2006 INFINITI M35 Sc-23

EM-184
[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2006 January2006 M35/M45
5. Drain engine coolant from radiator. Refer to CO-40, "Changing Engine Coolant" .
CAUTION:
Perform this step when engine is cold.
Do not spill engine coolant on drive belts.
6. Remove radiator. Refer to CO-43, "
RADIATOR" .
7. Remove drive belts. Refer to EM-174, "
DRIVE BELTS" .
8. Remove exhaust front tube with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
9. Remove air fuel ratio sensor 1 as follows:
a. Disconnect harness connector of each air fuel ratio sensor 1.
b. Remove air fuel ratio sensor 1 on both bank with heated oxygen
sensor wrench (SST).
CAUTION:
Be careful not to damage air fuel ratio sensor 1.
Discard any air fuel ratio sensor 1 which has been
dropped onto a hard surface such as a concrete floor;
replace with a new one.
10. Remove exhaust manifold and three way catalyst (left bank) as follows:
a. Disconnect A/C piping from A/C compressor, then remove A/C compressor with power tool. Refer to AT C -
151, "REFRIGERANT LINES" .
b. Remove steering lower joint to enable steering shaft to move freely. Refer to PS-13, "
STEERING COL-
UMN" .
c. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
d. Remove nuts on bottom of engine mounting insulator (LH), and lift up left side of engine approximately 3
cm (1.18 in) with transmission jack. Refer to EM-244, "
ENGINE ASSEMBLY" .
e. Remove exhaust manifold cover (left bank).
f. Loosen nuts in the reverse order of figure to remove exhaust
manifold and three way catalyst (left bank) with power tool.
NOTE:
Disregard No. 9 to No. 12 when loosening.
11. Remove exhaust manifold and three way catalyst (right bank) as follows:
a. Remove alternator and bracket. Refer to SC-23, "
CHARGING SYSTEM" .
PBIC2333E
A : Left bank
B : Right bank
: Engine front
PBIC3300E

ENGINE ASSEMBLY
EM-247
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Revision: 2006 January2006 M35/M45
Separation Work
1. Install engine slingers into front of cylinder head (left bank) and
rear of cylinder head (right bank).
2. Remove engine mounting insulators (RH and LH) under side nut with power tool.
3. Lift with hoist and separate engine and transmission assembly from front suspension member.
CAUTION:
Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
4. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
5. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
6. Separate engine from transmission assembly. Refer to AT-271, "
TRANSMISSION ASSEMBLY" .
7. Remove engine mounting insulators (RH and LH) and brackets (RH and LH) from engine with power tool.
8. Remove rear engine mounting member and engine mounting insulator (rear) from transmission.
INSTALLATION
Note the following, and install in the reverse order of removal.
Do not allow engine mounting insulator to be damage and careful no engine oil gets on it.
For a location with a positioning pin, insert it securely into hole of mating part.
For a part with a specified installation orientation, refer to component figure in EM-244, "Components" .
When installing engine mounting brackets (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).
NOTE:
Figure shows LH bank.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedure for checking fluids leak, lubricates leak and exhaust gases leak.
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.
Run engine to check for unusual noise and vibration.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.Slinger bolts:
:33.4 Nꞏm (3.4 kg-m, 25 ft-lb)
PBIC2447E
PBIC3305E

IDX-2
ALPHABETICAL INDEX
A
A/C air flow ...................................................... ATC-37
A/C component layout ..................................... ATC-25
A/C compressor mounting ........... ATC-155, ATC-158,
ATC-159
, ATC-160, ATC-162, ATC-164, ATC-165,
ATC-167
, ATC-168, ATC-169
A/C compressor precaution ............................. ATC-12
A/C compressor special service tool ................ ATC-16
A/C control operation (auto A/C) ...................... ATC-33
A/C diagnostic work flow (auto A/C) .............. ATC-111
A/C evaporator ............................................... ATC-168
A/C HFC134a (R134a) system precaution ........ ATC-6
A/C HFC134a (R134a) system service procedure .......
ATC-151
A/C HFC134a (R134a) system service tools ... ATC-17
A/C HFC134a system service equipment precaution ...
