Nissan Titan. Manual — part 117
DLN-40
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
P1817 ACTUATOR MOTOR
P1817 ACTUATOR MOTOR
Description
INFOID:0000000009885987
The actuator motor receives signals from the transfer control unit and controls shift rods which shift the trans-
fer case. DTC P1817 or flash code 11 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:0000000009885988
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1817 or flash code 11 detected?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009885989
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.
P1817 ACTUATOR MOTOR
DLN-41
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
Without CONSULT
1. Start engine.
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.
Monitored item
Condition
Display value
SHIFT ACT1
• Vehicle
stopped
• Engine run-
ning
• A/T selector
lever N posi-
tion
• Brake pedal
depressed
4WD shift switch: 2WD to
4H or 4H to 4LO or 2WD to
4LO
ON
Except the above
OFF
SHIFT AC MON1
4WD shift switch: 2WD to
4H or 4H to 4LO or 2WD to
4LO
ON
Except the above
OFF
SHIFT ACT2
4WD shift switch: 4LO to
4H or 4H to 2WD or 4LO to
2WD
ON
Except the above
OFF
SHIFT AC MON2
4WD shift switch: 4LO to
4H or 4H to 2WD or 4LO to
2WD
ON
Except the above
OFF
Connector
Terminal
Condition
Voltage
(Approx.)
E143
28 -
Ground
When 4WD shift switch is operated (While
actuator motor is operating.)
Battery
voltage
→
0V
When 4WD shift switch is not operated
0V
31 -
Ground
Always
0V
42 -
Ground
• Vehicle
stopped
• Engine run-
ning
• A/T selector
lever N posi-
tion
• Brake pedal
depressed
4WD shift switch: 2WD to
4H or 4H to 4LO or 2WD to
4LO
0V
Except the above
Battery
voltage
E143
47 -
Ground
• Vehicle
stopped
• Engine run-
ning
• A/T selector
lever N posi-
tion
• Brake pedal
depressed
4WD shift switch: 2WD to
4H or 4H to 4LO or 2WD to
4LO
Battery
voltage
→
0V
Except the above
0V
48 -
Ground
4WD shift switch: 4LO to
4H or 4H to 2WD or 4LO to
2WD
Battery
voltage
→
0V
Except the above
0V
50 -
Ground
4WD shift switch: 4LO to
4H or 4H to 2WD or 4LO to
2WD
0V
Except the above
Battery
voltage
WDIA0144E
DLN-42
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
P1817 ACTUATOR MOTOR
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 2.
2.
CHECK ACTUATOR MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector.
3. Check voltage between transfer control unit harness connector
terminal 27 and ground.
4. Turn ignition switch ON.
5. Check voltage between transfer control unit harness connector
terminal 27 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> 1. Check harness for short or open between transfer
control unit harness connector E143 terminal 27
and transfer shut off relay 2 harness connector E47
terminal 3 and 10A fuse (No. 26, located in the fuse and fusible link box). If any items are
damaged, repair or replace damaged parts.
2. Perform trouble diagnosis for power supply circuit. Refer to
3.
CHECK TRANSFER SHIFT RELAY POWER SUPPLY CIRCUIT
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 Loca-
3. Check voltage between transfer shift high/low relay harness
connector terminals and ground.
Connector
Terminal
Voltage (Approx.)
E143
27 - Ground
0V
SDIA2808E
Connector
Terminal
Voltage (Approx.)
E143
27 - Ground
Battery voltage
SDIA2807E
Connector
Terminal
Voltage (Approx.)
A: E156
2 - Ground
0V
B: E157
2 - Ground
0V
WDIA0319E
P1817 ACTUATOR MOTOR
DLN-43
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TX15B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
4. Turn ignition switch ON. (Do not start engine.)
5. Check voltage between transfer shift high/low relay harness
connector terminals and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Check the following. If any items are damaged, repair
or replace damaged parts.
• Harness for short or open between transfer control unit harness connector terminal 27 and
transfer shift high relay harness connector E156 terminal 2.
• Harness for short or open between transfer control unit harness connector terminal 27 and
transfer shift low relay harness connector terminal E157 terminal 2.
4.
CHECK TRANSFER SHIFT RELAY
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay.
3. Apply 12V direct current between transfer shift high relay and
transfer shift low relay terminals 1 and 2.
4. Check continuity between relay terminals 3 and 4, 3 and 5.
OK or NG
OK
>> GO TO 5.
NG
>> Replace the transfer relay.
5.
CHECK (1) HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER SHIFT RELAY
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector.
3. Remove transfer shift high relay and transfer shift low relay.
4. Check continuity between the following terminals.
-
Transfer control unit harness connector E143 (A) terminal 42
and transfer shift high relay harness connector E156 (B) termi-
nal 1.
-
Transfer control unit harness connector E143 (A) terminal 50
and transfer shift low relay harness connector E157 (C) terminal
1.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace damaged parts.
6.
CHECK (2) HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER SHIFT RELAY
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector.
3. Remove transfer shift high relay and transfer shift low relay.
Connector
Terminal
Voltage (Approx.)
A: E156
2 - Ground
Battery voltage
B: E157
2 - Ground
Battery voltage
WDIA0320E
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
Continuity should exist.
WDIA0321E
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