2009 INFINITI QX56 200

RECLINING MOTORADP-93
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Disconnect driver seat control unit and reclining motor LH.
2. Check continuity between driver seat control unit harness con-
nector and reclining motor 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 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
Reclining motor LH
connector Terminal Continuity
B203 (A) 36
B205 (B) 4
Ye s
44 3
Driver seat control unit connector Te r m i n a l
Ground Continuity
B203 (A) 36
No
44
ALJIA0322ZZ
Revision: December 20092009 QX56

ADP-94
< COMPONENT DIAGNOSIS >
LIFTING MOTOR (FRONT)
LIFTING MOTOR (FRONT)
DescriptionINFOID:0000000003775627
 The lifting motor (front) is installed to the power seat frame assembly.
 The lifting motor (front) is activated with the driver seat control unit.
 The lifter (front) is moved upward/downward by changing the rotation direction of lifting motor (front).
Component Function CheckINFOID:0000000003775628
1. CHECK FUNCTION
1. Select “SEAT LIFTER FR” in “Active test” mode with CONSULT-III.
2. Check the lifting motor (front) operation.
Is the operation of relevant parts normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-94, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775629
1. CHECK LIFTING MOTOR (FRONT) POWER SUPPLY
1. Turn the ignition switch OFF.
2. Perform “Active test” (“SEAT LIFTER FR”) with CONSULT-lll.
3. Check voltage between driver seat control unit harness connec- tor and ground.
Is the inspection result normal?
YES >> Replace lifting motor (front). (Built in power seat frame assembly). Refer to SE-68, "Disassembly
and Assembly".
NO >> GO TO 2
2. CHECK LIFTING MO TOR (FRONT) CIRCUIT
Test Item Description
SEAT LIFTER FR OFF
Seat lifting (front) Sto p
UP Upward
DWN Downward
Te r m i n a l
Test ItemVoltage (V)
(Approx.)
(+)
(-)
Driver seat
control unit connector Te r m i n a l
B203 37
Ground SEAT
LIFTER
FR OFF 0
UP 0
DWN (down) Battery voltage
45 OFF 0
UP Battery voltage
DWN (down) 0
PIIA4805E
Revision: December 20092009 QX56

LIFTING MOTOR (FRONT)ADP-95
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
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 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
Lifting motor (front)
connector Terminal Continuity
B203 (A) 37
B206 (B) 1
Ye s
45 5
Driver seat control unit connector Te r m i n a l
GroundContinuity
B203 (A) 37
No
45
ALJIA0323ZZ
Revision: December 20092009 QX56

ADP-96
< COMPONENT DIAGNOSIS >
LIFTING MOTOR (REAR)
LIFTING MOTOR (REAR)
DescriptionINFOID:0000000003775630
 The lifting motor (rear) is installed to the power seat frame assembly.
 The lifting motor (rear) is activated with the driver seat control unit.
 The seat lifter (rear) is moved upward/downward by changing the rotation direction of lifting motor (rear).
Component Function CheckINFOID:0000000003775631
1. CHECK FUNCTION
1. Select “SEAT LIFTER RR” in “A ctive test” mode with CONSULT-III.
2. Check the lifting motor (rear) operation.
Is the operation of relevant parts normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-96, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775632
1. CHECK LIFTING MOTOR (REAR) POWER SUPPLY
1. Turn the ignition switch OFF.
2. Perform “Active test” (“SEAT LIFTER RR”) with CONSULT-lll
3. Check voltage between driver seat control unit harness connec- tor and ground.
Is the inspection result normal?
YES >> Replace lifting motor (rear). (Built in power seat frame assembly). Refer to SE-68, "Disassembly
and Assembly".
NO >> GO TO 2
2. CHECK LIFTING MO TOR (REAR) CIRCUIT
Test Item Description
SEAT LIFTER RR OFF
Seat lifting (rear) Sto p
UP Upward
DWN Downward
Te r m i n a l
Test ItemVoltage (V)
(Approx.)
(+)
(-)
Driver seat
control unit connector Te r m i n a l
B203 38
Ground SEAT
LIFTER
RROFF 0
UP Battery voltage
DWN (down) 0
39 OFF 0
UP 0
DWN (down) Battery voltage
PIIA4804E
Revision: December 20092009 QX56

