Infiniti G37 Coupe. Manual — part 27
ADP-102
< COMPONENT DIAGNOSIS >
LIFTING SENSOR (FRONT)
4.
Check continuity between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
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
>> GO TO 7.
NO
>> Repair or replace harness.
5.
CHECK LIFTING SENSOR (FRONT) GROUND
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.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness.
6.
CHECK SEAT OPERATION
1.
Connect driver seat control unit connector and lifting motor (front) connector.
Driver seat control unit
connector
Terminal
Ground
Continuity
B503
25
Not existed
Terminals
Voltage (V)
(Approx.)
(+)
(–)
Lifting motor (front) connector
Terminal
B527
16
Ground
5
Driver seat control unit connec-
tor
Terminal
Lifting motor (front)
connector
Terminal
Continuity
B503
16
B527
16
Existed
Driver seat control unit connec-
tor
Terminal
Ground
Continuity
B503
16
Not existed
Driver seat control unit
connector
Terminal
Lifting motor (front)
connector
Terminal
Continuity
B503
31
B527
31
Existed
LIFTING SENSOR (FRONT)
ADP-103
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
ADP
N
O
P
2.
Check seat operation [except lifting (front) operation] with memory function.
Is the operation normal?
YES
>> Replace lifting motor (front). (Built in seat slide cushion frame.)
NO
>> Replace driver seat control unit.
7.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace driver seat control unit. Refer to
ADP-236, "Removal and Installation"
NO
>> Repair or replace the malfunctioning part.
ADP-104
< COMPONENT DIAGNOSIS >
LIFTING SENSOR (REAR)
LIFTING SENSOR (REAR)
Description
INFOID:0000000001693743
• The lifting sensor (rear) is installed on the seat slide cushion frame.
• The pulse signal is transmitted to the driver seat control unit when lifting (rear) is operated.
• The driver seat control unit counts the pulse and calculates the lifting (rear) amount of the seat.
Component Function Check
INFOID:0000000001693744
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
ADP-104, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000001693745
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
>> GO TO 7.
NO
>> GO TO 2.
2.
CHECK LIFTING SENSOR (REAR) CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect driver seat control unit connector and lifting motor (rear) connector.
3.
Check the continuity between driver seat control unit harness connector and lifting motor (rear) harness
connector.
Monitor item
Condition
Value
LIFT RR PULSE
Seat lifting (rear)
Operate (Up)
Change (increase)
*1
Operate (Down)
Change (decrease)
*1
Release
No change
*1
Terminals
Condition
Voltage signal
(+)
(–)
Driver seat control unit
Terminal
B503
10
Ground
Seat Lifting
(rear)
Operate
Other than above
0 or 5
JMJIA0119ZZ
Driver seat control unit
connector
Terminal
Lifting motor (rear)
connector
Terminal
Continuity
B503
10
B529
10
Existed
LIFTING SENSOR (REAR)
ADP-105
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
ADP
N
O
P
4.
Check the continuity between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK LIFTING SENSOR (REAR) POWER SUPPLY
1.
Connect driver seat control unit connector.
2.
Turn ignition switch ON.
3.
Check 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 continuity between driver seat control unit harness connector and lifting motor (rear) harness con-
nector.
4.
Check continuity between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace harness.
5.
CHECK LIFTING SENSOR (REAR) GROUND
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 (rear) harness con-
nector.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness.
6.
CHECK SEAT OPERATION
1.
Connect driver seat control unit connector and lifting motor (rear) connector.
Driver seat control unit
connector
Terminal
Ground
Continuity
B503
10
Not Existed
Terminals
Voltage (V)
(Approx.)
(+)
(–)
Lifting motor (rear)
Terminal
B529
16
Ground
5
Driver seat control unit
connector
Terminal
Lifting motor (rear)
connector
Terminal
Continuity
B503
16
B529
16
Existed
Driver seat control unit
connector
Terminal
Ground
Continuity
B503
16
Not existed
Driver seat control unit
connector
Terminal
Lifting motor (rear)
connector
Terminal
Continuity
B503
31
B529
31
Existed
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