2010 INFINITI QX56 Air

PRE-INSPECTION FOR DIAGNOSTICADP-9
< BASIC INSPECTION >
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PRE-INSPECTION FOR DIAGNOSTIC
Basic InspectionINFOID:0000000005147424
1. CHECK POWER SUPPLY AND DROUND CIRCUIT
Check the power supply and ground circuit as shown below.
• Driver seat control unit: Refer to ADP-47, "
DRIVER SEAT CONTROL UNIT : DiagnosisProcedure".
• Automatic drive positioner control unit: Refer to ADP-48, "
AUTOMATIC DRIVE POSITIONER CONTROL
UNIT : DiagnosisProcedure".
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace the malfunctioning part.
2. CHECK MANUAL FUNCTION
Check the manual function operati ons by operating the relevant switches as shown below.
• Seat (slide, reclining, lifting front, lifting rear)
• Pedal assembly (forward, backward)
• Steering wheel (upward, downward)
• Door mirror
Do all manual functions operate normally?
YES >> GO TO 3
NO (Seat, pedal, door mirror)>>Go to SYMPTOM 1, refer to ADP-169, "
Symptom Table". And, GO TO 4 if
the result of SYMPTOM 1 is OK.
3. CHECK MEMORY FUNCTION 1
Register the seat positions (refer to Owner’s Manual) and check that all parts of the seat, pedals, steering
wheel and door mirrors move to their memory positions correctly.
Are the operations normal?
YES >> Check each malfunction according to the instruction of the SYMPTOM 4, refer to ADP-169,
"Symptom Table".
No (memory indicator operates normally)>> Go to SYMPTOM 2, refer to ADP-169, "
Symptom Table".
No (memory indicator does not operate normally either)>> GO TO 5
4. CHECK MEMORY FUNCTION 2
Register the seat positions (refer to Owner’s Manual) and check that all parts of the seat, pedals, steering
wheel and door mirrors move to their memory positions correctly.
Are the operations normal?
YES >> Check intermittent incident. Refer to GI-38, "Intermittent Incident".
NO >> GO TO 7
5. CHECK SEAT MEMORY SW ITCH/MEMORY INDICATOR
Check the seat memory switch/memory switch indicator of the SYMPTOM 5, refer to ADP-169, "
Symptom
Table".
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair or replace the malfunctioning part.
6. CHECK OPERATION CONDITION
Check the memory operation conditions (refer to ADP-12, "
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Description").
Are all operation conditions fulfilled?
YES >> Go to SYMPTOM 6, refer to ADP-169, "Symptom Table".
NO >> Fulfill the operation conditions. Refer to ADP-12, "
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Description".
7. CHECK MECHANISM
Check for the following.
Revision: April 20092010 QX56

ADP-10
< BASIC INSPECTION >
PRE-INSPECTION FOR DIAGNOSTIC
• Mechanism deformation or pinched foreign materials.
• Interference with other parts because of poor installation.
Is any malfunction present in the relevant parts?
YES >> Go to SYMPTOM 3, refer to ADP-169, "Symptom Table".
NO >> Repair or replace the malfunctioning part.
Revision: April 20092010 QX56

U1000 CAN COMM CIRCUITADP-31
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000005147447
Refer to LAN-4, "System Description".
DTC LogicINFOID:0000000005147448
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. STEP 1
Turn ignition switch ON and wait at least 3 seconds.
>> GO TO 2
2. STEP 2
Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected?
YES >> Perform diagnosis procedure. Refer to LAN-14, "Trouble Diagnosis Procedure".
NO >> Inspection End.
Special Repair RequirementINFOID:0000000005147449
Refer to Owner’s Manual.
DTC Trouble diagnosis
name DTC detecting condition
Possible cause
U1000 CAN COMM CIR-
CUIT • Driver seat control unit cannot communicate to other
control units.
• Driver seat control unit c annot communicate for more
than the specified time. • Harness or connectors
(CAN communication line is
open or shorted)
Revision: April 20092010 QX56