ATC-13
A/C lubricant (R134a) ...................................... ATC-26
A/C lubrication oil ........................................... ATC-174
A/C operational check ...................................... ATC-64
A/C self-diagnoses (auto A/C) ........ ATC-55, ATC-111
A/C service data specification ........................ ATC-174
A/C system description (auto A/C) ................... ATC-29
A/C trouble diagnoses (auto A/C) .................... ATC-40
A/C, A - Wiring diagram ................................... ATC-46
A/T fluid checking ...................... AT-13, AT-53, MA-29
A/T fluid cooler cleaning .................................... AT-14
A/T fluid replacement ............................. AT-12, MA-31
A/T fluid temperature sensor ........................... AT-135
A/T IND - Wiring diagram .................................... DI-57
A/T self-diagnoses ............................... AT-92, AT-103
A/T shift lock system ........................................ AT-229
A/T shift lock system - Wiring diagram ............ AT-230
A/T trouble diagnoses ........................................ AT-44
Accelerator control system ............................... ACC-3
Accelerator pedal position (APP) sensor ........ EC-626,
EC-633
, EC-647, EC-1358, EC-1365, EC-1379
Accelerator pedal released position learning .... EC-95,
EC-806
AF1B1-Wiring diagram ...... EC-249, EC-258, EC-267,
EC-277
, EC-657, EC-972, EC-981, EC-990, EC-1000,
EC-1389
AF1B2-Wiring diagram ...... EC-251, EC-260, EC-269,
EC-279
, EC-659, EC-974, EC-983, EC-992, EC-1002,
EC-1391
AF1HB1-Wiring diagram .................... EC-183, EC-905
AF1HB2-Wiring diagram .................... EC-185, EC-907
Air bag .............................................................. SRS-3
Air bag precautions ........................................... SRS-3
Air cleaner and air duct(VK45DE) ................... EM-177
Air cleaner and air duct(VQ35DE) .................... EM-17
Air cleaner filter replacement ............................ MA-25
Air cleaner filter replacement(VQ35DE) ........... MA-18
Air cleaner filter(VQ35DE) ................................ EM-18
Air conditioner cut control .................... EC-35, EC-745
Air flow meter - See Mass air flow sensor ...... EC-205,
EC-214
, EC-927, EC-936
Air fuel ratio sensor 1 ......... EC-246, EC-256, EC-265, EC-274
, EC-655, EC-969, EC-979, EC-988, EC-997,
EC-1387
Air fuel ratio sensor 1 heater ............. EC-182, EC-904
Air mix. door motor ......................... ATC-83, ATC-141
Alternator ........................................................... SC-23
Ambient sensor ............................. ATC-113, ATC-126
Angular tightening application ............................. EM-6
Angular tightening application(VK45DE) ........ EM-164
APPS1 - Wiring diagram ................. EC-628, EC-1360
APPS2 - Wiring diagram ................. EC-635, EC-1367
APPS3 - Wiring diagram ................. EC-649, EC-1381
ASC/BS - Wiring diagram ............... EC-587, EC-1313
ASC/SW - Wiring diagram .............. EC-570, EC-1296
ASCBOF - Wiring diagram .............. EC-708, EC-1450
ASCD .................................................. EC-36, EC-746
ASCD (automatic speed control device) ........... ACS-3
ASCIND - Wiring diagram ............... EC-715, EC-1457
AT indicator lamp ................................................ DI-56
Auto air conditioner - Wiring diagram ............. ATC-46
Auto amp ...................................................... ATC-125
Auto anti-dazzling inside mirror .......... GW-71, GW-72
Automatic amplifier ........... ATC-53, ATC-66, ATC-125
Automatic transmission fluid replacement ........ MA-32
AWD - Wiring diagram ....................................... TF-17
Axle ................................................................... MA-37
B
Back-up lamp ................................................... LT-246
Basic inspection .................................. EC-77, EC-788
Battery ................................................................. SC-4
Battery current sensor ....... EC-537, EC-543, EC-549,
EC-555
, EC-1263, EC-1269, EC-1275, EC-1281
Battery/Starting/Charging System Tester .......... SC-28
Battery/Starting/Charging System Tester(Battery) SC-7
Battery/Starting/Charging System Tester(Starting
system) .............................................................. SC-13
BCM (Body control module) .............................. BCS-3
Block heater(VK45DE) .................................... EM-249
Block heater(VQ35DE) ................................... EM-123
Blower motor ................................... ATC-89, ATC-132
