ground INFINITI QX56 2011 Factory Service Manual

INTERIOR ROOM LAMP POWER SUPPLY CIRCUIT
INL-57
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
G H
I
J
K
M A
B
INL
N
O P
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK INTERIOR ROOM LAMP POWER SUPPLY OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the BCM connector.
3. Check continuity between BCM harness connector and each interior room lamp harness connector.
Is the inspection result normal?
YES >> Check for internal short circuit of each interior room lamp.
NO >> Repair or replace harnesses.
3.CHECK INTERIOR ROOM LAMP POWER SUPPLY SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the BCM connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
NO >> Repair or replace harnesses.
BCM Each interior room lamp Continuity
Connector Terminal Connector Terminal
M70 56 Personal lamp R21 3
Existed
Map lamp R18 8
Foot lamp
(driver side)
M89 1
Foot lamp
(passenger side) M90 2
Luggage room lamp B11 2
Automatic back door close switch D158 3
Ste p l am p
(driver side) D8 1
Ste p l am p
(passenger side) D29 1
Ste p l am p
(Rear LH) D66 1
Ste p l am p
(Rear RH) D46 1
Puddle lamp
(driver side) D3 2
Puddle lamp
(passenger side) D23 2
Vanity mirror lamp (driver side) R12 2
Vanity mirror la mp (passenger
side) R13 2
Foot lamp
(Rear LH) B479 65
Foot lamp
(Rear RH) B480 65
BCM
GroundContinuity
Connector Terminal
M70 56 Not existed
Revision: 2010 May2011 QX56

INL-58
< DTC/CIRCUIT DIAGNOSIS >
INTERIOR ROOM LAMP CONTROL CIRCUIT
INTERIOR ROOM LAMP CONTROL CIRCUIT
DescriptionINFOID:0000000006216068
Controls each interior room lamp (ground side) by PWM signal.
NOTE:
PWM signal control period is approximately 250 Hz (in the gradual brightening/dimming).
Component Function CheckINFOID:0000000006216069
CAUTION:
Before performing the diagnosis, check that the following are normal.
 Interior room lamp power supply
 Map lamp bulb
 Personal lamp bulb
 Foot lamp bulb
1.CHECK INTERIOR ROOM LAMP CONTROL FUNCTION
CONSULT-III ACTIVE TEST
1. Switch the map lamp switch and personal lamp switch to DOOR.
2. Turn ignition switch ON.
3. Select “INT LAMP” of BCM (INT LAMP) active test item.
4. With operating the test items, c heck that each interior room lamp turns ON/OFF (gradual brightening/dim-
ming).
Does the interior room lamp turns ON/OFF (gradual brightening/dimming)?
YES >> Interior room lamp control circuit is normal.
NO >> Refer to INL-58, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006216070
1.CHECK INTERIOR ROOM LAMP CONTROL OUTPUT
CONSULT-III ACTIVE TEST
1. Switch the map lamp switch and personal lamp switch to DOOR.
2. Turn ignition switch OFF.
3. Remove all the bulbs of map lamp, foot lamp and personal lamp.
4. Turn ignition switch ON.
5. Select “INT LAMP” of BCM (INT LAMP) active test item.
6. With operating the test item, check c ontinuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
Fixed ON>>GO TO 3.
Fixed OFF>>Replace BCM. Refer to BCS-81, "
Removal and Installation".
2.CHECK INTERIOR ROOM LAMP CONTROL OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector, map lamp connector, personal lamp connector and foot lamp connector.
3. Check continuity between BCM harness connector and foot lamp harness connector.
On : Interior room lamp gradual brightening
Off : Interior room lamp gradual dimming
BCM
Ground Test item Continuity
Connector Terminal
M70 63 INT LAMP On Existed
Off Not existed
Revision: 2010 May2011 QX56

INTERIOR ROOM LAMP CONTROL CIRCUITINL-59
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
INL
N
O P
4. Check continuity between BCM harness connector and map lamp harness connector.
5. Check continuity between personal lamp harness connector and map lamp harness connector.
Is the inspection result normal?
YES >> Replace map lamp, personal lamp or foot lamp.
NO >> Repair or replace harnesses.
3.CHECK INTERIOR ROOM LAMP CONTROL SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector, map lamp connector, personal lamp connector and foot lamp connector.
3. Check continuity between BCM harness connector and ground.
4. Check continuity between personal lamp harness connector and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
NO >> Repair or replace harnesses.
BCM Foot lamp Continuity
Connector Terminal Connector Terminal
M70 63 Driver side M89 2
Existed
Passenger side M90 1
Rear LH B479
66
Rear RH B480
BCM Map lamp Continuity
Connector Terminal Connector Terminal
M70 63 R18 7 Existed
Personal lamp Map lamp Continuity
Connector Terminal Connector Terminal
R212R185Existed
BCM GroundContinuity
Connector Terminal
M70 63 Not existed
Personal lamp GroundContinuity
Connector Terminal
R21 2 Not existed
Revision: 2010 May2011 QX56

