Infiniti QX56 (Z62). Manual — part 25
LIFTING SENSOR (FRONT)
ADP-93
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
ADP
N
O
P
LIFTING SENSOR (FRONT)
Component Function Check
INFOID:0000000006248390
1.
CHECK FUNCTION
1.
Select “LIFT FR PULSE” in “Data monitor” mode with CONSULT-III.
2.
Check the lifting sensor (front) signal under the following conditions.
*1
: The value at the seat position attained when the battery is connected is considered to be 32768.
Is the indication normal?
YES
>> INSPECTION END
NO
>> Perform diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000006248391
1.
CHECK LIFTING SENSOR (FRONT) SIGNAL
1.
Turn ignition switch ON.
2.
Read the voltage signal driver seat control unit harness connector and ground with an oscilloscope.
Is the inspection result normal?
YES
>> Replace driver seat control unit.
NO
>> GO TO 2.
2.
CHECK LIFTING SENSOR (FRONT) CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect driver seat control unit and lifting motor (front) connector.
3.
Check continuity between driver seat control unit harness connector and lifting motor (front) harness con-
nector.
4.
Check continuity between driver seat control unit harness connector and ground.
Monitor item
Condition
Value
LIFT FR PULSE
Seat lifting (front)
Operate (up)
Change (increase)
*1
Operate (down)
Change (decrease)
*1
Release
No change
*1
(+)
(-)
Condition
Voltage (V)
(Approx.)
Driver seat control unit
Connector
Terminals
B452
19
Ground
Seat Lifting
(front)
Operate
Other than the
above
0 or 5
JMJIA0119ZZ
Driver seat control unit
Lifting motor (front)
Continuity
Connector
Terminal
Connector
Terminal
B452
19
B455
19
Existed
ADP-94
< DTC/CIRCUIT DIAGNOSIS >
LIFTING SENSOR (FRONT)
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness or connector.
3.
CHECK LIFTING SENSOR (FRONT) POWER SUPPLY
1.
Connect driver seat control unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between lifting motor (front) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK LIFTING SENSOR (FRONT) POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect driver seat control unit connector.
3.
Check continuity between driver seat control unit harness connector and lifting motor (front) harness con-
nector.
4.
Check continuity between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace driver seat control unit.
NO
>> Repair or replace harness or connector.
5.
CHECK LIFTING SENSOR (FRONT) GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between lifting motor (front) harness connector and ground.
Is the inspection result normal?
YES
>> Replace lifting motor (front).
NO
>> Repair or replace harness or connector.
Driver seat control unit
Ground
Continuity
Connector
Terminal
B452
19
Not existed
(+)
(-)
Voltage (V)
(Approx.)
Lifting motor (front)
Connector
Terminals
B455
12
Ground
12
Driver seat control unit
Lifting motor (front)
Continuity
Connector
Terminal
Connector
Terminal
B452
12
B455
12
Existed
Driver seat control unit
Ground
Continuity
Connector
Terminal
B452
12
Not existed
Lifting motor (front)
Ground
Continuity
Connector
Terminal
B455
43
Existed
LIFTING SENSOR (REAR)
ADP-95
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
ADP
N
O
P
LIFTING SENSOR (REAR)
Component Function Check
INFOID:0000000006248392
1.
CHECK FUNCTION
1.
Select “LIFT RR PULSE” in “Data monitor” mode with CONSULT-III.
2.
Check lifting sensor (rear) signal under the following conditions.
*1
: The value at the seat position attained when the battery is connected is considered to be 32768.
Is the indication normal?
YES
>> INSPECTION END
NO
>> Perform diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000006248393
1.
CHECK LIFTING SENSOR (REAR) SIGNAL
1.
Turn ignition switch ON.
2.
Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.
Is the inspection result normal?
YES
>> Replace driver seat control unit.
NO
>> GO TO 2.
2.
CHECK LIFTING SENSOR (REAR) CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect driver seat control unit and lifting motor (rear) connector.
3.
Check the continuity between driver seat control unit harness connector and lifting motor (rear) harness
connector.
4.
Check the continuity between driver seat control unit harness connector and ground.
Monitor item
Condition
Value
LIFT RR PULSE
Seat lifting (rear)
Operate (up)
Change (increase)
*1
Operate (down)
Change (decrease)
*1
Release
No change
*1
(+)
(-)
Condition
Voltage (V)
(Approx.)
Driver seat control unit
Connector
Terminals
B452
20
Ground
Seat Lifting
(rear)
Operate
Other than the
above
0 or 5
JMJIA0119ZZ
Driver seat control unit
Lifting motor (rear)
Continuity
Connector
Terminal
Connector
Terminal
B452
20
B456
20
Existed
ADP-96
< DTC/CIRCUIT DIAGNOSIS >
LIFTING SENSOR (REAR)
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness or connector.
3.
CHECK LIFTING SENSOR (REAR) POWER SUPPLY
1.
Connect driver seat control unit connector.
2.
Turn ignition switch ON.
3.
Check the voltage between lifting motor (rear) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK LIFTING SENSOR (REAR) POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect driver seat control unit connector.
3.
Check the continuity between driver seat control unit harness connector and lifting motor (rear) harness
connector.
4.
Check the continuity between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace driver seat control unit.
NO
>> Repair or replace harness or connector.
5.
CHECK LIFTING SENSOR (REAR) GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check the continuity between lifting motor (rear) harness connector and ground.
Is the inspection result normal?
YES
>> Replace lifting motor (rear).
NO
>> Repair or replace harness or connector.
Driver seat control unit
Ground
Continuity
Connector
Terminal
B452
20
Not existed
(+)
(-)
Voltage (V)
(Approx.)
Lifting motor (rear)
Connector
Terminals
B456
12
Ground
12
Driver seat control unit
Lifting motor (rear)
Continuity
Connector
Terminal
Connector
Terminal
B452
12
B456
12
Existed
Driver seat control unit
Ground
Continuity
Connector
Terminal
B452
12
Not existed
Lifting motor (rear)
Ground
Continuity
Connector
Terminal
B456
43
Existed
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