Blower unit .................................................... ATC-130
Brake fluid level ................................................ MA-35
Brake hydraulic line ........................................... BR-12
Brake inspection ............................................... MA-36
Brake lines and cables inspection .................... MA-35
Brake pedal .......................................................... BR-6
Brake switch ................................... EC-598, EC-1329
BRK/SW - Wiring diagram .............. EC-600, EC-1331
Bulb specifications ........................................... LT-315
Bumper, front ...................................................... EI-11
Bumper, rear ....................................................... EI-14
C
Camshaft inspection(VK45DE) ....................... EM-216
Camshaft inspection(VQ35DE) ......................... EM-86
Camshaft position sensor (PHASE) EC-383, EC-1106
Camshaft(VK45DE) ........................................ EM-215

IDX-3
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IDX
ALPHABETICAL INDEX
Camshaft(VQ35DE) ........................................... EM-84
CAN .................................................................... DI-77
CAN - Wiring diagram ......... EC-174, EC-887, AT-106,
LAN-50
, LAN-91, LAN-132, LAN-179, LAN-226,
LAN-277
, LAN-323, LAN-369, LAN-419, LAN-469,
LAN-523
, LAN-566, LAN-609, LAN-658, LAN-707
CAN (Controller Area Network) ... SB-5, BL-26, BL-60,
BL-224
, GW-19, GW-75, GW-97, SE-16
CAN communication ........... EC-173, EC-176, EC-748,
EC-886
, EC-889, AT-32, AT-105, TF-13, TF-32, WT-12,
SB-5
, BL-26, BL-60, BL-224, GW-19, GW-75, GW-97,
SE-16
, WW-11
Canister-See EVAP canister ............... EC-42, EC-752
Center bearing assembly (propeller shaft) ........ PR-12
Center bearing disassembly (propeller shaft) .... PR-11
CHARGE - Wiring diagram ................................ SC-25
Charging system ................................................ SC-23
Chassis and body maintenance ........................ MA-29
CHIME - Wiring diagram ..................................... DI-64
CIGAR - Wiring diagram .................................. WW-49
Cigarette lighter ............................................... WW-49
Circuit breaker ................................................... PG-17
Clock ................................................................. DI-108
CLOCK - Wiring diagram .................................. DI-108
Closed loop control .............................. EC-32, EC-742
Closed loop control (Bank 1) ........... EC-509, EC-1236
Closed loop control (Bank 2) ........... EC-509, EC-1236
Collision diagnosis ........................................... SRS-50
Combination lamp, front, removal and installation ........
LT-76
Combination lamp, rear, removal and installation ........
LT-266
Combination meter ............................................... DI-5
COMPAS - Wiring diagram ............................... DI-106
Compass .......................................................... DI-105
Component Location (auto A/C) ...................... ATC-42
Compression pressure(VK45DE) .................... EM-233
Compression pressure(VQ35DE) .................... EM-101
Compressor special service tool ...................... ATC-16
Condenser ..................................................... ATC-165
Connecting rod bearing clearance(VK45DE) .. EM-273
Connecting rod bushing clearance .................. EM-142
Connecting rod bushing clearance(VK45DE) .. EM-268
Connecting rod(VK45DE) ................................ EM-268
Connecting rod(VQ35DE) ................................ EM-140
CONSULT-II Reference value (A/T) .................. AT-90
Control units (terminal arrangement) ............... PG-104
Control valve (A/T) ............................................. AT-38
Controller Area Network (CAN) ... SB-5, BL-26, BL-60,
BL-224
, GW-19, GW-75, GW-97, SE-16
Converter housing installation ............ AT-274, AT-277
COOL/F - Wiring diagram ................ EC-515, EC-1242
Coolant replacement(VQ35DE) ......................... MA-15
Cooling circuit (engine)(VK45DE) ...................... CO-38
Cooling circuit (engine)(VQ35DE) ....................... CO-9
Cooling fan motor ............ EC-524, EC-1249, EC-1250
Cooling fan(VK45DE) ........................................ CO-51
Cooling fan(VQ35DE) ........................................ CO-22
Cowl top ............................................................... EI-18
Cowl top cover .................................................... EI-18
