Infiniti QX56 (Z62). Manual — part 468
DLN-72
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX90A]
P181A TRANSFER MOTOR TEMPERATURE SENSOR
P181A TRANSFER MOTOR TEMPERATURE SENSOR
DTC Logic
INFOID:0000000006222271
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Start the engine and drive at 40 km/h (25 MPH) or more for approximately 1minute.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P181A” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006222272
1.
CHECK TRANSFER MOTOR TEMPERATURE SENSOR POWER SUPPLY
1.
Turn the ignition switch OFF.
2.
Disconnect transfer control actuator harness connector.
3.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
4.
Check the voltage between transfer control actuator harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK TRANSFER MOTOR TEMPERATURE SENSOR CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect transfer control unit harness connector.
3.
Check the continuity between transfer control unit harness connector and transfer control actuator har-
ness connector.
4.
Check the continuity between transfer control actuator harness connector and ground.
DTC
Display item
Malfunction detected condition
Possible cause
P181A
MOTOR TEMP SEN
When vehicle speed is 40km/h or more
and transfer motor temperature is lower
than normal
Transfer control actuator
• Malfunction of transfer motor temper-
ature sensor circuit. (open)
When transfer motor temperature is
higher than normal
Transfer control actuator
• Malfunction of transfer motor temper-
ature sensor circuit. (short)
+
−
Voltage
Transfer control actuator
Connector
Terminal
F52
4
7
Approx. 5 V
Transfer control unit
Transfer control actuator
Continuity
Connector
Terminal
Connector
Terminal
E59
28
F52
4
Existed
9
7
P181A TRANSFER MOTOR TEMPERATURE SENSOR
DLN-73
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX90A]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
3.
CHECK TRANSFER MOTOR TEMPERATURE SENSOR
Check the transfer control actuator. Refer to
DLN-73, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Transfer motor temperature sensor is malfunctioning. Replace transfer control actuator. Refer to
.
4.
CHECK TERMINALS AND HARNESS CONNECTORS
Check the pin terminals for damage or loose connection with each harness connector.
Is the inspection result normal?
YES
>> Replace transfer control unit. Refer to
DLN-107, "Removal and Installation"
NO
>> Repair or replace error-detected parts.
Component Inspection
INFOID:0000000006222273
1.
CHECK TRANSFER MOTOR TEMPERATURE SENSOR
1.
Turn the ignition switch OFF.
2.
Disconnect transfer control actuator harness connector.
3.
Check the resistance between transfer control actuator harness connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Transfer motor temperature sensor is malfunctioning. Replace transfer control actuator. Refer to
.
Transfer control actuator
—
Continuity
Connector
Terminal
F52
7
Ground
Not existed
Transfer control actuator
Condition
Resistance
Terminal
4
7
20
°
C (68
°
F)
Approx. 12.5 k
Ω
80
°
C (176
°
F)
Approx. 1.3 k
Ω
DLN-74
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX90A]
P181B INCOMPLETE SELFSHUT
P181B INCOMPLETE SELFSHUT
DTC Logic
INFOID:0000000006222274
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch OFF.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P181B” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006222275
1.
CHECK TRANSFER CONTROL UNIT POWER SUPPLY (1)
1.
Turn the ignition switch OFF.
2.
Disconnect transfer control unit harness connector.
3.
Check the voltage between transfer control unit harness connector and ground.
4.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
5.
Check the voltage between transfer control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK TRANSFER CONTROL UNIT POWER SUPPLY (2)
1.
Turn the ignition switch OFF.
2.
Check the 10A fuse (#34).
3.
Check the harness for open or short between transfer control unit harness connector No.20 terminal and
10A (#34).
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit. Refer to
NO
>> Repair or replace error-detected parts.
3.
CHECK TRANSFER CONTROL UNIT GROUND
1.
Turn the ignition switch OFF.
DTC
Display item
Malfunction detected condition
Possible cause
P181B
IMCOMP SELFSHUT
When ignition switch is OFF and transfer
control unit power supply is lower or
higher than normal
Self-shut is incomplete.
Transfer control unit
—
Voltage
Connector
Terminal
E59
20
Ground
Battery voltage
Transfer control unit
—
Voltage
Connector
Terminal
E59
20
Ground
Battery voltage
P181B INCOMPLETE SELFSHUT
DLN-75
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX90A]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
2.
Check the continuity between transfer control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK TERMINALS AND HARNESS CONNECTORS
Check transfer control unit pin terminals for damage or loose connection with harness connector.
Is inspection result normal?
YES
>> After turning the ignition switch OFF, perform DTC confirmation procedure again. When DTC
"P181B" is detected, Replace transfer control unit. Refer to
DLN-107, "Removal and Installation"
.
NO
>> Repair or replace error-detected parts.
Transfer control unit
—
Continuity
Connector
Terminal
E60
44
Ground
Existed
46
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст