2011 INFINITI QX56 ESP

HOW TO SELECT PISTON AND BEARINGEM-127
< UNIT DISASSEMBLY AND ASSEMBLY >
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2. Apply crankshaft pin journal
diameter grade stamped on crank-
shaft front side to the column in the “CONNECTING ROD
BEARING SELECTION TABLE”.
3. Read the symbol at the cross point of select ed row and column in the “CONNECTING ROD BEARING
SELECTION TABLE”.
4. Apply the symbol obtained to the “CONNECTING ROD BEARING GRADE TABLE” to select connecting
rod bearing.
WHEN CONNECTING ROD AND CRANKSHAFT ARE REUSED
1. Measure connecting rod big end diameter and crankshaft pin journal diameter. Refer to EM-115, "Inspec-
tion".
2. Correspond the measured dimension in connecting rod big end diameter row of “CONNECTING ROD
BEARING SELECTION TABLE”.
3. Correspond the measured dimension in crankshaft pi n journal diameter column of “CONNECTING ROD
BEARING SELECTION TABLE”.
4. Follow from step 3 in “WHEN NEW CONNECTING ROD AND CRANKSHAFT ARE USED”.
CONNECTING ROD BEARING SELECTION TABLE
CONNECTING ROD BEARING GRADE TABLE
UNDERSIZE BEARING USAGE GUIDE
 When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod bearings, use undersize (US) bearings.
 When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing
installed, and grind crankshaft pin so that the c onnecting rod bearing oil clearance satisfies the standard.
CAUTION:
A : Pin diameter grade No. 1
B : Pin diameter grade No. 2
C : Pin diameter grade No. 3
D : Pin diameter grade No. 4
E : Journal diameter grade No. 1
F : Journal diameter grade No. 2
G : Journal diameter grade No. 3
H : Journal diameter grade No. 4
I : Journal diameter grade No. 5
JPBIA2283ZZ
JSBIA0535GB
Connecting rod bearing grade table : Refer to EM-142, "ConnectingRodBearing".
Revision: 2010 May2011 QX56

EM-128
< UNIT DISASSEMBLY AND ASSEMBLY >
HOW TO SELECT PISTON AND BEARING
In grinding crankshaft pin to use undersize bearings, keep the
fillet R (A) [1.5 - 1.7 mm (0.059 - 0.067 in)].
Main BearingINFOID:0000000006289588
WHEN NEW CYLINDER BLOCK AND CRANKSHAFT ARE USED
1. Apply the main bearing housing grade on the bottom face of thecylinder block to the row in “MAIN BEARING SELECTION
TA B L E ” .
2. “MAIN BEARING SELECTION TABLE” columns correspond to
journal diameter grade on front side of crankshaft.
3. Select main bearing grade at the point where selected row and column meet in “MAIN BEARING SELEC- TION TABLE”.
CAUTION:
 Initial clearance for No. 1, 5 journal and No. 2, 3, 4 journal is different. Use two different selection
table for each part.
 No. 1, 5 journal and No. 2, 3, 4 journal have the same signs but different measures. Never con-
fuse.
4. Apply sign at crossing in above step 3 to “MAIN BEARING GRADE TABLE”.
NOTE:
 “MAIN BEARING GRADE TABLE” applies to all journals.
 Service parts are available as a set of both upper and lower.
WHEN CYLINDER BLOCK AND CRANKSHAFT ARE REUSED
1. Measure cylinder block main bearing housing inner diameter and crankshaft main journal diameter. Refer to EM-115, "
Inspection".
JPBIA0216ZZ
Bearing undersize table : Refer to EM-142, "ConnectingRodBearing".
KBIA2495E
A : Pin diameter grade No. 1
B : Pin diameter grade No. 2
C : Pin diameter grade No. 3
D : Pin diameter grade No. 4
E : Journal diameter grade No. 1
F : Journal diameter grade No. 2
G : Journal diameter grade No. 3
H : Journal diameter grade No. 4
I : Journal diameter grade No. 5
JPBIA2283ZZ
Revision: 2010 May2011 QX56

HOW TO SELECT PISTON AND BEARINGEM-129
< UNIT DISASSEMBLY AND ASSEMBLY >
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2. Correspond the measured dimension in “Cylinder
block main bearing housing inner diameter” row of
“MAIN BEARING SELECTION TABLE”.
3. Correspond the measured dimension in “Crankshaft main journal diameter” column of “MAIN BEARING
SELECTION TABLE”.
4. Follow from step 3 in “When New Cylinder Block and Crankshaft are Used”.
MAIN BEARING SELECTION TABLE (No. 1 and 5 Journal)
JPBIA2285GB
Revision: 2010 May2011 QX56