Crankcase ventilation system - See Positive crankcase
ventilation ............................................. EC-51
, EC-761
Crankshaft position sensor (POS) ... EC-376, EC-1099
Crankshaft(VK45DE) ...................................... EM-250
Crankshaft(VQ35DE) ...................................... EM-140
Crash zone sensor .......................................... SRS-45
CUR/SE - Wiring diagram .. EC-539, EC-545, EC-551,
EC-557
, EC-1265, EC-1271, EC-1277, EC-1283
Cylinder block boring(VK45DE) ...................... EM-271
Cylinder block(VK45DE) ................................. EM-249
Cylinder block(VQ35DE) ................................. EM-123
Cylinder head bolt tightening(VK45DE) .......... EM-235
Cylinder head bolt tightening(VQ35DE) .......... EM-104
Cylinder head(VK45DE) ................................. EM-233
Cylinder head(VQ35DE) ................................. EM-101
D
D/LOCK - Wiring diagram .................................. BL-28
Daytime light system ........................................... LT-79
Daytime running light - See Daytime light system LT-79
DEF - Wiring diagram ............................ SB-7, SE-118
Diagnosis sensor unit ..................................... SRS-48
Diagnostic trouble code (DTC) for OBD system EC-16,
EC-58
, EC-726, EC-769
Direct clutch solenoid valve ............... AT-155, AT-157
Display and amp.assembly ............... ATC-53, ATC-66
Door glass ........................................... GW-63, GW-67
Door glass Fitting Adjustment(Front) ................ GW-66
Door glass Fitting Adjustment(Rear) ................. GW-70
Door lock .......................................................... BL-196
Door mirror ...................................................... GW-120
Door trim ............................................................. EI-34
Door, front ........................................... BL-190, GW-63
Door, rear ............................................ BL-190, GW-67
Drive belt inspection ......................................... MA-22
Drive belt inspection(VQ35DE) ......................... MA-14
Drive belt(VK45DE) ........................................ EM-174
Drive belt(VQ35DE) .......................................... EM-15
Drive shaft ......................................................... MA-38
Drive shaft (rear) ............................................... RAX-8
Driver air bag .................................................. SRS-38
DTRL - Wiring diagram ....................................... LT-84
Duct and grilles .............................................. ATC-144
E
ECM power supply EC-166
, EC-492, EC-879, EC-1211
ECM/PW - Wiring diagram ............... EC-493, EC-1212
ECTS - Wiring diagram ...................... EC-228, EC-950
Electric sunroof .................................................. RF-10
Electric throttle control actuator ........ EC-613, EC-624,
EC-1344
, EC-1356
Electric throttle control actuator (VK45DE) ..... EM-179
Electric throttle control actuator (VQ35DE) ....... EM-19
Electrical load signal circuit .............. EC-697, EC-1439
Electrical unit ................................................... PG-104
Electrical units location ...................................... PG-96

IDX-4
ALPHABETICAL INDEX
Electronic ignition (EI) system ............. EC-33, EC-743
Engine control module (ECM) .......... EC-496, EC-1215
Engine control system diagram ........... EC-30, EC-740
Engine coolant temperature sensor (ECTS) ... EC-226,
EC-238
, EC-948, EC-961
Engine coolant(VK45DE) .................................. CO-40
Engine coolant(VQ35DE) ................................. CO-11
Engine oil filter replacement ............................. MA-26
Engine oil filter replacement(VQ35DE) ............. MA-19
Engine oil precautions .......................................... GI-8
Engine oil replacement(VQ35DE) ..................... MA-18
Engine oil(VK45DE) ........................................... LU-26
Engine oil(VQ35DE) ............................................ LU-7
Engine removal(VK45DE) ............................... EM-244
Engine removal(VQ35DE) .............................. EM-113
Engine room cover ............................................ EM-14
Engine room cover(VK45DE) ......................... EM-173
ETC1 - Wiring diagram .................... EC-614, EC-1345
ETC2 - Wiring diagram .................... EC-609, EC-1340
ETC3 - Wiring diagram .................... EC-620, EC-1352
EVAP canister ...................................... EC-42, EC-752
EVAP canister purge volume control solenoid valve ....
EC-412
, EC-420, EC-1132, EC-1140
EVAP canister vent control valve ...... EC-427, EC-434,
EC-1147
, EC-1154
EVAP control system (small leak) diagnosis .. EC-403,
EC-466
, EC-1124, EC-1185
EVAP control system pressure sensor ........... EC-440,
EC-443
, EC-450, EC-1160, EC-1163, EC-1170
EVAP control system purge flow monitoring diagnosis
EC-398
, EC-1119
EVAP vapor lines inspection ................. MA-21, MA-28
Evaporative emission (EVAP) system . EC-39, EC-749
Evaporator ..................................................... ATC-168
Exhaust manifold(VK45DE) ............................ EM-183
Exhaust system ................................................... EX-3
Exhaust system inspection ..................... EX-3, MA-29
Expansion valve ............................................. ATC-169
F
F/FOG - Wiring diagram ................................... LT-197
F/PUMP - Wiring diagram ................ EC-686, EC-1428
Final drive pre-inspection .................. FFD-16, RFD-19
Final drive removal and installation .. FFD-13, RFD-16
Floor trim ............................................................. EI-50
Flow charts ......................................................... GI-28
Fluid temperature sensor (A/T) ........................ AT-135
Fluorescent leak detector .............................. ATC-170
FPCM - Wiring diagram ................... EC-527, EC-1253
Freeze frame data ............................... EC-59, EC-770
Front brake solenoid valve ................. AT-151, AT-153
Front bumper ...................................................... EI-11
Front combination lamp removal and installation LT-76
Front door ............................. BL-190, BL-196, GW-63
Front passenger air bag .................................. SRS-42
Front seat belt .................................................... SB-30
Front seat belt pre-tensioner ..... SB-2, SRS-3, SRS-47
Front washer ...................................................... WW-4
Front wiper ......................................................... WW-4
FTS - Wiring diagram ....................................... AT-136
FTTS - Wiring diagram .... EC-345, EC-350, EC-1068,
EC-1073
Fuel cut control (at no load high engine speed) EC-34,
EC-744
Fuel filter replacement ......................................... FL-4
Fuel gauge ............................................................ DI-5
Fuel injection system (Bank 1) ......... EC-321, EC-332,
EC-1044
, EC-1055
Fuel injection system (Bank 2) ......... EC-321, EC-332,
EC-1044
, EC-1055
Fuel injector ................................................... EC-1420
Fuel injector and fuel tube(VK45DE) .............. EM-193
Fuel injector and fuel tube(VQ35DE) ................ EM-45
Fuel level sensor EC-475, EC-477, EC-479, EC-1194,
EC-1196
, EC-1198
Fuel line inspection .................................. FL-3, MA-25
Fuel line inspection(VQ35DE) .......................... MA-18
Fuel precautions ................................................... GI-6
Fuel pressure check ........................... EC-98, EC-809
Fuel pressure release ......................... EC-98, EC-809
Fuel pump ....................................... EC-685, EC-1427
Fuel pump and gauge .......................................... FL-4
Fuel pump control module .............. EC-525, EC-1251
Fuel pump dropping resistor ........... EC-525, EC-1251
Fuel system ......................................................... FL-3
Fuel tank ............................................................ FL-10
Fuel tank temperature sensor .......... EC-343, EC-349,
EC-1066
, EC-1072
Fuel tank vacuum relief valve ............. EC-42, EC-752
FUELB1 - Wiring diagram EC-323, EC-334, EC-1046,
EC-1057
FUELB2 - Wiring diagram EC-325, EC-336, EC-1048,
EC-1059
Fuse .................................................................. PG-17
Fuse and fusible link box ................................ PG-112
Fusible link ........................................................ PG-17
G
Gauges ................................................................. DI-5
Generator ........................................................... SC-23
Generator - See Alternator ................................ SC-23
Glass ........................ GW-11, GW-61, GW-63, GW-67
Grille - See Exterior ............................................ EI-16
Ground distribution ........................................... PG-46
H
H/LAMP - Wiring diagram ....................... LT-13
, LT-48
Harness connector .......................................... PG-102
Harness layout .................................................. PG-63
Hazard warning lamp ....................................... LT-211
Headlamp removal and installation .................... LT-76
Headlining - See Roof trim .................................. EI-52
Heated oxygen sensor 2 (bank 1) .... EC-286, EC-297,
EC-310
, EC-1009, EC-1020, EC-1033
Heated oxygen sensor 2 (bank 2) .... EC-286, EC-297,

CHARGING SYSTEM
SC-23
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Revision: 2006 January2006 M35/M45
CHARGING SYSTEM PFP:00011
System Description NKS003NN
DESCRIPTION
The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.
The voltage output is controlled by the IC regulator.
Power is supplied at all times
through 10A fuse [No. 36, located in the fuse, fusible link and relay block (J/B)]
to alternator terminal 4 (“S” terminal).
“B” terminal supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is
controlled by the IC regulator at terminal 4 (“S” terminal) detecting the input voltage.
The alternator is grounded to the engine block.
With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 14, located in the fuse block (J/B)]
to combination meter terminal 12 for the charge warning lamp.
Ground is supplied at signal
to combination meter terminal 22
through alternator terminal 3 (“L” terminal).
Then power and ground are supplied, the charge warning lamp will illuminate.
When the alternator is providing sufficient voltage with the engine running, the ground is opened and the
charge warning lamp will go off.
If the charge warning lamp illuminates with the engine running, a malfunction is indicated.
Ground is supplied
to alternator terminal 2 (“E” terminal)
through grounds E222, E223 and E224. (VQ35DE)
through ground E212. (VK45DE)
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate the charge warning lamp, if any of the following symp-
toms occur while alternator is operating:
Excessive voltage is produced.
No voltage is produced.