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LIFTING MOTOR (FRONT)ADP-91
< COMPONENT DIAGNOSIS >
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LIFTING MOTOR (FRONT)
DescriptionINFOID:0000000001735534
• The lifting motor (front) is installed to the seat slide cushion frame.
• The lifting motor (front) is activat ed with the driver seat control unit.
• The lifter (front) is moved upward/downward by changi ng the rotation direction of lifting motor (front).
Component Function CheckINFOID:0000000001735535
1. CHECK FUNCTION
1. Select “SEAT LIFTER FR” in “A ctive 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-91, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735536
1. CHECK LIFTING MOTOR (FRONT) POWER SUPPLY
1. Turn the ignition switch ACC.
2. Perform “Active test” (“SEAT LIFTER FR”) with CONSULT-lll.
3. Check voltage between driver s eat control unit harness connec-
tor and ground.
Is the inspection result normal?
YES >> Replace lifting motor (front). (Built in seat slide cushion frame.)
NO >> GO TO 2
2. CHECK LIFTING MOTOR (FRONT) CIRCUIT
Test Item Description
SEAT LIFTER FR OFF
Seat lifting (front) St op
UP Upward
DWN Downward
Te r m i n a l
Te s t I t e mVoltage (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: March 2010 2008 QX56
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ADP-92
< COMPONENT DIAGNOSIS >
LIFTING MOTOR (FRONT)
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and lifting motor (front) con-nectors.
3. Check continuity between driver seat control unit harness con- nector and lifting motor (front) harness connector.
4. 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.
NO >> Repair or replace the malfunctioning part.
Driver seat control unit connector Te r m i n a lLifting motor (front)
connector Terminal Continuity
B203 37
B206 6
Ye s
45 4
Driver seat control unit connector Terminal
GroundContinuity
B203 37
No
45
LIIA0698E
Revision: March 2010 2008 QX56
Page 107 of 4083

LIFTING MOTOR (REAR)ADP-93
< COMPONENT DIAGNOSIS >
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LIFTING MOTOR (REAR)
DescriptionINFOID:0000000001735537
• The lifting motor (rear) is installed to the seat slide cushion frame.
• The lifting motor (rear) is activated with the driver seat control unit.
• The seat lifter (rear) is moved upward/downward by c hanging the rotation direction of lifting motor (rear).
Component Function CheckINFOID:0000000001735538
1. CHECK FUNCTION
1. Select “SEAT LIFTER RR” in “Act ive 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-93, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735539
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 s eat control unit harness connec-
tor and ground.
Is the inspection result normal?
YES >> Replace lifting motor (rear). (Built in seat slide cushion frame.)
NO >> GO TO 2
2. CHECK LIFTING MOTOR (REAR) CIRCUIT
Test Item Description
SEAT LIFTER RR OFF
Seat lifting (rear) Stop
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
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ADP-94
< COMPONENT DIAGNOSIS >
LIFTING MOTOR (REAR)
1. Disconnect driver seat control unit connector 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.
NO >> Repair or replace the malfunctioning part.
Driver seat control unit connector Te r m i n a lLifting motor (rear)
connector Terminal Continuity
B203 38
B207 6
Ye s
39 4
Driver seat control unit connector Te r m i n a l
GroundContinuity
B203 38
No
39
LIIA0699E
Revision: March 2010 2008 QX56
Page 109 of 4083

TILT MOTORADP-95
< COMPONENT DIAGNOSIS >
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TILT MOTOR
DescriptionINFOID:0000000001754046
• 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:0000000001754047
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-95, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001754048
1. CHECK TILT MOTOR HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit and tilt motor.
3. Check continuity between automat ic drive positioner control unit
connector M34 (A) terminals 35, 42 and tilt motor connector M86
(B) terminals 1, 5.
4. Check continuity between automat ic drive positioner control unit
connector M34 (A) terminals 35, 42 and ground.
OK or NG
OK >> GO TO 2
NG >> Repair or replace harness.
2. CHECK AUTOMATIC DRIVE POSITION ER CONTROL UNIT OUTPUT SIGNAL
1. Connect the automatic drive positioner control unit connector and tilt motor.
2. Check voltage between automatic drive positioner control unit
connector and ground.
Test item Description
TILT MOTOR OFF
Steering tilt St op
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
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ADP-96
< COMPONENT DIAGNOSIS >
TILT MOTOR
OK or NG
OK >> Replace tilt motor. Refer to ST-19, "Removal and Installation".
NG >> GO TO 3
3. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace automatic drive positioner control unit.
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: March 2010 2008 QX56
Page 111 of 4083

PEDAL ADJUSTING MOTORADP-97
< COMPONENT DIAGNOSIS >
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PEDAL ADJUSTING MOTOR
DescriptionINFOID:0000000001735540
• 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 adjusting
motor.
Component Function CheckINFOID:0000000001735541
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-97, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735542
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.
NO >> GO TO 2
2. CHECK PEDAL ADJUSTING MOTOR CIRCUIT
Test item Description
ADJ PEDAL MOTOR OFF
Pedal adjusting motor St op
FR Forward
RR Backward
Te r m i n a l
Te s t I t e mVoltage
(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: March 2010 2008 QX56
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ADP-98
< COMPONENT DIAGNOSIS >
PEDAL ADJUSTING MOTOR
1. Disconnect automatic drive positioner control unit and pedaladjusting motor.
2. Check continuity between automatic drive positioner control unit
harness connector and pedal adjusting motor harness connec-
tor.
3. Check continuity between automatic drive positioner control unit harness connector 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 automatic drive positioner control unit.
NO >> Repair or replace the malfunctioning part.
Automatic drive
positioner control unit connector Te r m i n a l
Pedal adjusting
motor connector Terminal Continuity
M34 (A) 37
E109 (B) 1
Ye s
45 2
Automatic drive positioner control unit connector Terminal
GroundContinuity
M34 (A) 37
No
45
ALJIA0195ZZ
Revision: March 2010 2008 QX56