INL-60
< DTC/CIRCUIT DIAGNOSIS >
LUGGAGE ROOM LAMP CIRCUIT
LUGGAGE ROOM LAMP CIRCUIT
DescriptionINFOID:0000000006216071
Controls the luggage room lamp and automatic back door close switch illumination (ground side) to turn the
luggage room lamp and automatic back door close switch illumination ON and OFF.
Diagnosis ProcedureINFOID:0000000006216072
CAUTION:
Before performing the diagnosis, check that the following are normal.
 Interior room lamp power supply
 Luggage room lamp bulb
1.CHECK LUGGAGE ROOM LAMP OUTPUT
1. Turn ignition switch OFF.
2. Remove the luggage room bulb.
3. Disconnect automatic back door close switch connector.
4. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
Fixed ON>>GO TO 3.
Fixed OFF>>Replace BCM. Refer to BCS-81, "
Removal and Installation".
2.CHECK LUGGAGE ROOM LAMP OPEN CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness c onnector and luggage room lamp harness connector.
3. Check continuity between BCM harness connector and automatic back door close switch harness con-
nector.
Is the inspection result normal?
YES >> Replace luggage room lamp or automatic back door close switch.
NO >> Repair or replace harnesses.
3.CHECK LUGGAGE ROOM LAMP SHORT CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
BCM
Ground Condition Continuity
Connector Terminal
M69 49 Back door Open Existed
Closed Not existed
BCM Luggage room lamp Continuity
Connector Terminal Connector Terminal
M69 49 B11 1 Existed
BCM Automatic back door close switch Continuity
Connector Terminal Connector Terminal
M69 49 D158 4 Existed
BCM GroundContinuity
Connector Terminal
M69 49 Not existed
Revision: 2010 May2011 QX56

INL-62
< DTC/CIRCUIT DIAGNOSIS >
STEP LAMP CIRCUIT
STEP LAMP CIRCUIT
DescriptionINFOID:0000000006216073
Controls the step lamp (ground side) to turn the step lamp ON and OFF.
Component Function CheckINFOID:0000000006216074
CAUTION:
Before performing the diagnosis, check that the following is normal.
 Interior room lamp power supply
 Step lamp bulb
1.CHECK STEP LAMP OPERATION
CONSULT-III ACTIVE TEST
1. Turn ignition switch ON.
2. Select “STEP LAMP TEST” of BCM (INT LAMP) active test item.
3. With operating the test items, c heck that step lamp turns ON/OFF.
Does the step lamp turn ON/OFF?
YES >> Step lamp circuit is normal.
NO >> Refer to INL-62, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006216075
1.CHECK STEP LAMP OUTPUT
CONSULT-III ACTIVE TEST
1. Turn ignition switch OFF.
2. Remove the step lamp bulbs (ALL).
3. Turn ignition switch ON.
4. Select “STEP LAMP TEST” of BCM (INT LAMP) active test item.
5. With operating the test item, check c ontinuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
Fixed ON>>GO TO 3.
Fixed OFF>>Replace BCM. Refer to BCS-81, "
Removal and Installation".
2.CHECK STEP LAMP OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector, and step lamp connector.
3. Check continuity between BCM harness connector and step lamp harness connector.
On : Step lamp ON
Off : Step lamp OFF
BCM
Ground Test item Continuity
Connector Terminal
M70 62 STEP LAMP TEST On Existed
Off Not existed
BCM Step lamp Continuity
Connector Terminal Connector Terminal
M70 62 Driver side D8
2 Existed
Passenger side D29
Rear LH D66
Rear RH D46
Revision: 2010 May2011 QX56

STEP LAMP CIRCUITINL-63
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
INL
N
O P
Is the inspection result normal?
YES >> Replace step lamp.
NO >> Repair or replace harnesses.
3.CHECK STEP LAMP SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> Repair or replace harnesses.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
BCM
GroundContinuity
Connector Terminal
M70 62 Not existed
Revision: 2010 May2011 QX56

INL-64
< DTC/CIRCUIT DIAGNOSIS >
PUDDLE LAMP CIRCUIT
PUDDLE LAMP CIRCUIT
DescriptionINFOID:0000000006216076
Controls the puddle lamp (ground side) to turn the puddle lamp ON and OFF.
Diagnosis ProcedureINFOID:0000000006216077
CAUTION:
Before performing the diagnosis, check that the following is normal.
 Interior room lamp power supply
1.CHECK PUDDLE LAMP OUTPUT
1. Turn ignition switch OFF.
2. Disconnect puddle lamp connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
Fixed ON>>GO TO 3.
Fixed OFF>>Replace BCM. Refer to BCS-81, "
Removal and Installation".
2.CHECK PUDDLE LAMP OPEN CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and puddle lamp harness connector.
Is the inspection result normal?
YES >> Replace puddle lamp.
NO >> Repair or replace harnesses.
3.CHECK PUDDLE LAMP SHORT CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
NO >> Repair or replace harnesses.
BCM
Ground Condition Continuity
Connector Terminal
M71 72 Any door
(except back door)Open Existed
Closed Not existed
BCM Puddle lamp Continuity
Connector Terminal Connector Terminal
M71 72 Driver side D3
14 Existed
Passenger side D23
BCM
GroundContinuity
Connector Terminal
M71 72 Not existed
Revision: 2010 May2011 QX56

