Infiniti Q45. Manual — part 827
AUTOMATIC DRIVE POSITIONER
SE-63
C
D
E
F
G
H
J
K
L
M
A
B
SE
Check Sliding Sensor Circuit
NIS0012W
1.
CHECK SLIDING SENSOR MECHANISM
Check the operation malfunction caused by sliding rail deformation or parts are loose.
OK or NG
OK
>> GO TO 2.
NG
>> Repair the malfunctioning part and check again.
2.
CHECK SLIDING SENSOR INPUT/OUTPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Check signal between driver seat control unit connector and
ground, with oscilloscope.
OK or NG
OK
>> System is OK.
NG
>> GO TO 3.
3.
CHECK HARNESS CONTINUITY
1.
Disconnect driver seat control unit connector and sliding motor connector.
2.
Check continuity between driver seat control unit connector
B143 terminals 20, 32 and sliding motor B146 terminals 20, 32A.
3.
Check continuity between driver seat control unit B143 terminals
20, 32 and ground.
OK or NG
OK
>> Replace sliding motor.
NG
>> Repair or replace harness between driver seat control unit and sliding motor.
Connector
Terminals
(Wire color)
Condition
Signal
(Reference valve)
(+)
(–)
B143
20 (G/B)
Ground
Sliding
motor
operation
PIIA4130E
PIIA3277E
20 (G/B) – 20 (G/B)
: Continuity should exist.
32 (R/W) – 32A (R/W)
: Continuity should exist.
20 (G/B) – Ground
:Continuity should not exist.
32 (R/W) – Ground
:Continuity should not exist.
PIIA4129E
SE-64
AUTOMATIC DRIVE POSITIONER
Check Reclining Sensor Circuit
NIS0012X
1.
CHECK RECLINING SENSOR MECHANISM
Check the operation malfunction caused by reclining mechanism deformation or parts are loose.
OK or NG
OK
>> GO TO 2.
NG
>> Repair the malfunctioning part and check again.
2.
CHECK RECLINING SENSOR INPUT/OUTPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Check signal between driver seat control unit connector and
ground, with oscilloscope.
OK or NG
OK
>> System is OK.
NG
>> GO TO 3.
3.
CHECK HARNESS CONTINUITY
1.
Disconnect driver seat control unit connector and reclining motor connector.
2.
Check continuity between driver seat control unit connector
B143 terminals 30, 32 and reclining motor connector B147 ter-
minals 30, 32.
3.
Check continuity between driver seat control unit connector
B143 terminals 30, 32 and ground.
OK or NG
OK
>> Replace reclining motor.
NG
>> Repair or replace harness between driver seat control unit and reclining motor.
Connector
Terminals
(Wire color)
Condition
Signal
(Reference value)
(+)
(–)
B143
30 (L)
Ground
Reclining
motor
operation
PIIA4141E
PIIA3278E
30 (L) – 30 (L)
: Continuity should exist.
32 (R/W) – 32 (R/W)
: Continuity should exist.
30 (L) – Ground
:Continuity should not exist.
32 (R/W) – Ground
:Continuity should not exist.
PIIA4144E
AUTOMATIC DRIVE POSITIONER
SE-65
C
D
E
F
G
H
J
K
L
M
A
B
SE
Check Front Lifting Sensor Circuit
NIS0012Y
1.
CHECK FRONT LIFTING SENSOR MECHANISM
Check the operation malfunction caused by lifter mechanism deformation or parts are loose.
OK or NG
OK
>> GO TO 2.
NG
>> Repair the malfunctioning part and check again.
2.
CHECK FRONT LIFTING SENSOR INPUT/OUTPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Check signal between driver seat control unit connector and
ground, with oscilloscope.
OK or NG
OK
>> System is OK.
NG
>> GO TO 3.
3.
CHECK HARNESS CONTINUITY
1.
Disconnect driver seat control unit connector and front lifting
motor connector.
2.
Check continuity between driver seat control unit connector
B143 terminals 21, 32 and front lifting motor connector B148 ter-
minals 21, 32B.
3.
Check continuity between driver seat control unit connector
B143 terminals 21, 32 and ground.
OK or NG
OK
>> Replace front lifting motor.
NG
>> Repair or replace harness between driver seat control unit and front lifting motor.
Connector
Terminals
(Wire color)
Condition
Signal
(Reference value)
(+)
(–)
B143
21 (Y/B)
Ground
Front
lifting motor
operation
PIIA4143E
PIIA3278E
21 (Y/B) – 21 (Y/B)
: Continuity should exist.
32 (R/W) – 32B (R/W)
: Continuity should exist.
21 (Y/B) – Ground
:Continuity should not exist.
32 (R/W) – Ground
:Continuity should not exist.
PIIA4145E
SE-66
AUTOMATIC DRIVE POSITIONER
Check Rear Lifting Sensor Circuit
NIS0012Z
1.
CHECK REAR LIFTING SENSOR MECHANISM
Check the operation malfunction caused by lifter mechanism deformation or parts are loose.
OK or NG
OK
>> GO TO 2.
NG
>> Repair the malfunctioning part and check again.
2.
CHECK REAR LIFTING SENSOR INPUT/OUTPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Check signal between driver seat control unit connector ground
with oscilloscope.
OK or NG
OK
>> System is OK.
NG
>> GO TO 3.
3.
CHECK HARNESS CONTINUITY
1.
Disconnect driver seat control unit connector and rear lifting motor connector.
2.
Check continuity between driver seat control unit connector
B143 terminals 31, 32 and rear lifting motor connector B149 ter-
minals 31, 32C.
3.
Check continuity between driver seat control unit connector
B143 terminals 31, 32 and ground.
OK or NG
OK
>> Replace rear lifting motor.
NG
>> Repair or replace harness between driver seat control unit and rear lifting motor.
Connector
Terminals
(Wire color)
Condition
Signal
(Reference value)
(+)
(–)
B143
31 (W/R)
Ground
Rear
lifting motor
operation
PIIA4146E
SIIA0693J
31 (W/R) – 31 (W/R)
: Continuity should exist.
32 (R/W) – 32C (R/W)
: Continuity should exist.
31 (W/R) – Ground
:Continuity should not exist.
32 (R/W) – Ground
:Continuity should not exist.
PIIA4142E
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