2010 INFINITI QX56 sensor

DIAGNOSIS SYSTEM (DRIVER SEAT C/U)ADP-29
< FUNCTION DIAGNOSIS >
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ACTIVE TEST
CAUTION:
When driving vehicle, do not perform active test.
MIR CHNG SW–R “ON/OFF” ××ON/OFF status judged from the door mirror remote control
switch (switching to right) signal.
MIR CHNG SW–L “ON/OFF” ××ON/OFF status judged from the door mirror remote control
switch (switching to left) signal.
TILT SW-UP “ON/OFF”×× ON/OFF status judged from the ADP steering switch (UP)
signal.
TILT SW-DOWN “ON/OFF”×× ON/OFF status judged from the ADP steering switch
(DOWN) signal.
PEDAL SW-FR “ON/OFF”×× ON/OFF status judged from the pedal adjusting switch (for-
ward) signal.
PEDAL SW-RR “ON/OFF”×× ON/OFF status judged from the pedal adjusting switch
(backward) signal.
DETENT SW “ON/OFF”×× The selector lever position “OFF (P position) / ON (other
than P position)” judged from the detention switch signal.
STARTER SW “ON/OFF”×× Ignition key switch ON (START, ON) /OFF (ACC, OFF) sta-
tus judged from the ignition switch signal.
SLIDE PULSE —–×Value (32768) when battery connections are standard. If it
moves backward, the value increases. If it moves forward,
the value decreases.
RECLN PULSE —–×Value (32768) when battery connections are standard. If it
moves backward, the value increases. If it moves forward,
the value decreases.
LIFT FR PULSE —–×Value (32768) when battery connections are standard. If it
moves DOWN, the value increases. If it moves UP, the val-
ue decreases.
LIFT RR PULSE —–×Value (32768) when battery connections are standard. If it
moves DOWN, the value increases. If it moves UP, the val-
ue decreases.
MIR/SEN RH U–D “V”–×Voltage input from door mirror sensor (passenger side) up/
down is displayed.
MIR/SEN RH R–L “V”–×Voltage input from door mirror sensor (passenger side) left/
right is displayed.
MIR/SENLHU–D “V”–×Voltage input from door mirror
sensor (driver side) up/down
is displayed.
MIR/SENLHR–L “V”–×Voltage input from door mirror sensor (driver side) left/right
is displayed.
PEDAL SEN “V”–×Pedal position (voltage) judged from the pedal adjusting
sensor signal is displayed.
Monitor Item
UnitMain
Signals Selection
From
Menu Contents
Test item
Description
SEAT SLIDE Activates/deactivates the sliding motor.
SEAT RECLINING Activates/deactivates the reclining motor.
SEAT LIFTER FR Activates/deactivates the lifting motor (front).
SEAT LIFTER RR Activates/deactivates the lifting motor (rear).
ADJ PEDAL MOTOR Activates/deactivates the pedal adjusting motor.
TILT MOTOR Activates/deactivates the tilt motor.
MIRROR MOTOR RH Activates/deactivates the mirror motor (passenger side).
Revision: April 20092010 QX56

ADP-38
< COMPONENT DIAGNOSIS >
B2118 TILT SENSOR
B2118 TILT SENSOR
DescriptionINFOID:0000000005147465
• 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 control unit will be changed according to a change of tiltsensor resistance. Automatic drive positioner control unit calculates the tilt position from the voltage.
DTC LogicINFOID:0000000005147466
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. STEP 1
Turn ignition switch ON.
>> GO TO 2
2. STEP 2
Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected?
YES >> Perform diagnosis procedure. Refer to ADP-38, "DiagnosisProcedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000005147467
Regarding Wiring Diagram information, refer to ADP-138, "Wiring Diagram".
1. CHECK TILT SENSOR SIGNAL
1. Turn ignition switch ON.
2. Select “TILT SEN” in “Data m onitor” mode with CONSULT-III.
3. Check tilt sensor signal under the following condition.
Is the value normal?
YES >> GO TO 4
NO >> GO TO 2
2. CHECK FUNCTION
DTC No. Trouble diagnosis
name DTC detecting condition
Possible cause
B2118 TILT SENSOR The input voltage of tilt sensor is 0.1V or less or 4.9V
or more. • Harness and connectors
(Tilt sensor circuit is opened/
shorted, tilt sensor power supply
circuit is opened/shorted.)
• Tilt sensor
Monitor item Condition Value
TILT SEN Tilt position To p
2 V
Bottom 4 V
Revision: April 20092010 QX56

B2118 TILT SENSORADP-39
< COMPONENT DIAGNOSIS >
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1. Turn ignition switch OFF.
2. Check voltage between automatic drive positioner connector
and ground.
Is the inspection result normal?
YES >> Tilt sensor circuit is OK.
NO >> GO TO 3
3. CHECK HARNESS CONTINUITY
1. Disconnect automatic drive positioner control unit and tilt motor assembly.
2. Check continuity between automatic drive positioner connector M33 (A), M34 (B) terminals 7, 33, 41 and tilt motor assembly
connector M85 (C) terminals 2, 3, 4.
3. Check continuity between automat ic drive positioner control unit
connectors M33 (A), M34 (B ) terminals 7, 33, 41 and ground.
Is the inspection result normal?
YES >> Replace tilt motor assembly. Refer to ST-19, "Removal
and Installation".
NO >> Repair or replace harness.
4. CHECK DOOR MIRROR OPERATION
1. Connect automatic drive positioner c ontrol unit and tilt motor assembly.
2. Turn ignition switch ON.
3. Check door mirror operation with memory function.
Is the operation normal?
YES >> Replace tilt motor assembly. Refer to ST-19, "Removal and Installation".
NO >> GO TO 5
5. 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-175, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M33 7 Ground Tilt top position 2
Tilt bottom position
4
LIIA0485E
7 - 3: Continuity should exist.
33 - 2 : Continuity should exist.
41 - 4 : Continuity should exist.
7 - Ground : Continuity should not exist.
33 - Ground : Continuity should not exist.
41 - Ground : Continuity should not exist.
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Revision: April 20092010 QX56