PUSH-BUTTON IGNITION SWITCH ILLUMINATION CIRCUIT
INL-65
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
G H
I
J
K
M A
B
INL
N
O P
PUSH-BUTTON IGNITION SWIT CH ILLUMINATION CIRCUIT
Component Function CheckINFOID:0000000006265016
1.CHECK PUSH-BUTTON IGNITION SWITCH ILLUMINATION OPERATION
CONSULT-III ACTIVE TEST
1. Turn the ignition switch ON.
2. Select “ENGINE SW ILLUMI” of BCM (I NTELLIGENT KEY) active test item.
3. With operating the test items, check that the pus h-button ignition switch illumination turns ON/OFF.
Does the push-button ignition switch illumination turn ON/OFF?
YES >> Push-button ignition switch illumination circuit is normal.
NO >> Refer to INL-65, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006265017
1.CHECK PUSH-BUTTON IGNITION SWITCH ILLUMINATION POWER SUPPLY OUTPUT
1. Turn ignition switch OFF.
2. Lighting switch OFF.
3. Disconnect push-button ignition switch connector.
4. Check voltage between push-button ignition switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 2.
2.CHECK PUSH-BUTTON IGNITION SWITCH ILLU MINATION POWER SUPPLY OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM harness connector and the push-button ignition switch harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harnesses.
3.CHECK PUSH-BUTTON IGNITION SWITCH ILLU MINATION POWER SUPPLY SHORT CIRCUIT
Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
On : Push-button ignition
switch illumination ON
Off : Push-button ignition switch illumination OFF
(+)
(–) Condition Vo l ta g e
(Approx.)
Push-button ignition switch
Connector Terminal
M101 3 Ground Push-button ignition
switch illuminationON Condition 12 V
OFF Condition 0 V
BCM Push-button ignition switch Continuity
Connector Terminal Connector Terminal
M71 90 M101 3 Existed
BCM GroundContinuity
Connector Terminal
M71 90 Not existed
Revision: 2010 May2011 QX56

INL-66
< DTC/CIRCUIT DIAGNOSIS >
PUSH-BUTTON IGNITION SWITCH ILLUMINATION CIRCUIT
NO >> Repair or replace harnesses.
4.CHECK PUSH-BUTTON IGNITION SWITCH ILLUMINATION GROUND CIRCUIT-1
1. Connect push-button ignition switch connector.
2. Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
5.CHECK PUSH-BUTTON IGNITION SWIT CH ILLUMINATION GROUND CIRCUIT-2
1. Check continuity between push-button ignition switch harness connector and BCM harness connector.
2. Check continuity between push-button ignition switch harness connector and ground.
Is the inspection result normal?
YES >> Replace push-button ignition switch.
NO >> Repair or replace harnesses.
(+) (–) Condition Vo l ta g e
(Approx.)
BCM
Connector Terminal
M71 92 Ground Push-button ignition switch
illuminationON Condition 0 V
Push-button ignition switch BCM
Continuity
Connector Terminal Connector Terminal
M101 2 M71 92 Existed
Push-button ignition switch GroundContinuity
Connector Terminal
M101 2 Not existed
Revision: 2010 May2011 QX56

INT-26
< REMOVAL AND INSTALLATION >
FLOOR TRIM
10. Remove the following parts after removing the center console assembly. Remove ground bolt (G).
 Disconnect floor harness connectors (A) and (E).
 Disconnect yaw rate/side/decel G sensor harness connector (C). Refer to BRC-138, "
Exploded View".
 Disconnect diagnosis sensor unit harness connector (D). Refer to SR-26, "
Exploded View".
 Remove floor harness clamps (B) and (F).
11. Remove A/T shift selector assembly mounting bolts. Refer to TM-176, "
Removal and Installation".
12. Remove floor duct 1 (LH and RH). Refer to VTL-11, "
FLOOR DUCT 1 : Removal and Installation".
13. Disconnect drain hose (1) and remove instrument stay mounting nuts (A), and then remove instrument stay (2) (LH and RH).
14. Disengage front floor carpet from front floor carpet fixing clips (A).
JMJIA4226ZZ
JMJIA4225ZZ
JMJIA1560ZZ
Revision: 2010 May2011 QX56