Nissan Quest E52. Instruction — part 1060
MOTOR SENSOR
SE-69
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK MOTOR SENSOR (RH) POWER SUPPLY CIRCUIT
1.
Disconnect seatback power return control unit connector.
2.
Check continuity between seatback power return control unit harness connector and power return motor
assembly (RH) harness connector.
3.
Check continuity between seatback power return control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace seatback power return control unit. Refer to
SE-139, "Removal and Installation"
NO
>> Repair or replace harness.
3.
CHECK MOTOR SENSOR (RH) GROUND CIRCUIT
1.
Check continuity between seatback power return control unit harness connector and power return motor
assembly (RH) harness connector.
2.
Check continuity between seatback power return control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
CHECK MOTOR SENSOR (RH) OUTPUT SIGNAL
1.
Connect seatback power return control unit connector.
2.
Check signal between seatback power return control unit harness connector and ground with an oscillo-
scope.
(+)
(–)
Condition
Voltage (V)
Power return motor assembly (RH)
Connector
Terminal
B494
6
Ground
When power return motor (RH) is operated
9 – 16
Seatback power return control unit
Power return motor assembly (RH)
Continuity
Connector
Terminal
Connector
Terminal
B487
3
B494
6
Existed
Seatback power return control unit
Ground
Continuity
Connector
Terminal
B487
3
Not existed
Seatback power return control unit
Power return motor assembly (RH)
Continuity
Connector
Terminal
Connector
Terminal
B487
1
B494
4
Existed
Seatback power return control unit
Ground
Continuity
Connector
B487
1
Not existed
SE-70
< DTC/CIRCUIT DIAGNOSIS >
MOTOR SENSOR
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
CHECK MOTOR SENSOR (RH) SIGNAL CIRCUIT
1.
Disconnect power return motor assembly (RH) connector and seatback power return control unit connec-
tor.
2.
Check continuity between power return motor assembly (RH) harness connector and seatback power
return control unit harness connector.
3.
Check continuity between power return motor assembly (RH) harness connector and ground.
Is the inspection result normal?
YES
>> Replace power return motor assembly (RH) [reclining device assembly (RH)]. Refer to
.
NO
>> Repair or replace harness.
6.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
>> INSPECTION END
(+)
(–)
Condition
Signal
(Reference value)
Seatback power return control unit
Connector
Terminal
B487
2
Ground
During the power return motor
(RH) operation
When pinching seatback occurs
The above pulse width should be
expanded
JMKIA0070GB
Seatback power return control unit
Power return motor assembly (RH)
Continuity
Connector
Terminal
Connector
Terminal
B487
2
B494
3
Existed
Seatback power return control unit
Ground
Continuity
Connector
Terminal
B487
2
Not existed
SEATBACK DOES NOT OPERATE POWER RETURN
SE-71
< SYMPTOM DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
SYMPTOM DIAGNOSIS
SEATBACK DOES NOT OPERATE POWER RETURN
BOTH SIDES
BOTH SIDES : Diagnosis Procedure
INFOID:0000000009652969
1.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit.
Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace the malfunctioning parts.
2.
CHECK VEHICLE SPEED SIGNAL CIRCUIT
Check vehicle speed signal circuit.
Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CONFIRM THE OPERATION
Confirm the operation again.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> GO TO 1.
LH
LH : Diagnosis Procedure
INFOID:0000000009652970
1.
CHECK THIRD SEAT FOLD SWITCH (LH)
Check third seat fold switch (LH).
Refer to
SE-49, "LH : Component Function Check"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace the malfunctioning parts.
2.
CHECK POWER RETURN MOTOR (LH)
Check power return motor (LH).
Refer to
SE-65, "LH : Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CHECK SEATBACK ANGLE LIMIT SWITCH (LH)
Check seatback angle limit switch (LH).
Refer to
SE-55, "LH : Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the malfunctioning parts.
4.
CONFIRM THE OPERATION
Confirm the operation again.
Is the result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
SE-72
< SYMPTOM DIAGNOSIS >
SEATBACK DOES NOT OPERATE POWER RETURN
NO
>> GO TO 1.
RH
RH : Diagnosis Procedure
INFOID:0000000009652971
1.
CHECK THIRD SEAT FOLD SWITCH (RH)
Check third seat fold switch (RH).
Refer to
SE-51, "RH : Component Function Check"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace the malfunctioning parts.
2.
CHECK POWER RETURN MOTOR (RH)
Check power return motor (RH).
Refer to
SE-65, "RH : Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CHECK SEATBACK ANGLE LIMIT SWITCH (RH)
Check seatback angle limit switch (RH).
Refer to
SE-56, "RH : Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the malfunctioning parts.
4.
CONFIRM THE OPERATION
Confirm the operation again.
Is the result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> GO TO 1.
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