ADP-36
< COMPONENT DIAGNOSIS >
B2117 ADJ PEDAL MOTOR
B2117 ADJ PEDAL MOTOR
DescriptionINFOID:0000000005147462
• 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.
DTC LogicINFOID:0000000005147463
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-36, "DiagnosisProcedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000005147464
Regarding Wiring Diagram information, refer to ADP-138, "Wiring Diagram".
1. CHECK PEDAL ADJUSTING MECHANISM
Check the following.
• Operation malfunction caused by pedal adjusting mechanism deformation or pinched harness or other for- eign materials
• Operation malfunction and interference wit h other parts by poor installation
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace the malfunctioning part and check again.
2. CHECK FUNCTION
1. Turn ignition switch ON.
2. Check “ADJ PEDAL MOTOR” in "Active test" mode with CONSULT-III.
Is the inspection result normal?
YES >> Pedal adjusting motor circuit is OK.
DTC No. Trouble diagnosis
name DTC detecting condition
Possible cause
B2117 ADJ PEDAL MOTOR When any manual or automatic operations are not
performed, if motor operation is detected for 0.1
second or more, status is judged "Output error". • Harness and connectors
(pedal adjusting motor circuit is
opened/shorted, pedal adjusting
motor power supp ly circuit is
opened/shorted.)
• Pedal adjusting motor
Test item Description
ADJ PEDAL MOTOR The pedal adjusting motor is activated by receiving the drive signal.
Revision: April 20092010 QX56

B2117 ADJ PEDAL MOTORADP-37
< COMPONENT DIAGNOSIS >
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NO >> GO TO 3
3. CHECK PEDAL ADJUSTING MOTOR CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit and pedal adjusting motor.
3. Check continuity between automatic drive positioner control unit
connector M34 (A) terminals 37, 45 and pedal adjusting motor
connector E109 (B) terminals 1, 2.
4. Check continuity between automat ic drive positioner control unit
connector M34 (A) terminals 37, 45 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK AUTOMATIC DRIVE POSITION ER CONTROL UNIT OUTPUT SIGNAL
1. Connect the automatic drive positioner control unit and pedal adjusting motor assembly.
2. Check voltage between automatic drive positioner control unit
connector and ground.
Is the inspection result normal?
YES >> Replace pedal adjusting motor assembly. Refer to ADP-178, "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. 37 - 1
: Continuity should exist.
45 - 2 : Continuity should exist.
37 - Ground : Continuity should not exist.
45 - Ground : Continuity should not exist.
ALJIA0195ZZ
Connec-
tor Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M34 37
Ground Pedal adjusting switch ON
(FORWARD operation)
Battery voltage
Other than above 0
45 Pedal adjusting switch ON
(BACKWARD operation)
Battery voltage
Other than above 0
PIIA4806E
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

B2120 ADJ PEDAL SENSORADP-41
< COMPONENT DIAGNOSIS >
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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.
ALJIA0327ZZ
Revision: April 20092010 QX56

B2126 DETENT SWADP-43
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NO >> GO TO 3
3. CHECK A/T SHIFT SELECTOR (PARK POSITION SWITCH) HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/T shift selector and driver seat control unit.
3. Check continuity between driver seat control unit connector B202 (A) terminal 21 and A/T shif t selector connector M203 (B)
terminal 6.
4. Check continuity between driver seat control unit connector B202 (A) terminal 21 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK PARK POSITION SWITCH
Check continuity between A/T shift selector (park position switch)
terminals as follows.
Is the inspection result normal?
YES >> GO TO 5
NO >> Replace A/T shift selector. Refer to TM-165, "
A/T Shift
Selector Removal and Installation".
5. 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. 6 - 21
: Continuity should exist.
21 - Ground : Continuity should not exist.
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TerminalsConditionContinuity
56 P position
Yes
Other than P position No
ALJIA0486ZZ
Revision: April 20092010 QX56