2008 INFINITI QX56 steering

TILT SWITCHADP-55
< COMPONENT DIAGNOSIS >
C
DE
F
G H
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K L
M A
B
ADP
N
O P
OK or NG
OK >> GO TO 3
NG >> Repair or replace harness.
3. CHECK ADP STEERING SWITCH GROUND CIRCUIT
Check continuity between ADP steer ing switch connector M16 termi-
nal 1 and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace or replace harness.
4. CHECK TILT SWITCH
Refer to ADP-55, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5
NO >> Replace ADP steering switch.
5. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace automatic driv e positioner control unit.
NO >> Repair or replace the malfunctioning part.
Component InspectionINFOID:0000000001754042
1. CHECK ADP STEERING WHEEL TILT SWITCH
Check continuity between ADP steer ing switch terminals as follows.
OK or NG
OK >> INSPECTION END
NG >> Replace ADP steering switch. 1 - Ground : Continuity should not exist.
17 - Ground : Continuity should not exist.
1 - Ground : Continuity should exist.
LIIA0490E
Terminals
ConditionContinuity
2 1ADP steering switch ON (UP operation) Yes
Other than above
No
3 ADP steering switch ON (DOWN operation) Yes
Other than above
No
LIIA1435E
Revision: March 2010 2008 QX56

TILT SENSORADP-79
< COMPONENT DIAGNOSIS >
C
DE
F
G H
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K L
M A
B
ADP
N
O P
TILT SENSOR
DescriptionINFOID:0000000001754043
• The tilt sensor is installed to the steering column assembly.
• The resistance of tilt sensor is changed according to the up/down position of steering column.
• The terminal voltage of automatic drive positioner c ontrol unit will be changed according to a change of tilt
sensor resistance. Automatic drive positioner control unit calculates the tilt position from the voltage.
Component Function CheckINFOID:0000000001754044
1. CHECK FUNCTION
1. Select “TILT SEN” in “Data monitor” mode with CONSULT-III.
2. Check the tilt sensor signal under the following condition.
Is the indication normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-79, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001754045
1. CHECK TILT SENSOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between automatic drive positioner connector
and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 2
2. CHECK HARNESS CONTINUITY
Monitor item Condition Value
TILT SEN Tilt position Change between
1.2 V (Close to top)
3.4 V (Close to bottom)
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M33 7 Ground Tilt top position 2
Tilt bottom position
4
LIIA0485E
Revision: March 2010 2008 QX56

TILT MOTORADP-95
< COMPONENT DIAGNOSIS >
C
DE
F
G H
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K L
M A
B
ADP
N
O P
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
Revision: March 2010 2008 QX56

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

ADP-124
< ECU DIAGNOSIS >
AUTOMATIC DRIVE POSITIONER CONTROL UNIT
AUTOMATIC DRIVE POSITIONER CONTROL UNIT
Reference ValueINFOID:0000000001735555
TERMINAL LAYOUT
PHYSICAL VALUES
LIIA2449E
Te r m i n a l Wire Col-
or Item
Condition Voltage (V)
(Approx.)
1 W/G ADP steering switch TILT UP ADP steering switch in UP position
0
Other than above 5
2 LG Changeover switch RH signal Changeover switch in RH position
0
Other than above 5
3 Y/B Mirror switch UP signal Mirror switch in UP position
0
Other than above 5
4 V/W Mirror switch LEFT signal Mirror switch in LEFT position
0
Other than above 5
5R/B Mirror sensor (
RH vertical) sig-
nal Mirror motor RH is operated UP or
DOWN Changes between 3.4 (close to
peak) 0.6 (close to valley)
6L/Y Mirror sensor (L
H vertical) sig-
nal Mirror motor LH is operated UP or
DOWN Changes between 3.4 (close to
peak) 0.6 (close to valley)
7 Y/BR Tilt sensor input Tilt position TOP
2
Tilt position BOTTOM 4
8 BR/Y Pedal sensor input signal Pedal position front end
0.5
Pedal position rear end 4.5
9 LG/B Seat memory switch 1 signal Memory switch 1 ON
0
Memory switch 1 OFF 5
10 L UART LINE (TX) Pedal adjusting switch ON (FOR-
WARD or BACKWARD operation)
12 P Seat memory switch indictor 1
signal Memory switch 1 ON
0
Memory switch 1 OFF Battery voltage
PIIA4813E
Revision: March 2010 2008 QX56