LIFTING MOTOR (REAR)ADP-97
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Disconnect driver seat control unit and lifting motor (rear).
2. Check continuity between driver seat control unit harness con-
nector and lifting motor (rear) 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 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
Lifting motor (rear)
connector Terminal Continuity
B203 (A) 38
B207 (B) 5
Ye s
39 1
Driver seat control unit connector Te r m i n a l
GroundContinuity
B203 (A) 38
No
39
ALJIA0324ZZ
Revision: December 20092009 QX56

ADP-98
< COMPONENT DIAGNOSIS >
TILT MOTOR
TILT MOTOR
DescriptionINFOID:0000000003775633
 The tilt motor is installed to the steering column assembly.
 The tilt motor is activated with the automatic drive positioner control unit.
 The steering column is tilted upward/downward by changing the rotation direction of tilt motor.
Component Function CheckINFOID:0000000003775634
1. CHECK FUNCTION
1. Select “TILT MOTOR” in “Act ive test” mode with CONSULT-III.
2. Check the tilt motor operation.
Is the operation of relevant parts normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-98, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775635
1. CHECK TILT MOTOR HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit and tilt motor assembly.
3. Check continuity between automat ic drive positioner control unit
connector M34 (A) terminals 35, 42 and tilt motor assembly con-
nector M86 (B) terminals 1, 5.
4. Check continuity between automat ic drive positioner control unit
connector M34 (A) terminals 35, 42 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
2. CHECK AUTOMATIC DRIVE POSITIONER CONTROL UNIT OUTPUT SIGNAL
1. Connect the automatic drive posit ioner control unit and tilt motor
assembly.
2. Check voltage between automatic drive positioner control unit connector and ground.
Test item Description
TILT MOTOR OFF
Steering tilt Sto p
UP Upward
DWN Downward
35 - 1 : Continuity should exist.
42 - 5 : Continuity should exist.
35 - Ground : Continuity should not exist.
42 - Ground : Continuity should not exist.
ALJIA0293ZZ
LIIA0482E
Revision: December 20092009 QX56

TILT MOTORADP-99
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
Is the inspection result normal?
YES >> Replace tilt motor assembly. Refer to ST-19, "Removal and Installation".
NO >> GO TO 3
3. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace automatic drive posit ioner control unit. Refer to ADP-166, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M34 35
Ground ADP steering switch ON
(UP operation)
Battery voltage
Other than above 0
42 ADP steering switch ON
(DOWN operation)
Battery voltage
Other than above 0
Revision: December 20092009 QX56

ADP-100
< COMPONENT DIAGNOSIS >
PEDAL ADJUSTING MOTOR
PEDAL ADJUSTING MOTOR
DescriptionINFOID:0000000003775636
 The pedal adjusting motor is installed to the pedal assembly.
 The pedal adjusting motor is activated with the automatic drive positioner control unit.
 The pedal assembly is adjusted forward/backward by changing the rotation direction of pedal adjustingmotor.
Component Function CheckINFOID:0000000003775637
1. CHECK FUNCTION
1. Select “ADJ PEDAL MOTOR” in “Active test” mode with CONSULT-III.
2. Check the pedal adjusting motor operation.
Is the operation of relevant parts normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-100, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775638
1. CHECK PEDAL ADJUSTING MOTOR POWER SUPPLY
1. Turn the ignition switch OFF.
2. Perform “Active test” (“ADJ PEDAL MOTOR”) with CONSULT-lll.
3. Check voltage between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace pedal adjusting motor assembly. Refer to ADP-169, "Removal and Installation".
NO >> GO TO 2
2. CHECK PEDAL ADJUSTING MOTOR CIRCUIT
Test item Description
ADJ PEDAL MOTOR OFF
Pedal adjusting motor Sto p
FR Forward
RR Backward
Te r m i n a l
Test ItemVoltage
(V)
(Approx.)
(+)
(-)
Automatic
drive posi-
tioner con- trol unit
connector Te r m i n a l
M34 37
Ground ADJ PED-
AL MOTOR OFF 0
RR (backward) 0
FR (forward)
Battery
voltage
45 OFF 0
RR (backward)
Battery
voltage
FR (forward) 0
PIIA4806E
Revision: December 20092009 QX56