PARKING LAMP CIRCUITEXL-97
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
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3. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
4. With operating the test items, check vo ltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace IPDM E/R.
5.CHECK PARKING LAMP OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connec tor and front combination lamp harness connector.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace harness.
6.CHECK PARKING LAMP GROUND OPEN CIRCUIT
Check continuity between front combination lamp harness connector and ground.
Is the inspection result normal?
YES >> Check corresponding bulb socket and harness. Repair or replace if necessary.
NO >> Repair or replace harness.
(+)
(− ) Test item Voltag e
(Approx.)
IPDM E/R
Connector Terminal
RH E1437
GroundEXTERNAL
LAMPS TAIL Battery voltage
Off 0 V
LH 43 TAIL Battery voltage
Off 0 V
IPDM E/R Front combination lamp
Continuity
Connector Terminal Connector Terminal
RH E1437 E119
7 Existed
LH 43 E118
Front combination lamp
GroundContinuity
Connector Terminal
RH E119 3Existed
LH E118
Revision: 2010 May2011 QX56

EXL-98
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
FRONT SIDE MARKER LAMP CIRCUIT
FRONT SIDE MARKER LAMP CIRCUIT
Component Function CheckINFOID:0000000006238400
1.CHECK PARKING LAMP OPERATION
Check that the parking lamp is turned ON.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to EXL-96, "
Component Function Check".
2.CHECK FRONT SIDE MARKER LAMP OPERATION
CONSULT-III ACTIVE TEST
1. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
2. With operating the lighting switch, check that the front side marker lamp is turned ON.
Is the inspection result normal?
YES >> Front side marker lamp circuit is normal.
NO >> Refer to EXL-98, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006238401
1.CHECK FRONT SIDE MARKER LAMP BULB
Check the applicable lamp bulb.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace bulb.
2.CHECK FRONT SIDE MARKER LAMP OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and front combination lamp connector.
3. Check continuity between IPDM E/R harness connec tor and front combination lamp harness connector.
Is the inspection result normal?
YES >> Check corresponding bulb socket and harness. Repair or replace if necessary.
NO >> Repair or replace harness. TAIL : Front side marker lamp ON
Off : Front side marker lamp OFF
IPDM E/R Front combination lamp
Continuity
Connector Terminal Connector Terminal
LH E1443 E118
4 Existed
RH 37 E119
Revision: 2010 May2011 QX56

TURN SIGNAL LAMP CIRCUITEXL-101
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
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Rear turn signal lamp
Is the inspection result normal?
YES >> Check corresponding bulb socket and harness. Repair or replace if necessary.
NO >> Repair or replace harness.
Rear combination lamp GroundContinuity
Connector Terminal
LH B60 4 Existed
RH B232
Revision: 2010 May2011 QX56

TAIL LAMP CIRCUITEXL-111
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
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Is the inspection result normal?
YES >> Tail lamp (back door side) circuit is normal.
NO >> Refer to E X L - 111 , "
BACK DOOR SIDE : Diagnosis Procedure".
BACK DOOR SIDE : Diagnosis ProcedureINFOID:0000000006238403
1.CHECK TAIL LAMP (BACK DOOR SIDE) BULB
Check the applicable lamp bulb.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace bulb.
2.CHECK TAIL LAMP (BACK DOOR SIDE) OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and tail lamp (back door side) connector.
3. Check continuity between IPDM E/R harness connec tor and tail lamp (back door side) harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK TAIL LAMP (BACK DOOR SIDE) GROUND OPEN CIRCUIT
Check continuity between tail lamp (back door side) harness connector and ground.
Is the inspection result normal?
YES >> Check corresponding bulb socket and harness. Repair or replace if necessary.
NO >> Repair or replace harness. TAIL : Tail lamp (back door side) ON
Off : Tail lamp (back door side) OFF
IPDM E/R Tail lamp (back door side)
Continuity
Connector Terminal Connector Terminal
LH E14 44 D169
1 Existed
RH D117
Tail lamp (back door side)
GroundContinuity
Connector Terminal
LH D169 2Existed
RH D117
Revision: 2010 May2011 QX56

EXL-112
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
LICENSE PLATE LAMP CIRCUIT
LICENSE PLATE LAMP CIRCUIT
Component Function CheckINFOID:0000000006213978
1.CHECK TAIL LAMP OPERATION
Check that the tail lamp is turned ON.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to EXL-109, "
BODY SIDE : Component Function Check".
2.CHECK LICENSE PLATE LAMP OPERATION
CONSULT-III ACTIVE TEST
1. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
2. With operating the lighting switch, check t hat the license plate lamp is turned ON.
Is the inspection result normal?
YES >> License plate lamp circuit is normal.
NO >> Refer to EXL-112, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006213979
1.CHECK LICENSE PLATE LAMP BULB
Check the applicable lamp bulb.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace bulb.
2.CHECK LICENSE PLATE LAMP OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and license plate lamp connector.
3. Check continuity between IPDM E/R harness connector and license plate lamp harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK LICENSE PLATE LAMP GROUND OPEN CIRCUIT
Check continuity between license plate lamp harness connector and ground.
Is the inspection result normal?
YES >> Check corresponding bulb socket and harness. Repair or replace if necessary.
NO >> Repair or replace harness. TAIL : License plate lamp ON
Off : License plate lamp OFF
IPDM E/R License plate lamp
Continuity
Connector Terminal Connector Terminal
LH E14 44 D167
1 Existed
RH D168
License plate lamp
GroundContinuity
Connector Terminal
LH D167 2 Existed
RH D168
Revision: 2010 May2011 QX56