DLN-97, "Removal and Installation"
2. Check operation by applying battery voltage to transfer control device (actuator motor) terminals 23 and
24.
CAUTION:
Be careful not to overheat the harness.
3. If the inspection results are abnormal replace the transfer control device (actuator motor).
TRANSFER RELAY
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay 2. Refer to
DLN-13, "Component Parts Loca-
3. Apply 12V direct current between transfer shift high and low relay terminals 1 and 2.
4. Check continuity between relay terminals 3 and 4, and 3 and 5.
5. If the inspection results are abnormal replace the transfer shift
high or low relay.
Terminal
Actuator motor
24 (Battery voltage) - 23 (Ground)
Clockwise rotate
23 (Battery voltage) - 24 (Ground)
Counterclockwise rotate
Terminal
Condition
Continuity
3 - 4
12V direct current supply between terminals 1 and 2
No
OFF
Yes
3 - 5
12V direct current supply between terminals 1 and 2
Yes
OFF
No
LDIA0099E
P1818 ACTUATOR POSITION SWITCH
DLN-47
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
C
E
F
G
H
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J
K
L
M
A
B
DLN
N
O
P
P1818 ACTUATOR POSITION SWITCH
Description
INFOID:0000000009479670
The actuator position switch detects the current actuator motor range. DTC P1818 will set if either of the fol-
lowing occur:
• Improper signal from actuator position switch is input due to open or short circuit.
• Malfunction is detected in actuator position switch.
DTC Logic
INFOID:0000000009479671
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1818 detected?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009479672
Regarding Wiring Diagram information, refer to
.
1.
CHECK ACTUATOR POSITION SWITCH SIGNAL
With CONSULT
1. Start engine.
2. Depress brake pedal and stop vehicle.
3. Set A/T selector lever to "N" position.
4. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT.
5. Read out the value of “SHIFT POS SW1”, “SHIFT POS SW2”, “SHIFT POS SW3”, “SHIFT POS SW4”.
Without CONSULT
1. Start engine.
DTC
CONSULT
Diagnostic item is detected when...
Reference
[P1818]
SHIFT ACT POSI SW
• Improper signal from actuator position
switch is input due to open or short cir-
cuit.
• Malfunction is detected in actuator po-
sition switch.
Monitored item
Condition
Display value
SHIFT POS SW1
4WD shift switch: 2WD and 4LO
ON
4WD shift switch: 4H
OFF
SHIFT POS SW2
4WD shift switch: 4LO
ON
4WD shift switch: 2WD and 4H
OFF
SHIFT POS SW3
4WD shift switch: 2WD and 4H
ON
4WD shift switch: 4LO
OFF
SHIFT POS SW4
4WD shift switch: 4H and 4LO
ON
4WD shift switch: 2WD
OFF
DLN-48
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
P1818 ACTUATOR POSITION SWITCH
2. Depress brake pedal and stop vehicle.
3. Set A/T selector lever to "N" position.
4. Check voltage between transfer control unit harness connector
terminal and ground.
Are the inspection results normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ACTUATOR POSITION SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the transfer control device (actuator position
switch) harness connector.
3. Check continuity between the following terminals.
-
Transfer control unit harness connector M152 terminal 10 and transfer control device (actuator position
switch) harness connector F58 terminal 26.
-
Transfer control unit harness connector M152 terminal 11 and transfer control device (actuator position
switch) harness connector F58 terminal 20.
-
Transfer control unit harness connector M152 terminal 12 and transfer control device (actuator position
switch) harness connector F58 terminal 21.
-
Transfer control unit harness connector M152 terminal 13 and transfer control device (actuator position
switch) harness connector F58 terminal 25.
Also check harness for short to ground and short to power.
Is there continuity?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Check continuity between transfer control device (actuator posi-
tion switch) harness connector F58 terminal 22 and ground.
Also check harness for short to power.
Is there continuity?
YES
>> GO TO 4.
NO
>> Repair open circuit or short to power in harness or con-
nectors.
Connector
Terminal
Condition
Voltage
(Approx.)
M152
10 -
Ground
4WD shift switch: 2WD and 4LO
0V
4WD shift switch: 4H
Battery
voltage
11 -
Ground
4WD shift switch: 4LO
0V
4WD shift switch: 2WD and 4H
Battery
voltage
12 -
Ground
4WD shift switch: 2WD and 4H
0V
4WD shift switch: 4LO
Battery
voltage
13 -
Ground
4WD shift switch: 4H and 4LO
0V
4WD shift switch: 2WD
Battery
voltage
SDIA3369E
Continuity should exist.
Continuity should exist.
SDIA2815E
P1818 ACTUATOR POSITION SWITCH
DLN-49
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
4.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 5.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
5.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Is DTC P1818 displayed?
YES
>> Replace transfer control device. Refer to
DLN-97, "Removal and Installation"
.
NO
>> Inspection End.
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