ADP-40
< COMPONENT DIAGNOSIS >
B2120 ADJ PEDAL SENSOR
B2120 ADJ PEDAL SENSOR
DescriptionINFOID:0000000005147468
• The pedal adjusting sensor is installed in the pedal assembly.
• The resistance of pedal adjusting sensor is changed according to the forward/backward position of pedalassembly.
• The terminal voltage of automatic drive positioner control unit will be changed according to a change of pedal adjusting sensor resistance. Automatic drive pos itioner control unit calculates the pedal assembly
position from the voltage.
DTC LogicINFOID:0000000005147469
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. STEP 1
Turn ignition switch ON.
>> GO TO 2
2. STEP 2
Check “Self diagnostic result” with CONSULT-III.
Is the DTC is detected?
YES >> Perform diagnosis procedure. Refer to ADP-40, "DiagnosisProcedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000005147470
Regarding Wiring Diagram information, refer to ADP-138, "Wiring Diagram".
1. CHECK PEDAL ADJUSTING SENSOR SIGNAL
1. Turn ignition switch ON.
2. Select “PEDAL SEN” in “Dat a monitor” mode with CONSULT-III.
3. Check the pedal adjusting sensor signal under the following condition.
Is the value normal?
YES >> Pedal adjusting circuit is OK.
NO >> GO TO 2
2. CHECK PEDAL ADJUSTING SENSO R CIRCUIT HARNESS CONTINUITY
DTC No.Trouble diagnosis
name DTC detecting condition
Possible cause
B2120 ADJ PEDAL SENSOR The input voltage of pedal adjusting sensor is 0.5V
or less or 4.5V or higher, for 0.5 seconds or more. • Harness and connectors
(Pedal adjusting sensor circuit is
opened/shorted, pedal adjusting
sensor power supply circuit is
opened/shorted.)
• Pedal adjusting sensor
Monitor item Condition Value
PEDAL SEN Pedal position Forward
0.5V
Backward 4.5V
Revision: April 20092010 QX56

B2120 ADJ PEDAL SENSORADP-41
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1. Disconnect automatic drive positioner control unit and pedal adjusting motor assembly.
2. Check continuity between automatic drive positioner connector
M33 (A), M34 (C) terminals 8, 33, 41 and pedal adjusting motor
assembly connector E110 (B) terminals 3, 4, 5.
3. Check continuity between automatic drive positioner control unit connector M33 (A), M34 (C) terminals 8, 33, 41 and ground.
Is the inspection result normal?
YES >> Replace pedal adjusting motor assembly. Refer to ADP-
178, "Removal and Installation".
NO >> Repair or replace harness. 8 - 4
: Continuity should exist.
33 - 3 : Continuity should exist.
41 - 5 : Continuity should exist.
8 - Ground : Continuity should not exist.
33 - Ground : Continuity should not exist.
41 - Ground : Continuity should not exist.
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Revision: April 20092010 QX56

ADP-44
< COMPONENT DIAGNOSIS >
B2128 UART COMMUNICATION LINE
B2128 UART COMMUNICATION LINE
DescriptionINFOID:0000000005147474
Driver seat control unit performs UART communication with the automatic drive positioner control unit using 2
communication lines, TX and RX line. Driver seat cont rol unit receives the operation signals of pedal adjusting
switch, door mirror remote control switch, set switch and memory switch and the position signals of adjustable
pedal sensor and door mirror sensor from the automatic drive positioner control unit and transmits the opera-
tion request signal.
DTC LogicINFOID:0000000005147475
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. STEP 1
Turn ignition switch ON.
>> GO TO 2
2. STEP 2
Operate pedal adjusting switch for more than 2 seconds.
>> GO TO 3
3. PROCEDURE 3
Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected?
YES >> Perform diagnosis procedure. Refer to ADP-44, "DiagnosisProcedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000005147476
Regarding Wiring Diagram information, refer to ADP-119, "Wiring Diagram".
1. CHECK UART COMMUNICATION LINE CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver seat contro l unit and automatic drive posi-
tioner control unit.
3. Check continuity between driver seat control unit harness con- nector and automatic drive positioner control unit harness con-
nector.
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
B2128 UART COMM The communication between driver seat control unit
and automatic drive positioner control unit is interrupt-
ed for a period of time. • UART communication line
(UART communication line is
open or shorted)
• Driver seat control unit
• Automatic drive positioner control unit
Driver seat control unit connector Te r m i n a lAutomatic drive positioner
control unit connector Terminal Continuity
PIIA4598E
Revision: April 20092010 QX56

SLIDING SENSORADP-81
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SLIDING SENSOR
DescriptionINFOID:0000000005147526
• 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:0000000005147527
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-81, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000005147528
Regarding Wiring Diagram information, refer to ADP-119, "Wiring Diagram".
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 slidingOperate (forward)
Change (increase)
Operate (backward) Change (decrease)
Release No change
Te r m i n a l s
ConditionVoltage 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: April 20092010 QX56

ADP-82
< COMPONENT DIAGNOSIS >
SLIDING SENSOR
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 sliding operation) with memory function.
Is the inspection result normal?
YES >> Replace sliding motor LH. (Built in power seat frame assembly). Refer to SE-69, "Disassembly
and Assembly".
NO >> Replace driver seat control unit. Refer to ADP-174, "
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-174, "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
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Revision: April 20092010 QX56