2006 INFINITI M35 engine overheat

ENGINE COOLANT
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Revision: 2006 January2006 M35/M45
5. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to CO-42, "
FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-254,
"ASSEMBLY" .
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air relief plug (1) on heater hose.
4. Fill thermostat housing and reservoir tank to specified level.
Refill engine coolant up to filler neck of thermostat housing.
Pour engine coolant through engine coolant filler neck slowly of less than 2 (2-1/8 US qt, 1-3/4
Imp qt) a minute to allow air in system to escape.
Use Genuine Nissan Long Life Antifreeze/Coolant or equivalent mixed with water (distilled or
demineralized). Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
When engine coolant overflows air relief hole on heater hose,
install air relief plug.
5. Install radiator cap.
6. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000
rpm.
Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
7. Stop engine and cool down to less than approximately 50
C (122F).
Cool down using a fan to reduce the time.Radiator drain plug:
: 1.2 Nꞏm (0.12 kg-m, 11 in-lb)
: Engine front
PBIC3394E
Engine coolant capacity
(With reservoir tank at “MAX” level):
Approx. 10.4 (11 US qt, 9-1/8 Imp qt)
Reservoir tank engine coolant capacity
(At “MAX” level):
0.6 (5/8 US qt, 1/2 lmp qt)
Air relief plug:
: 1.2 Nꞏm (0.12 kg-m, 11 in-lb)
SMA412B

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Revision: 2006 January2006 M35/M45 DTC Confirmation Procedure ...............................451
Wiring Diagram ....................................................452
Diagnostic Procedure ...........................................453
Component Inspection .........................................457
DTC P0455 EVAP CONTROL SYSTEM ................458
On Board Diagnosis Logic ...................................458
DTC Confirmation Procedure ...............................459
Diagnostic Procedure ...........................................460
DTC P0456 EVAP CONTROL SYSTEM ................466
On Board Diagnosis Logic ...................................466
DTC Confirmation Procedure ...............................467
Overall Function Check ........................................468
Diagnostic Procedure ...........................................469
DTC P0460 FUEL LEVEL SENSOR ......................475
Component Description ........................................475
On Board Diagnosis Logic ...................................475
DTC Confirmation Procedure ...............................475
Diagnostic Procedure ...........................................476
Removal and Installation ......................................476
DTC P0461 FUEL LEVEL SENSOR ......................477
Component Description ........................................477
On Board Diagnosis Logic ...................................477
Overall Function Check ........................................477
Diagnostic Procedure ...........................................478
Removal and Installation ......................................478
DTC P0462, P0463 FUEL LEVEL SENSOR CIR-
CUIT ........................................................................479
Component Description ........................................479
On Board Diagnosis Logic ...................................479
DTC Confirmation Procedure ...............................479
Diagnostic Procedure ...........................................480
Removal and Installation ......................................480
DTC P0500 VSS .....................................................481
Description ...........................................................481
On Board Diagnosis Logic ...................................481
DTC Confirmation Procedure ...............................481
Overall Function Check ........................................482
Diagnostic Procedure ...........................................482
DTC P0506 ISC SYSTEM .......................................483
Description ...........................................................483
On Board Diagnosis Logic ...................................483
DTC Confirmation Procedure ...............................483
Diagnostic Procedure ...........................................484
DTC P0507 ISC SYSTEM .......................................485
Description ...........................................................485
On Board Diagnosis Logic ...................................485
DTC Confirmation Procedure ..............................
.485
Diagnostic Procedure ...........................................486
DTC P0550 PSP SENSOR .....................................487
Component Description ........................................487
CONSULT-II Reference Value in Data Monitor Mode
.487
On Board Diagnosis Logic ...................................487
DTC Confirmation Procedure ...............................487
Wiring Diagram ....................................................488
Diagnostic Procedure ...........................................489
Component Inspection .........................................491
Removal and Installation ......................................491DTC P0603 ECM POWER SUPPLY .......................492
Component Description ........................................492
On Board Diagnosis Logic ....................................492
DTC Confirmation Procedure ...............................492
Wiring Diagram .....................................................493
Diagnostic Procedure ...........................................494
DTC P0605 ECM .....................................................496
Component Description ........................................496
On Board Diagnosis Logic ....................................496
DTC Confirmation Procedure ...............................496
Diagnostic Procedure ...........................................497
DTC P0643 SENSOR POWER SUPPLY ................499
On Board Diagnosis Logic ....................................499
DTC Confirmation Procedure ...............................499
Wiring Diagram .....................................................500
Diagnostic Procedure ...........................................502
DTC P0850 PNP SWITCH ......................................504
Component Description ........................................504
CONSULT-II Reference Value in Data Monitor Mode
.504
On Board Diagnosis Logic ....................................504
DTC Confirmation Procedure ...............................504
Overall Function Check ........................................505
Wiring Diagram .....................................................506
Diagnostic Procedure ...........................................507
DTC P1148, P1168 CLOSED LOOP CONTROL ....509
On Board Diagnosis Logic ....................................509
DTC P1211 TCS CONTROL UNIT ..........................510
Description ............................................................510
On Board Diagnosis Logic ....................................510
DTC Confirmation Procedure ...............................510
Diagnostic Procedure ...........................................510
DTC P1212 TCS COMMUNICATION LINE ............511
Description ............................................................511
On Board Diagnosis Logic ....................................511
DTC Confirmation Procedure ...............................511
Diagnostic Procedure ...........................................511
DTC P1217 ENGINE OVER TEMPERATURE .......
.512
Description ............................................................512
CONSULT-II Reference Value in Data Monitor Mode
.513
On Board Diagnosis Logic ....................................513
Overall Function Check ........................................513
Wiring Diagram .....................................................515
Diagnostic Procedure ...........................................517
Main 12 Causes of Overheating ...........................522
Component Inspection ..........................................524
DTC P1220 FUEL PUMP CONTROL MODULE
(FPCM) ....................................................................525
Description ............................................................525
CONSULT-II Reference Value in Data Monitor Mode
.525
On Board Diagnosis Logic ....................................525
DTC Confirmation Procedure ...............................526
Wiring Diagram .....................................................527
Diagnostic Procedure ...........................................528
Component Inspection ..........................................532
DTC P1225 TP SENSOR ........................................533
Component Description ........................................533

EC-12Revision: 2006 January2006 M35/M45 Wiring Diagram ....................................................11 7 2
Diagnostic Procedure ..........................................11 7 3
Component Inspection .........................................11 7 7
DTC P0455 EVAP CONTROL SYSTEM ................117 8
On Board Diagnosis Logic ...................................11 7 8
DTC Confirmation Procedure ..............................11 7 9
Diagnostic Procedure ..........................................11 8 0
DTC P0456 EVAP CONTROL SYSTEM ................118 5
On Board Diagnosis Logic ...................................11 8 5
DTC Confirmation Procedure ..............................11 8 6
Overall Function Check .......................................11 8 7
Diagnostic Procedure ..........................................11 8 8
DTC P0460 FUEL LEVEL SENSOR ......................119 4
Component Description .......................................11 9 4
On Board Diagnosis Logic ...................................11 9 4
DTC Confirmation Procedure ..............................11 9 4
Diagnostic Procedure ..........................................11 9 5
Removal and Installation .....................................11 9 5
DTC P0461 FUEL LEVEL SENSOR ......................119 6
Component Description .......................................11 9 6
On Board Diagnosis Logic ...................................11 9 6
Overall Function Check .......................................11 9 6
Diagnostic Procedure ..........................................11 9 7
Removal and Installation .....................................11 9 7
DTC P0462, P0463 FUEL LEVEL SENSOR CIR-
CUIT .......................................................................119 8
Component Description .......................................11 9 8
On Board Diagnosis Logic ...................................11 9 8
DTC Confirmation Procedure ..............................11 9 8
Diagnostic Procedure ..........................................11 9 9
Removal and Installation .....................................11 9 9
DTC P0500 VSS .....................................................1200
Description ...........................................................1200
On Board Diagnosis Logic ...................................1200
DTC Confirmation Procedure ..............................1200
Overall Function Check .......................................1201
Diagnostic Procedure ..........................................1201
DTC P0506 ISC SYSTEM ......................................1202
Description ...........................................................1202
On Board Diagnosis Logic ...................................1202
DTC Confirmation Procedure ..............................1202
Diagnostic Procedure ..........................................1203
DTC P0507 ISC SYSTEM ......................................1204
Description ...........................................................1204
On Board Diagnosis Logic ...................................1204
DTC Confirmation Procedure ..............................1204
Diagnostic Procedure ..........................................1205
DTC P0550 PSP SENSOR .....................................
1206
Component Description .......................................1206
CONSULT-II Reference Value in Data Monitor Mode
1206
On Board Diagnosis Logic ...................................1206
DTC Confirmation Procedure ..............................1206
Wiring Diagram ....................................................1207
Diagnostic Procedure ..........................................1208
Component Inspection .........................................1210
Removal and Installation .....................................1210
DTC P0603 ECM POWER SUPPLY ......................1211
Component Description .......................................1211On Board Diagnosis Logic ...................................1211
DTC Confirmation Procedure ...............................1211
Wiring Diagram ....................................................1212
Diagnostic Procedure ........................................... 1213
DTC P0605 ECM ....................................................1215
Component Description .......................................1215
On Board Diagnosis Logic ...................................1215
DTC Confirmation Procedure ...............................1215
Diagnostic Procedure ........................................... 1216
DTC P0643 SENSOR POWER SUPPLY ...............1218
On Board Diagnosis Logic ...................................1218
DTC Confirmation Procedure ...............................1218
Wiring Diagram ....................................................1219
Diagnostic Procedure ........................................... 1221
DTC P0850 PNP SWITCH ......................................1223
Component Description .......................................1223
CONSULT-II Reference Value in Data Monitor Mode
1223
On Board Diagnosis Logic ...................................1223
DTC Confirmation Procedure ...............................1223
Overall Function Check ........................................1224
Wiring Diagram ....................................................1225
Diagnostic Procedure ........................................... 1226
DTC P1140, P1145 IVT CONTROL POSITION SEN-
SOR ........................................................................1228
Component Description .......................................1228
CONSULT-II Reference Value in Data Monitor Mode
1228
On Board Diagnosis Logic ...................................1228
DTC Confirmation Procedure ...............................1228
Wiring Diagram ....................................................1229
Diagnostic Procedure ........................................... 1232
Component Inspection .........................................1235
Removal and Installation ......................................1235
DTC P1148, P1168 CLOSED LOOP CONTROL ...1236
On Board Diagnosis Logic ...................................1236
DTC P1211 TCS CONTROL UNIT .........................1237
Description ...........................................................1237
On Board Diagnosis Logic ...................................1237
DTC Confirmation Procedure ...............................1237
Diagnostic Procedure ........................................... 1237
DTC P1212 TCS COMMUNICATION LINE ............1238
Description ...........................................................1238
On Board Diagnosis Logic ...................................1238
DTC Confirmation Procedure ...............................1238
Diagnostic Procedure ........................................... 1238
DTC P1217 ENGINE OVER TEMPERATURE .......1239
Description ...........................................................1239
CONSULT-II Reference Value in Data Monitor Mode
1240
On Board Diagnosis Logic ...................................1240
Overall Function Check ........................................1240
Wiring Diagram ....................................................1242
Diagnostic Procedure ........................................... 1244
Main 13 Causes of Overheating ..........................1249
Component Inspection .........................................1249
DTC P1220 FUEL PUMP CONTROL MODULE
(FPCM) ...................................................................1251
Description ...........................................................1251

TROUBLE DIAGNOSIS
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Revision: 2006 January2006 M35/M45
*: With ICC models2
P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater
P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater
P0075 P0081 Intake valve timing control solenoid valve
P0130 P0131 P0132 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1
P0137 P0138 P0139 P0157 P0158 P0159 Heated oxygen sensor 2
P0441 EVAP control system purge flow monitoring
P0443 P0444 P0445 EVAP canister purge volume control solenoid valve
P0447 P0448 EVAP canister vent control valve
P0451 P0452 P0453 EVAP control system pressure sensor
P0550 Power steering pressure sensor
P0603 ECM power supply
P0710 P0717 P0720 P0725 P0740 P0744 P0745 P1705 P1715 P1730 P1752 P1754 P1757 P1759 P1762 P1764
P1767 P1769 P1772 P1774 A/T related sensors, solenoid valves and switches
P1217 Engine over temperature (OVERHEAT)
P1220 Fuel pump control module
P1805 Brake switch
P2100 P2103 Throttle control motor relay
P2101 Electric throttle control function
P2118 Throttle control motor
3
P0011 P0021 Intake valve timing control
P0171 P0172 P0174 P0175 Fuel injection system function
P0300 - P0306 Misfire
P0420 P0430 Three way catalyst function
P0442 P0456 EVAP control system (SMALL LEAK, VERY SMALL LEAK)
P0455 EVAP control system (GROSS LEAK)
P0506 P0507 Idle speed control system
P1148 P1168 Closed loop control
P1211 TCS control unit
P1212 TCS communication line
P1564 ICC steering switch / ASCD steering switch
P1568 ICC command value*
P1572 ICC brake switch / ASCD brake switch
P1574 ICC vehicle speed sensor / ASCD vehicle speed sensor
P2119 Electric throttle control actuator Priority Detected items (DTC)

TROUBLE DIAGNOSIS
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Revision: 2006 January2006 M35/M45
Symptom Matrix ChartNBS004T1
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 1 1 2 3 2 2 2 3 2EC-685
Fuel pressure regulator system334444444 4EC-98
Fuel injector circuit 1 1 2 3 2 2 2 2EC-679
Evaporative emission system 334444444 4EC-39
Air Positive crankcase ventilation sys-
tem
334444444 41EC-51
Incorrect idle speed adjustment 1 1 1 1 1EC-77
Electric throttle control actuator 1 1 2 3 3 2 2 2 2 2 2EC-613,
EC-624
Ignition Incorrect ignition timing adjustment 3 3 1 1 1 1 1 1EC-77
Ignition circuit 11222 22 2EC-666
Main power supply and ground circuit22333 33 23EC-166
Mass air flow sensor circuit
1
122
222 2EC-205,
EC-214
Engine coolant temperature sensor circuit
333EC-226,
EC-238
Air fuel ratio (A/F) sensor 1 circuitEC-246
,
EC-256
,
EC-265
,
EC-274
,
EC-655
Throttle position sensor circuit
22EC-231
,
EC-354
,
EC-533
,
EC-535
,
EC-640
Accelerator pedal position sensor circuit 3 2 1EC-626
,
EC-633
,
EC-647
Knock sensor circuit 2 3EC-371
Crankshaft position sensor (POS) circuit 2 2EC-376
Camshaft position sensor (PHASE) circuit 3 2EC-383
Vehicle speed signal circuit 2 3 3 3EC-481
Power steering pressure sensor circuit 2 3 3EC-487

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Revision: 2006 January2006 M35/M45
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
ECM 22333333333EC-492,
EC-496
Intake valve timing control solenoid valve cir-
cuit32 13223 3EC-197
PNP switch circuit 3 3 3 3 3EC-504
Refrigerant pressure sensor circuit 2 3 3 4EC-692
Electrical load signal circuit 3EC-697
Air conditioner circuit 223333333 3 2AT C - 4 0
ABS actuator and electric unit (control unit) 4BRC-11
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank
5
5FL-10
Fuel piping 555 55 5EM-45
Vapor lock—
Valve deposit
5 555 55 5—
Poor fuel (Heavy weight gaso-
line, Low octane)—

TROUBLE DIAGNOSIS
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Revision: 2006 January2006 M35/M45
Air Air duct
55 5 55 5EM-17
Air cleanerEM-17
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)
5555EM-17
Electric throttle control actuatorEM-19
Air leakage from intake manifold/
Collector/GasketEM-24
Cranking Battery
111111
11SC-4
Generator circuitSC-23
Starter circuit 3SC-10
Signal plate 6EM-123
PNP switch 4AT- 11 3
Engine Cylinder head
55555 55 5EM-101
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-123
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Va l v e
mecha-
nismTiming chain
55555 55 5EM-64
CamshaftEM-84
Intake valve timing controlEM-64
Intake valve
3EM-84
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-26
, EX-
3Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler
55555 55 5EM-29
, LU-
18 , LU-10 ,
LU-14
Oil level (Low)/Filthy oilLU-7
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-112
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TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
1 - 6: The numbers refer to the order of inspection.Cooling
Radiator/Hose/Radiator filler cap
55555 55 45CO-14
,
CO-18
Thermostat 5CO-29
Water pumpCO-24
Water galleryCO-31
Cooling fan
5CO-22
Coolant level (Low)/Contami-
nated coolantCO-11
IVIS (INFINITI Vehicle Immobilizer System —
NATS)11EC-53 or
BL-248
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA