2009 INFINITI QX56 fuses

INL-14
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Diagnosis ProcedureINFOID:0000000004109550
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
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair or replace harness.
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
BCM
GroundContinuity
Connector Terminal
M20 67 Yes
LIIA0915E
Revision: December 20092009 QX56

MWI-30
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
COMBINATION METER
COMBINATION METER : Diagnosis ProcedureINFOID:0000000003776633
1.CHECK FUSES
Check for blown combination meter fuses.
Is the inspection result normal?
YES >> GO TO 2
NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.POWER SUPPLY CIRCUIT CHECK
1. Disconnect combination meter connector M24.
2. Check voltage between combination meter harness connector M24 terminals 21, 37, 40 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Check harness for open between combination meter and fuse.
3.GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Disconnect combination meter connector M23.
3. Check continuity between combination meter harness connector M23 terminal 47, 52 and ground, and connector M24 terminal 20
and ground.
Is the inspection result normal?
YES >> Inspection End.
NO >> Check ground harness.
BCM (BODY CONTROL MODULE)
Unit Power source Fuse No.
Combination meter Battery 3
Ignition switch ON or START 14
Ignition switch ACC or ON 4
TerminalsIgnition switch position
(+) (–) OFF ACC ON START
Connector Terminal
M24 21
Ground 0V 0V
Battery
voltage Battery
voltage
37 0VBattery
voltage Battery
voltage 0V
40 Battery
voltage Battery
voltage Battery
voltage Battery
voltage
AWNIA0204ZZ
Te r m i n a l s
Continuity
(+)
(–)
Connector Terminal
A: M23 47
Ground Yes
52
B: M24 20
AWNIA0205ZZ
Revision: December 20092009 QX56

MWI
POWER SUPPLY AND GROUND CIRCUITMWI-31
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
BCM (BODY CONTROL MODULE) : Diagnosis ProcedureINFOID:0000000004225393
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
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair or replace harness.
IPDM E/R (INTELLIGENT POWER DIST RIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
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
BCM
GroundContinuity
Connector Terminal
M20 67 Yes
LIIA0915E
Revision: December 20092009 QX56

MWI-32
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
agnosis Procedure
INFOID:0000000004225394
1. CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or 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 BATTERY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R.
3. Check voltage between IPDM E/R harness connectors and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between IPDM E/R harness connectors and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair or replace harness.
Terminal No. Signal nameFuses and fusible link No.
1 Battery A, D
2 Battery C
12 Ignition switch ON or START 59
TerminalsIgnition switch position
(+) (−) OFF ON START
Connector Terminal
E118 (A) 1
Ground Battery
voltage Battery
voltage Battery
voltage
2 Battery
voltage Battery
voltage Battery
voltage
E119 (B) 12 0VBattery
voltage Battery
voltage
AWMIA0023ZZ
IPDM E/R
GroundContinuity
Connector Terminal
E122 (A) 38
Ye s
E124 (B) 59
AWMIA0024ZZ
Revision: December 20092009 QX56

PCS-18
< COMPONENT DIAGNOSIS >[IPDM E/R]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000003776501
1. CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or 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 BATTERY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R.
3. Check voltage between IPDM E/R harness connectors and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between IPDM E/R harness connectors and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair or replace harness.
Terminal No. Signal nameFuses and fusible link No.
1 Battery A, D
2 Battery C
12 Ignition switch ON or START 59
TerminalsIgnition switch position
(+) (−) OFF ON START
Connector Terminal
E118 (A) 1
Ground Battery
voltage Battery
voltage Battery
voltage
2 Battery
voltage Battery
voltage Battery
voltage
E119 (B) 12 0VBattery
voltage Battery
voltage
AWMIA0023ZZ
IPDM E/R
GroundContinuity
Connector Terminal
E122 (A) 38
Ye s
E124 (B) 59
AWMIA0024ZZ
Revision: December 20092009 QX56

POWER SUPPLY AND GROUND CIRCUITSCS-17
< COMPONENT DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
SCS
N
O P
POWER SUPPLY AND GROUND CIRCUIT
SUSPENSION CONTROL UNIT
SUSPENSION CONTROL UNIT : Diagnosis ProcedureINFOID:0000000003772336
1.CHECK FUSES
Check that the following fuses of the sus pension control unit are not are not blown.
Are the fuses OK?
YES >> GO TO 2.
NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.POWER SUPPLY CIRCUIT CHECK
1. Disconnect suspension control unit connector B3.
2. Check voltage between the suspension control unit connector B3 and ground.
Are the voltage results as specified?
YES >> GO TO 3.
NO >> • Check connector housings for disconnected or loose terminals. • Repair harness or connector.
3.GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Check continuity between suspension control unit harness con- nector B3 and ground.
Is continuity present?
YES >> Inspection End.
NO >> Repair harness or connector.
SUSPENSION AIR COMPRESSOR
SUSPENSION AIR COMPRESSOR : Diagnosis ProcedureINFOID:0000000003772337
1.CHECK COMPRESSOR MOTOR RELAY OPRATION
CONSULT-III
Unit Terminals Signal name Fuse No.
Suspension control unit 7
Battery power 29
6 Ignition switch ON or START 12
(+)
(-) OFF ACC ON
Connector Terminal
B3 7Ground
Battery
voltage Battery
voltage Battery
voltage
6Ground0V 0V Battery
voltage
AWEIA0114ZZ
Connector Terminal —Continuity
B3 16Ground Yes
ALEIA0028GB
Revision: December 20092009 QX56

THIRD SEATSE-19
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
THIRD SEAT
Power Supply and Ground Circu it Check for Third Row Power Folding Seat Control
Unit
INFOID:0000000003775447
1.CHECK FUSES AND FUSIBLE LINK
Check for blown fuses or fusible link.
Are any fuses or fusible links blown?
YES >> Install new fuse. Eliminate cause of malfunction if fuse blows again.
NO >> GO TO 2
2.POWER SUPPLY CIRCUIT CHECK
1. Disconnect third row power folding seat control unit connectors B401 and B402.
2. Check voltage between third row power folding seat control unit harness connectors B401, B402 terminals 1, 8, 13, 14 and
ground.
Are the inspection results normal?
YES >> GO TO 3
NO >> Check harness for open between third row power folding seat control unit and fuse or fusible link.
3.GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Check continuity between third row power folding seat control unit harness connector B402 terminals 16, 18, 21 and ground.
Do all terminals have ground?
YES >> Inspection End.
NO >> Check harness for ground.
Unit Power source Fuse or Fusible Link Location
Third row power folding seat control unit Battery
F
Fuse and fusible link box
19 Fuse block (J/B)
Ignition switch ON or START 14
TerminalsIgnition switch position
(+) (–) OFF ON START
Connector Terminal
A: B401 1
Ground Battery
voltage
80 VBattery
voltage
B: B402 13
Battery
voltage
14 Battery
voltage
ALJIA0274ZZ
Te r m i n a l s
Continuity
(+)
(–)
Connector Terminal
B402 16
Ground Yes
18
21
ALJIA0275ZZ
Revision: December 20092009 QX56

SEC-38
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
INTELLIGENT KEY UNIT
INTELLIGENT KEY UNIT
: Diagnosis ProcedureINFOID:0000000004221471
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit harness connector M70 terminals 6, 11 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace Intelligent Key unit power supply circuit.
2.CHECK GROUND CIRCUIT
Check continuity between Intelligent Key unit harness connector
M70 terminal 12 and ground.
Is the inspection result normal?
YES >> Power supply and ground circuits are OK.
NO >> Repair or replace the Intelligent Key unit ground circuit.
BCM
BCM : Diagnosis ProcedureINFOID:0000000004221470
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
Connector Terminals Ignition switch position
M70 (+) (–) OFF
ON
6 Ground 0V Battery voltage
11 Battery voltage Battery voltage
WIIA1171E
12 - Ground : Continuity should exist.
WIIA1172E
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)
Revision: December 20092009 QX56