2010 INFINITI QX56 air condition

B2118 TILT SENSORADP-39
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
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.
ALJIA0291ZZ
Revision: April 20092010 QX56

B2126 DETENT SWADP-43
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
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.
ALJIA0194ZZ
TerminalsConditionContinuity
56 P position
Yes
Other than P position No
ALJIA0486ZZ
Revision: April 20092010 QX56

ADP-46
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Diagnosis ProcedureINFOID:0000000005370325
Regarding Wiring Diagram information, refer to BCS-49, "Wiring Diagram".
1. CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Terminal No. Signal nameFuses and fusible link No.
57 Battery power supply 22 (15A)
70 F (50A)
11 Ignition ACC or ON 4 (10A)
38 Ignition ON or START 59 (10A)
ConnectorTe r m i n a l s
Power
source Condition
Voltage (V) (Ap-
prox.)
(+) (-)
M18 11 Ground
ACC
power
supply Ignition
switch
ACC or ON Battery voltage
38 Ground Ignition
power
supply Ignition
switch ON or START Battery voltage
M20 57 Ground
Battery
power
supply Ignition
switch
OFF Battery voltage
70 Ground Battery
power
supply Ignition
switch OFF Battery voltage
LIIA2415E
Revision: April 20092010 QX56

POWER SUPPLY AND GROUND CIRCUITADP-47
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair or replace harness.
DRIVER SEAT CONTROL UNIT
DRIVER SEAT CONTROL UNIT : Diagnosis ProcedureINFOID:0000000005147478
NOTE:
Do not disconnect the battery negative terminal and the dr iver seat control unit connector until DTC is con-
firmed with CONSULT-III.
Regarding Wiring Diagram information, refer to ADP-119, "
Wiring Diagram".
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconeect driver seat control unit.
3. Check voltage between driver s eat control unit harness connec-
tor and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Check the following. • Repair or replace harness between driver seat control unit and fuse block (J/B).
• Circuit breaker.
2. CHECK GROUND CIRCUIT
Check continuity between the driv er seat control unit harness con-
nector and ground.
Is the inspection result normal?
YES >> Driver seat control unit power supply and ground circuit are OK.
BCM
GroundContinuity
Connector Terminal
M20 67 Yes
LIIA0915E
Te r m i n a l s
Power
source ConditionVoltage (V)
(Approx.)
(+)
(–)
Driver seat
control unit connector Terminal
B202 6
Ground START
power sup- ply Ignition
switch
START Battery
voltage
B203 33
Battery
power sup-
ply Ignition
switch
OFF
40
LIIA1897E
Driver seat control unit
connector Te r m i n a l
Ground Continuity
B202 32
Ye s
B203 48
PIIA4542E
Revision: April 20092010 QX56

TILT SWITCHADP-63
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Disconnect automatic drive positioner control unit and ADP steering switch.
2. Check continuity between automat ic drive positioner control unit
connector M33 terminals 1, 17 and ADP steering switch connec-
tor M16 terminals 2, 3.
3. Check continuity between automat ic drive positioner control unit
connector M33 terminals 1, 17 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> 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.
Is the inspection result normal?
YES >> Check the condition of the harness and connector.
NO >> Replace or replace harness.
4. CHECK TILT SWITCH
Refer to ADP-63, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5
NO >> Replace ADP steering switch. Refer to ADP-179, "
Removal and Installation".
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.
Component InspectionINFOID:0000000005147501
1. CHECK ADP STEERING WHEEL TILT SWITCH
Check continuity between ADP steer ing switch terminals as follows.
Is the inspection result normal?
YES >> Inspection End. 1 - 2 : Continuity should exist.
17 - 3 : Continuity should exist.
1 - Ground
: Continuity should not exist.
17 - Ground : Continuity should not exist.
LIIA1434E
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: April 20092010 QX56

PEDAL ADJUSTING SWITCHADP-67
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
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.
Component InspectionINFOID:0000000005147505
1. CHECK PEDAL ADJUSTING SWITCH
1. Turn ignition switch OFF.
2. Disconnect pedal adjusting switch.
3. Check continuity between pedal adjusting switch terminals.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace pedal adjusting switch. Refer to SE-66, "
Exploded View".
Te r m i n a l ConditionContinuity
Pedal adjusting switch
1 2
Pedal adjusting switch
(backward) Operate
Yes
Release No
3 Pedal adjusting switch
(forward) Operate
Yes
Release No
LIIA1014E
Revision: April 20092010 QX56

ADP-68
< COMPONENT DIAGNOSIS >
SEAT MEMORY SWITCH
SEAT MEMORY SWITCH
DescriptionINFOID:0000000005147506
The seat memory switch is installed on the front door LH trim. The operation signal is input to the automatic
drive positioner control unit when the memory switch is operated.
Component Function CheckINFOID:0000000005147507
1. CHECK FUNCTION
1. Select “MEMORY SW 1”, “MEMORY SW 2”, "SET SW" in “Data monitor” mode with CONSULT-III.
2. Check seat memory switch signal under the following conditions.
Is the indication normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-68, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000005147508
Regarding Wiring Diagram information, refer to ADP-138, "Wiring Diagram".
1. CHECK MEMORY SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit and seat memory switch.
3. Check continuity between automatic drive positioner control unit harness connector and seat memory switch harness connector.
4. Check continuity between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
Monitor item ConditionStatus
MEMORY SW1 Memory switch 1 Push
ON
Release OFF
MEMORY SW2 Memory switch 2 Push
ON
Release OFF
SET SW Set switch Push
ON
Release OFF
Automatic drive
positioner control unit connector Te r m i n a l
Seat memory
switch connector Terminal Continuity
M33 9
D5 1
Ye s
24 3
25 2
Automatic drive positioner control unit connector Terminal
GroundContinuity
M33 9
No
24
25
PIIA4576E
Revision: April 20092010 QX56

SEAT MEMORY SWITCHADP-69
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
2. CHECK MEMORY SWITCH GROUND CIRCUIT
Check continuity between seat memory switch harness connector
and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK SEAT MEMORY SWITCH
Refer to ADP-69, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 4
NO >> Replace seat memory switch. Refer to ADP-176, "
Removal and Installation".
4. 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.
Component InspectionINFOID:0000000005147509
1. CHECK SEAT MEMORY SWITCH
1. Turn ignition switch OFF.
2. Disconnect seat memory switch.
3. Check continuity between seat memory switch terminals.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace seat memory switch. Refer to ADP-176, "
Removal and Installation".
Seat memory switch connector Te r m i n a l
GroundContinuity
D5 4 Yes
PIIA4821E
Te r m i n a l
Condition Continuity
Seat memory switch
4 1 Memory switch 1
Push
Yes
Release No
2 Memory switch 2 Push
Yes
Release No
3 Set switch Push
Yes
Release No
LIIA1020E
Revision: April 20092010 QX56