Nissan Titan. Manual — part 118
DLN-44
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
P1817 ACTUATOR MOTOR
4. Check continuity between the following terminals.
-
Transfer control unit harness connector E143 (A) terminal 28
and transfer shift high relay harness connector E156 (B) termi-
nal 5.
-
Transfer control unit harness connector E143 (A) terminal 28
and transfer shift low relay harness connector E157 (C) terminal
5.
-
Transfer control unit harness connector E143 (A) terminal 31
and transfer shift high relay harness connector E156 (B) termi-
nal 4.
-
Transfer control unit harness connector E143 (A) terminal 31
and transfer shift low relay harness connector E157 (C) terminal
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace damaged parts.
7.
CHECK ACTUATOR MOTOR OPERATION CIRCUIT
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the transfer control device harness connector.
3. Check continuity between the following terminals.
-
Transfer control unit harness connector E143 terminal 48 and
transfer control device (actuator motor) harness connector F58
terminal 23.
-
Transfer control unit harness connector E143 terminal 47 and
transfer control device (actuator motor) harness connector F58
terminal 24.
-
Transfer control device (actuator motor) harness connector F58
(A) terminal 24 and transfer shift high relay harness connector
E156 (B) terminal 3.
-
Transfer control device (actuator motor) harness connector F58
(A) terminal 23 and transfer shift low relay harness connector
E157 (C) terminal 3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace damaged parts.
8.
CHECK ACTUATOR MOTOR
1. Remove transfer control device. Refer to
DLN-96, "Removal and Installation"
Continuity should exist.
AWDIA0056ZZ
SDIA2811E
Continuity should exist.
WDIA0323E
P1817 ACTUATOR MOTOR
DLN-45
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
C
E
F
G
H
I
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K
L
M
A
B
DLN
N
O
P
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.
Does actuator motor rotate?
YES
>> GO TO 9.
NO
>> Replace transfer control device.
9.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
OK or NG
OK
>> GO TO 10.
NG
>> 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.
OK or NG
OK
>> Inspection End.
NG
>> Replace transfer control unit. Refer to
DLN-91, "Removal and Installation"
.
Component Inspection
INFOID:0000000009885990
ACTUATOR MOTOR
1. Remove transfer control device. Refer to
DLN-96, "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.
TRANSFER RELAY
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay. Refer to
DLN-12, "Component Parts Location"
.
3. Apply 12V direct current between transfer relay terminals 1 and 2.
Terminal
Actuator motor
24 (Battery voltage) - 23 (Ground)
Clockwise rotate
23 (Battery voltage) - 24 (Ground)
Counterclockwise rotate
SDIA2386E
Terminal
Actuator motor
24 (Battery voltage) - 23 (Ground)
Clockwise rotate
23 (Battery voltage) - 24 (Ground)
Counterclockwise rotate
SDIA2386E
DLN-46
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
P1817 ACTUATOR MOTOR
4. Check continuity between relay terminals 3 and 4, and 3 and 5.
5. If NG, replace transfer shift high or low relay.
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
WIIA0291E
P1818 ACTUATOR POSITION SWITCH
DLN-47
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
P1818 ACTUATOR POSITION SWITCH
Description
INFOID:0000000009885991
The actuator position switch detects the current actuator motor range. DTC P1818 or flash code 12 will set if
either of the following 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:0000000009885992
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1818 or flash code 12 detected?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009885993
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
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