Nissan Frontier. Instruction — part 284
DLN-38
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
P1816 PNP SWITCH (M/T)
P1816 PNP SWITCH (M/T)
Description
INFOID:0000000009479662
The M/T PNP switch signals neutral position to the transfer control unit. DTC P1816 will set when the M/T
PNP switch signal is malfunctioning.
DTC Logic
INFOID:0000000009479663
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1816 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009479664
Regarding Wiring Diagram information, refer to
.
1.
CHECK PARK/NEUTRAL POSITION SWITCH SIGNAL
1. Turn ignition switch ON.
2. Check voltage between transfer control unit harness connector
M153 terminal 33 and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND PARK/NEUTRAL POSITION SWITCH
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the park/neutral position switch harness connec-
tor.
DTC
CONSULT
Diagnostic item is detected when...
Reference
[P1816]
PNP SW/CIRC
When M/T PNP switch signal is malfunc-
tion.
Connector
Terminal
Condition
Voltage
(Approx.)
M153
33 -
Ground
Ignition switch: ON
M/T shift lever neutral
position
0V
Except the above
Battery
voltage
WDIA0245E
P1816 PNP SWITCH (M/T)
DLN-39
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
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DLN
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3. Check continuity between transfer control unit harness connec-
tor M153 terminal 33 and park/neutral position switch harness
connector F66 terminal 1.
Also check harness for short to ground and short to power.
Is the inspection result normal?
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. Disconnect park/neutral position switch harness connector.
3. Check continuity between park/neutral position switch harness
connector F66 terminal 2 and ground.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit or short to power in harness or con-
nectors.
4.
CHECK PARK/NEUTRAL POSITION SWITCH
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove park/neutral position switch. Refer to
DLN-13, "Component Parts Location"
.
3. Push and release park/neutral position switch and check conti-
nuity between park/neutral position switch terminals 1 and 2.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace park/neutral position switch. Refer to
5.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Is the inspection result normal?
YES
>> Inspection End.
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.
Component Inspection
INFOID:0000000009479665
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect neutral position switch harness connector.
3. Remove neutral position switch. Refer to
DLN-13, "Component Parts Location"
Continuity should exist.
WDIA0246E
Continuity should exist.
WDIA0247E
Terminal
Condition
Continuity
1 - 2
Push park/neutral position switch
Yes
Release park/neutral position
switch
No
WDIA0273E
DLN-40
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
P1816 PNP SWITCH (M/T)
4. Push and release neutral position switch and check continuity
between neutral position switch terminals 1 and 2.
5. If NG, replace the neutral position switch.
Terminal
Condition
Continuity
1 - 2
Push neutral position switch
Yes
Release neutral position switch
No
WDIA0273E
P1817 ACTUATOR MOTOR
DLN-41
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
C
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DLN
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P1817 ACTUATOR MOTOR
Description
INFOID:0000000009479666
The actuator motor receives signals from the transfer control 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. (When 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 Logic
INFOID:0000000009479667
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
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009479668
Regarding Wiring Diagram information, refer to
.
1.
CHECK ACTUATOR MOTOR SIGNAL
With CONSULT
1. Start engine.
2. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT.
3. Read out the value of “SHIFT ACT1”, “SHIFT AC MON1”, “SHIFT ACT2”, “SHIFT AC MON2”.
DTC
CONSULT
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 or transfer shift low relay.
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