Nissan Quest E52. Instruction — part 1059
POWER RETURN MOTOR
SE-65
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
POWER RETURN MOTOR
LH
LH : Diagnosis Procedure
INFOID:0000000009652965
1.
CHECK POWER RETURN MOTOR (LH) INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Check voltage between power return motor assembly (LH) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK POWER RETURN MOTOR (LH) CIRCUIT
1.
Disconnect seatback power return control unit connector and power return motor assembly (LH) connec-
tor.
2.
Check continuity between seatback power return control unit harness connector and power return motor
assembly (LH) 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 INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace power return motor assembly (LH) [reclining device assembly (LH)]. Refer to
NO
>> Repair or replace harness.
RH
RH : Diagnosis Procedure
INFOID:0000000009652966
1.
CHECK POWER RETURN MOTOR (RH) INPUT SIGNAL
1.
Turn ignition switch OFF.
(+)
(–)
Condition
Voltage (V)
Power return motor assembly (LH)
Connector
Terminal
B498
1
Ground
Power return motor assembly (LH)
Reverse operation
9 – 16
Other than the above
0 – 0.5
5
Return operation
9 – 16
Other than the above
0 – 0.5
Seatback power return control unit
Power return motor assembly (LH)
Continuity
Connector
Terminal
Connector
Terminal
B487
5
B498
1
Existed
6
5
Seatback power return control unit
Ground
Continuity
Connector
Terminal
B487
5
Not existed
6
SE-66
< DTC/CIRCUIT DIAGNOSIS >
POWER RETURN MOTOR
2.
Check voltage between power return motor assembly (RH) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK POWER RETURN MOTOR (RH) CIRCUIT
1.
Disconnect seatback power return control unit connector and power return motor assembly (RH) connec-
tor.
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 INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace power return motor assembly (RH) [reclining device assembly (RH)]. Refer to
.
NO
>> Repair or replace harness.
(+)
(–)
Condition
Voltage (V)
Power return motor assembly (RH)
Connector
Terminal
B494
1
Ground
Power return motor assembly (RH)
Reverse operation
9 – 16
Other than the above
0 – 0.5
5
Return operation
9 – 16
Other than the above
0 – 0.5
Seatback power return control unit
Power return motor assembly (RH)
Continuity
Connector
Terminal
Connector
Terminal
B487
7
B494
1
Existed
8
5
Seatback power return control unit
Ground
Continuity
Connector
Terminal
B487
7
Not existed
8
MOTOR SENSOR
SE-67
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
MOTOR SENSOR
LH
LH : Diagnosis Procedure
INFOID:0000000009652967
1.
CHECK MOTOR SENSOR (LH) POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect power return motor assembly (LH) connector.
3.
Check voltage between power return motor assembly (LH) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK MOTOR SENSOR (LH) 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 (LH) 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 (LH) GROUND CIRCUIT
1.
Check continuity between seatback power return control unit harness connector and power return motor
assembly (LH) 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 (LH) OUTPUT SIGNAL
(+)
(–)
Condition
Voltage (V)
Power return motor assembly (LH)
Connector
Terminal
B498
6
Ground
When power return motor (LH) is operated
9 – 16
Seatback power return control unit
Power return motor assembly (LH)
Continuity
Connector
Terminal
Connector
Terminal
B487
11
B498
6
Existed
Seatback power return control unit
Ground
Continuity
Connector
Terminal
B487
11
Not existed
Seatback power return control unit
Power return motor assembly (LH)
Continuity
Connector
Terminal
Connector
Terminal
B487
9
B498
4
Existed
Seatback power return control unit
Ground
Continuity
Connector
B487
9
Not existed
SE-68
< DTC/CIRCUIT DIAGNOSIS >
MOTOR SENSOR
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.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
CHECK MOTOR SENSOR (LH) SIGNAL CIRCUIT
1.
Disconnect power return motor assembly (LH) connector and seatback power return control unit connec-
tor.
2.
Check continuity between power return motor assembly (LH) harness connector and seatback power
return control unit harness connector.
3.
Check continuity between power return motor assembly (LH) harness connector and ground.
Is the inspection result normal?
YES
>> Replace power return motor assembly (LH) [reclining device assembly (LH)]. Refer to
.
NO
>> Repair or replace harness.
6.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
>> INSPECTION END
RH
RH : Diagnosis Procedure
INFOID:0000000009652968
1.
CHECK MOTOR SENSOR (RH) POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect power return motor assembly (RH) connector.
3.
Check voltage between power return motor assembly (RH) harness connector and ground.
(+)
(–)
Condition
Signal
(Reference value)
Seatback power return control unit
Connector
Terminal
B487
10
Ground
During the power return motor
(LH) operation
When pinching of seatback oc-
curs
The above pulse width should be
expanded
JMKIA0070GB
Seatback power return control unit
Power return motor assembly (LH)
Continuity
Connector
Terminal
Connector
Terminal
B487
10
B498
3
Existed
Seatback power return control unit
Ground
Continuity
Connector
Terminal
B487
10
Not existed
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