Infiniti QX56 (JA60). Manual — part 23
RECLINING SENSOR
ADP-83
< COMPONENT DIAGNOSIS >
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RECLINING SENSOR
Description
INFOID:0000000005147529
• The reclining motor is installed to the seatback assembly.
• The pulse signal is inputted to the driver seat control unit when the reclining is operated.
• The driver seat control unit counts the pulse and calculates the reclining amount of the seat.
Component Function Check
INFOID:0000000005147530
1.
CHECK FUNCTION
1. Select “RECLN PULSE” in “Data monitor” mode with CONSULT-III.
2. Check reclining sensor signal under the following conditions.
Is the indication normal?
YES
>> Inspection End.
NO
>> Perform diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000005147531
Regarding Wiring Diagram information, refer to
1.
CHECK RECLINING SENSOR SIGNAL
1. Turn ignition switch OFF.
2. Read voltage signal between driver seat control unit harness
connector and ground with oscilloscope.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> GO TO 2
2.
CHECK RECLINING SENSOR CIRCUIT
Monitor item
Condition
Value
RECLN PULSE
Seat reclining
Operate (forward)
Change (increase)
Operate (backward)
Change (decrease)
Release
No change
Terminals
Condition
Voltage signal
(+)
(–)
Driver
seat con-
trol unit
Termi-
nal
B202
9
Ground
Seat
reclin-
ing
Operate
Other
than
above
0 or 5
PIIA4559E
SIIA0692J
ADP-84
< COMPONENT DIAGNOSIS >
RECLINING SENSOR
1. Disconnect driver seat control unit and reclining motor LH.
2. Check continuity between driver seat control unit harness con-
nector and reclining motor LH harness connector.
3. Check continuity between driver seat control unit harness con-
nector and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK SEAT OPERATION
1. Connect driver seat control unit and reclining motor LH.
2. Check seat operation (except reclining operation) with memory function.
Is the operation normal?
YES
>> Replace reclining motor LH. (Built in seatback assembly). Refer to
NO
>> Replace driver seat control unit. Refer to
ADP-174, "Removal and Installation"
4.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace driver seat control unit. Refer to
ADP-174, "Removal and Installation"
NO
>> Repair or replace the malfunctioning part.
Driver seat control
unit connector
Terminal
Reclining motor
connector
Terminal
Continuity
B202 (A)
9
B205 (B)
1
Yes
31
4
Driver seat control unit
connector
Terminal
Ground
Continuity
B202 (A)
9
No
31
ALJIA0318ZZ
LIFTING SENSOR (FRONT)
ADP-85
< COMPONENT DIAGNOSIS >
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LIFTING SENSOR (FRONT)
Description
INFOID:0000000005147532
• The lifting sensor (front) is installed to the power seat frame assembly.
• 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:0000000005147533
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.
Is the indication normal?
YES
>> Inspection End.
NO
>> Perform diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000005147534
Regarding Wiring Diagram information, refer to
1.
CHECK LIFTING SENSOR (FRONT) SIGNAL
1. Turn ignition switch OFF.
2. Read the voltage signal between driver seat control unit harness
connector and ground with an oscilloscope.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> GO TO 2
2.
CHECK LIFTING SENSOR (FRONT) CIRCUIT
Monitor item
Condition
Value
LIFT FR PULSE
Seat lifting (front)
Operate (up)
Change (increase)
Operate (down)
Change (decrease)
Release
No change
Terminals
Condition
Voltage signal
(+)
(–)
Driver
seat con-
trol unit
connector
Termi-
nal
B202
25
Ground
Seat
lifting
(front)
Oper-
ate
Other
than
above
0 or 5
PIIA4561E
SIIA0691J
ADP-86
< COMPONENT DIAGNOSIS >
LIFTING SENSOR (FRONT)
1. Disconnect driver seat control unit and lifting motor (front).
2. Check continuity between driver seat control unit harness con-
nector and lifting motor (front) harness connector.
3. Check continuity between driver seat control unit harness con-
nector and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK SEAT OPERATION
1. Connect driver seat control unit and lifting motor (front).
2. Check seat operation [except lifting (front) operation] with memory function.
Is the operation normal?
YES
>> Replace lifting motor (front). (Built in power seat frame assembly). Refer to
.
NO
>> Replace driver seat control unit. Refer to
ADP-174, "Removal and Installation"
4.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace driver seat control unit. Refer to
ADP-174, "Removal and Installation"
NO
>> Repair or replace the malfunctioning part.
Driver seat control
unit connector
Terminal
Lifting motor
(front) connector
Terminal
Continuity
B202 (A)
16
B206 (B)
3
Yes
25
4
31
2
Driver seat control unit
connector
Terminal
Ground
Continuity
B202 (A)
16
No
25
31
ALJIA0319ZZ
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