2009 INFINITI QX56 200

POWER SEAT SWITCH GROUND CIRCUITADP-69
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
POWER SEAT SWITCH GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000003775589
1. CHECK POWER SEAT SWITCH LH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power seat switch LH.
3. Check continuity between power seat switch LH connector and ground.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-38, "Intermittent
Incident".
NO >> Repair or replace harness.
Power seat switch LH
connector Te r m i n a l
GroundContinuity
B208 7 Yes
ALJIA0316ZZ
Revision: December 20092009 QX56

ADP-70
< COMPONENT DIAGNOSIS >
DETENTION SWITCH
DETENTION SWITCH
DescriptionINFOID:0000000003775590
Park position switch is installed on A/T shift selector. It is turned OFF when the A/T selector lever is in P posi-
tion. The driver seat control unit judges that the A/T select or lever is in P position if continuity does not exist in
this circuit.
Component Function CheckINFOID:0000000003775591
1. CHECK FUNCTION
1. Select “DETENT SW” signal in “D ata monitor” mode with CONSULT-III.
2. Check park position switch signal under the following conditions.
Is the indication normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-70, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775592
1. CHECK DTC WITH “BCM”
Check “Self Diagnostic Result” for BCM with CONSULT-lll.
Is any other DTC detected?
YES >> Check the DTC.
NO >> GO TO 2
2. CHECK PARK POSITION SWITCH INPUT SIGNAL
1. Turn ignition switch ON.
2. Mechanical key must be removed from the key switch.
3. Check voltage between driver seat control unit harness connec- tor and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 3
3. CHECK PARK POSITION SWITCH CIRCUIT
Monitor item Condition Status
DETENT SW A/T selector lever P position OFF
Other than
above
ON
Driver seat
control unit connector Te r m i n a l
ConditionVoltage (V)
(Approx.)
(+) (-)
B202 21 Ground A/T selec-
tor leverP position
Battery volt-
age
Other than
above 0V
ALJIA0193ZZ
Revision: December 20092009 QX56

DETENTION SWITCHADP-71
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and A/T shift selector.
3. Check continuity between driver seat control unit harness con-
nector (A) and A/T shift selector harness connector (B).
4. Check continuity between driver seat control unit harness con-
nector (A) and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
AB Continuity
Connector Terminal Connector Terminal
B202 21 M203 6 Yes
A GroundContinuity
Connector Terminal
B202 21 No
ALJIA0194ZZ
Revision: December 20092009 QX56

ADP-72
< COMPONENT DIAGNOSIS >
FRONT DOOR SWITCH (DRIVER SIDE)
FRONT DOOR SWITCH (DRIVER SIDE)
DescriptionINFOID:0000000003775593
Detects front door LH open/close condition.
Component Function CheckINFOID:0000000003775594
1. CHECK FUNCTION
1. Select “DOOR SW-DR” in “Data monitor” mode with CONSULT-III.
2. Check the front door switch LH signal under the following conditions.
Is the inspection result normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-72, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775595
1. CHECK FRONT DOOR SWITCH LH CIRCUIT
1. Disconnect BCM and front door switch LH.
2. Check continuity between BCM connector and front door switch LH connector.
3. Check continuity between BCM connector and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
2. CHECK FRONT DOOR SWITCH LH
Refer to ADP-72, "Component Inspection"
.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace front door switch LH.
3. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-56, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Component InspectionINFOID:0000000003775596
1. CHECK FRONT DOOR SWITCH LH
Monitor item Condition Status
DOOR SW-DR Front door switch LH Open ON
Close OFF
BCM connector Terminal
Front door switch
LH connector Terminal Continuity
M19 47 B8 2 Yes
BCM connector Terminal GroundContinuity
M19 47 No
LIIA1027E
Revision: December 20092009 QX56

FRONT DOOR SWITCH (DRIVER SIDE)ADP-73
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Turn ignition switch OFF.
2. Disconnect front door switch LH.
3. Check continuity between front door switch LH terminals.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace front door switch LH.
Te r m i n a l Condition Continuity
Front door switch LH
2 Ground part of
door switch Front door switch
LH Pushed No
Released Yes
LIIA2377E
Revision: December 20092009 QX56

ADP-74
< COMPONENT DIAGNOSIS >
SLIDING SENSOR
SLIDING SENSOR
DescriptionINFOID:0000000003775597
 The sliding sensor is installed to the power seat frame assembly.
 The pulse signal is input to the driver seat control unit when sliding is performed.
 The driver seat control unit counts the pulse and calculates the sliding amount of the seat.
Component Function CheckINFOID:0000000003775598
1. CHECK FUNCTION
1. Select “SLIDE PULSE” in “Data monitor” mode with CONSULT-III.
2. Check sliding sensor signal under the following conditions.
Is the indication normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-74, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775599
1. CHECK SLIDING SENSOR SIGNAL
1. Turn ignition switch OFF.
2. Read voltage signal between driver seat control unit harness connector and ground with osiloscope.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 2
2. CHECK SLIDING SENSOR CIRCUITS
Monitor item Condition Valve
SLIDE PULSE Seat sliding Operate (forward) Change (increase)
Operate (backward) Change (decrease)
Release No change
Te r m i n a l s
Condition Voltage signal
(+)
(–)
Driver’s
seat
control unit Te r m i -
nal
B202 24 Ground Seat
slidingOperate
Other
than
above
0 or 5
PIIA4556E
PIIA3277E
Revision: December 20092009 QX56

SLIDING SENSORADP-75
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Disconnect driver seat control unit and sliding motor LH.
2. Check continuity between driver seat control unit harness con-
nector and sliding 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 sliding motor LH.
2. Check seat operation (except slidi ng operation) with memory function.
Is the inspection result normal?
YES >> Replace sliding motor LH. (Built in power seat frame assembly). Refer to SE-68, "Disassembly
and Assembly".
NO >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation"
.
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Driver seat control
unit connector Te r m i n a l
Sliding motor
LH connector Terminal Continuity
B202 (A) 16
B204 (B) 3
Ye s
24 4
31 2
Driver seat control unit connector Te r m i n a l
GroundContinuity
B202 (A) 16
No
24
31
ALJIA0317ZZ
Revision: December 20092009 QX56

ADP-76
< COMPONENT DIAGNOSIS >
RECLINING SENSOR
RECLINING SENSOR
DescriptionINFOID:0000000003775600
 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 CheckINFOID:0000000003775601
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 ADP-76, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775602
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
Te r m i n a l s
Condition Voltage signal
(+)
(–)
Driver
seat con-
trol unit Te r m i -
nal
B202 9 Ground Seat
reclin-
ingOperate
Other
than
above
0 or 5
PIIA4559E
SIIA0692J
Revision: December 20092009 QX56