AUTOMATIC DRIVE POSITIONER CONTROL UNITADP-125
< ECU DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
13 Y/G Seat memory switch indictor 2
signal Memory switch 2 ON
0
Memory switch 2 OFF Battery voltage
14 GR/R Mirror motor RH UP signal Mirror motor RH is operated
UP1.5 - Battery voltage
Other than above 0
15 V/R Mirror motor RH LEFT signal Mirror motor RH is operated
LEFT1.5 - Battery voltage
Other than above 0
16 O Mirror motor LH DOWN signal
Mirror motor LH is operated
DOWN 1.5 - Battery voltage
Other than above 0
Mirror motor LH RIGHT signal Mirror motor LH is operated
RIGHT 1.5 - Battery voltage
Other than above 0
17 G/B ADP steering switch TILT
DOWN ADP steering switch in DOWN posi-
tion
0
Other than above 5
18 BR/W Changeover switch LH signal Changeover switch in LH position
0
Other than above 5
19 SB Mirror switch DOWN signal Mirror switch in DOWN position
0
Other than above 5
20 GR Mirror switch RIGHT signal Mirror switch in RIGHT position
0
Other than above 5
21 L/W Mirror sensor (RH horizontal)
signal Mirror motor RH is operated LEFT or
RIGHT Changes between 3.4 (close to left
edge) 0.6 (close to right edge)
22 G Mirror sensor (LH horizontal)
signal Mirror motor LH is operated LEFT or
RIGHT Changes between 3.4 (close to left
edge) 0.6 (close to right edge)
24 G/O Seat memory set switch signal Set switch 1 ON
0
Set switch 1 OFF 5
25 P/L Seat memory switch 2 signal Memory switch 2 ON
0
Memory switch 2 OFF 5
26 W UART LINE (RX) Pedal adjusting switch ON (FOR-
WARD or BACKWARD operation)
30 Y Mirror motor RH DOWN signal
Mirror motor RH is operated
DOWN 1.5 - Battery voltage
Other than above 0
Mirror motor RH RIGHT signal Mirror motor RH is operated
RIGHT 1.5 - Battery voltage
Other than above 0
31 R Mirror motor LH UP signal Mirror motor LH is operated
UP1.5 - Battery voltage
Other than above 0
32 BR Mirror motor LH LEFT signal Mirror motor LH is operated LEFT
1.5 - Battery voltage
Other than above 0
33 W/L Sensor power supply —5
34 Y/R Battery power supply —Battery voltage
Te r m i n a l
Wire Col-
or Item
Condition Voltage (V)
(Approx.)
PIIA4814E
Revision: March 2010 2008 QX56

ADP-126
< ECU DIAGNOSIS >
AUTOMATIC DRIVE POSITIONER CONTROL UNIT
35 R Tilt motor UP signalADP steering switch in UP position Battery voltage
Other than above
0
37 G Pedal adjust motor FORWARD
signal Pedal adjust motor FORWARD op-
eration (Motor operated)
Battery voltage
Other than above 0
39 L/B Battery power supply —Battery voltage
40 B/W Ground —0
41 W/G Sensor ground —0
42 V Tilt motor DOWN signal ADP steering switch in DOWN posi-
tion
Battery voltage
Other than above 0
45 R Pedal adjust motor BACK-
WARD signal Pedal adjust motor BACKWARD op-
eration (Motor operated)
Battery voltage
Other than above 0
48 B Ground —0
Te r m i n a l
Wire Col-
or Item
Condition Voltage (V)
(Approx.)
Revision: March 2010 2008 QX56

ADP SYSTEM SYMPTOMSADP-155
< SYMPTOM DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
SYMPTOM DIAGNOSIS
ADP SYSTEM SYMPTOMS
Symptom TableINFOID:0000000001735561
NOTE:
Always perform the “Basic Inspection” before perfo rming diagnosis in the following table. Refer to ADP-5,
"Work Flow".
SYMPTOM 1
SYMPTOM 2
SYMPTOM 3
Symptom Diagnosis procedureReference
page
Manual functions (for specific part) do
not operate Sliding operation
Check sliding switch. ADP-46
Reclining operationCheck reclining switch. ADP-48
Lifting operation (front) Check lifting switch (front). ADP-50
Lifting operation (rear) Check lifting switch (rear).ADP-52
Pedal operation1. Check pedal adjusting switch.
ADP-562. Check pedal adjusting sensor.ADP-81
Steering wheel tilt operation Check ADP steering switch ADP-54
Door mirror operation1. Changeover switch.
ADP-612. Mirror switchADP-63
All parts of seatCheck power seat switch ground cir-
cuit. ADP-66
Symptom
Diagnosis procedureReference
page
Memory functions (for specific part) do
not operate Sliding operation
Check sliding sensor. ADP-71
Reclining operationCheck reclining sensor. ADP-73
Lifting operation (front) Check lifting sensor (front). ADP-75
Lifting operation (rear) Check lifting sensor (rear).ADP-77
Pedal operationCheck pedal adjusting sensor. ADP-81
Steering wheel tilt operation Check tilt sensor ADP-79
Door mirror operation Check door mirror sensor. Driver side:
ADP-83Passenger side:
ADP-85
Symptom Diagnosis procedureReference
page
Memory functions and manual func-
tions (for specific part) do not operate Sliding operation
Check sliding motor. ADP-87
Reclining operationCheck reclining motor. ADP-89
Lifting operation (front) Check lifting motor (front). ADP-91
Lifting operation (rear) Check lifting motor (rear).ADP-93
Pedal operationCheck pedal adjusting motor. ADP-97
Steering wheel operation Check tilt motor ADP-95
Door mirror operation Check door mirror motor.ADP-99
Revision: March 2010 2008 QX56