Nissan Maxima. Manual — part 22
ADP-80
< DTC/CIRCUIT DIAGNOSIS >
LIFTING SENSOR (FRONT)
LIFTING SENSOR (FRONT)
Description
INFOID:0000000010051779
• The lifting sensor (front) is installed to the seat frame.
• The pulse signal is input to the driver seat control unit when the lifting (front) is operated.
• The driver seat control unit counts the pulse and calculates the lifting (front) amount of the seat.
Component Function Check
INFOID:0000000010051780
1.
CHECK FUNCTION
1. Select “LIFT FR PULSE” in “DATA MONITOR” mode with CONSULT.
2. Check the lifting sensor (front) signal under the following conditions.
Is the indication normal?
YES
>> Inspection End.
NO
>> Perform diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000010051781
Regarding Wiring Diagram information, refer to
1.
CHECK LIFTING SENSOR (FRONT) SIGNAL
1. Turn ignition switch ON.
2. Read the voltage signal between driver seat control unit harness connector and ground with an oscillo-
scope.
Is the inspection result normal?
YES
>> Replace driver seat control unit. Refer to
ADP-169, "Removal and Installation"
NO
>> GO TO 2
2.
CHECK LIFTING SENSOR (FRONT) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and front power seat LH [lifting motor (front)].
Monitor item
Condition
Value
LIFT FR PULSE
Seat lifting (front)
Operate (up)
Change (decrease)
Operate (down)
Change (increase)
Release
No change
Terminals
Condition
Voltage signal
(+)
(–)
Driver seat con-
trol unit connec-
tor
Terminal
B203
30
Ground
Seat lifting
(front)
Operate
Other than
above
0 or 5
JMJIA0119ZZ
LIFTING SENSOR (FRONT)
ADP-81
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
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L
M
A
B
ADP
N
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3. Check continuity between driver seat control unit harness connector and front power seat LH [lifting motor
(front)] harness connector.
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.
2. Turn ignition switch ON.
3. Check voltage between front power seat LH [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.
3. Check continuity between driver seat control unit harness connector and front power seat LH [lifting motor
(front)] harness connector.
4. Check continuity between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace driver seat control unit. Refer to
ADP-169, "Removal and Installation"
NO
>> Repair or replace harness.
5.
CHECK LIFTING SENSOR (FRONT) GROUND
Driver seat control unit
Front power seat LH [lifting motor (front)]
Continuity
Connector
Terminal
Connector
Terminal
B203
30
B206
10
Yes
Driver seat control unit
Ground
Continuity
Connector
Terminal
B203
30
No
(+)
(–)
Voltage (V)
(Approx.)
Front power seat LH [lifting motor (front)}
Connector
Terminals
B206
9
Ground
Battery voltage
Driver seat control unit
Front power seat LH [lifting motor (front)]
Continuity
Connector
Terminal
Connector
Terminal
B203
5
B206
9
Yes
Driver seat control unit
Ground
Continuity
Connector
Terminal
B203
5
No
ADP-82
< DTC/CIRCUIT DIAGNOSIS >
LIFTING SENSOR (FRONT)
1. Turn ignition switch OFF.
2. Check continuity between front power seat LH [lifting motor
(front)] harness connector and ground.
Is the inspection result normal?
YES
>> Replace front power seat LH [lifting motor (front)]. Refer
to
SE-68, "Removal and Installation"
NO
>> Repair or replace harness.
Front power seat LH [lifting motor
(front)]
Ground
Continuity
Connector
Terminal
B206
15
Yes
ALJIA0417ZZ
LIFTING SENSOR (REAR)
ADP-83
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
ADP
N
O
P
LIFTING SENSOR (REAR)
Description
INFOID:0000000010051782
• The lifting sensor (rear) is installed to the seat frame.
• The pulse signal is input to the driver seat control unit when the 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:0000000010051783
1.
CHECK FUNCTION
1. Select “LIFT RR PULSE” in “DATA MONITOR" mode with CONSULT.
2. Check lifting sensor (rear) signal under the following conditions.
Is the indication normal?
YES
>> Inspection End.
NO
>> Perform diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000010051784
Regarding Wiring Diagram information, refer to
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. Refer to
ADP-169, "Removal and Installation"
NO
>> GO TO 2
2.
CHECK LIFTING SENSOR (REAR) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and front power seat LH [lifting motor (rear)].
3. Check the continuity between driver seat control unit harness connector and front power seat LH [lifting
motor (rear)] harness connector.
Monitor item
Condition
Value
LIFT RR PULSE
Seat lifting (rear)
Operate (up)
Change (decrease)
Operate (down)
Change (increase)
Release
No change
Terminals
Condition
Voltage signal
(+)
(–)
Driver seat con-
trol unit connector
Terminal
B203
29
Ground
Seat lifting
(rear)
Operate
Other than
above
0 or 5
JMJIA0119ZZ
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