NATS INFINITI FX35 2006 Owner's Guide

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION EC
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EC
Revision: 2006 December 2006 FX35/FX45
ENGINE CONTROL SYSTEM
VQ35DE
INDEX FOR DTC ................................................... ... 15
DTC No. Index .................................................... ... 15
Alphabetical Index ............................................... ... 19
PRECAUTIONS ..................................................... ... 23
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ... 23
On Board Diagnostic (OBD) System of Engine and
A/T ....................................................................... ... 23
Precaution ........................................................... ... 23
PREPARATION ...................................................... ... 27
Special Service Tools .......................................... ... 27
Commercial Service Tools ................................... ... 29
ENGINE CONTROL SYSTEM ............................... ... 30
System Diagram .................................................. ... 30
Multiport Fuel Injection (MFI) System ................. ... 31
Electronic Ignition (EI) System ............................ ... 33
Fuel Cut Control (at No Load and High Engine
Speed) ................................................................. ... 34
AIR CONDITIONING CUT CONTROL .................. ... 35
Input/Output Signal Chart .................................... ... 35
System Description ............................................. ... 35
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ... 36
System Description ............................................. ... 36
Component Description ....................................... ... 37
CAN COMMUNICATION ....................................... ... 38
System Description ............................................. ... 38
EVAPORATIVE EMISSION SYSTEM .................... ... 39
Description .......................................................... ... 39
Component Inspection ........................................ ... 42
Removal and Installation ..................................... ... 43
How to Detect Fuel Vapor Leakage .................... ... 43
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ................................................................... ... 46
System Description ............................................. ... 46
Diagnostic Procedure .......................................... ... 47
Component Inspection ........................................ ... 49 POSITIVE CRANKCASE VENTILATION ..............
... 51
Description ........................................................... ... 51
Component Inspection ......................................... ... 51
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... ... 53
Description ........................................................... ... 53
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......... ... 54
Introduction .......................................................... ... 54
Two Trip Detection Logic ..................................... ... 54
Emission-Related Diagnostic Information ............ ... 55
Malfunction Indicator Lamp (MIL) ........................ ... 68
OBD System Operation Chart ............................. ... 72
BASIC SERVICE PROCEDURE ............................ ... 77
Basic Inspection .................................................. ... 77
Idle Speed and Ignition Timing Check ................. ... 82
VIN Registration .................................................. ... 83
Accelerator Pedal Released Position Learning ... ... 84
Throttle Valve Closed Position Learning .............. ... 84
Idle Air Volume Learning ..................................... ... 84
Fuel Pressure Check ........................................... ... 86
TROUBLE DIAGNOSIS ......................................... ... 88
Trouble Diagnosis Introduction ............................ ... 88
DTC Inspection Priority Chart .............................. ... 94
Fail-Safe Chart .................................................... ... 96
Symptom Matrix Chart ......................................... ... 97
Engine Control Component Parts Location ......... .101
Vacuum Hose Drawing ........................................ .107
Circuit Diagram .................................................... .108
ECM Harness Connector Terminal Layout .......... .110
ECM Terminals and Reference Value .................. .110
CONSULT-II Function (ENGINE) ......................... .119
Generic Scan Tool (GST) Function ...................... .130
CONSULT-II Reference Value in Data Monitor .... .133
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... .136
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .138
Description ........................................................... .138
Testing Condition ................................................. .138
Inspection Procedure ........................................... .138
Diagnostic Procedure .......................................... .139

EC-8Revision: 2006 December 2006 FX35/FX45
PREPARATION ......................................................
.688
Special Service Tools .......................................... .688
Commercial Service Tools ................................... .689
ENGINE CONTROL SYSTEM ............................... .690
System Diagram .................................................. .690
Multiport Fuel Injection (MFI) System .................. .691
Electronic Ignition (EI) System ............................ .693
Fuel Cut Control (at No Load and High Engine
Speed) ................................................................. .694
AIR CONDITIONING CUT CONTROL ................... .695
Input/Output Signal Chart .................................... .695
System Description .............................................. .695
AUTOMATIC SPEED CONTROL DEVICE (ASCD) .696
System Description .............................................. .696
Component Description ....................................... .697
CAN COMMUNICATION ........................................ .698
System Description .............................................. .698
EVAPORATIVE EMISSION SYSTEM .................... .699
Description ........................................................... .699
Component Inspection ......................................... .702
Removal and Installation ..................................... .703
How to Detect Fuel Vapor Leakage ..................... .703
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ................................................................... .706
System Description .............................................. .706
Diagnostic Procedure .......................................... .707
Component Inspection ......................................... .709
POSITIVE CRANKCASE VENTILATION .............. .711
Description ........................................................... .711
Component Inspection ......................................... .711
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... .713
Description ........................................................... .713
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......... .714
Introduction .......................................................... .714
Two Trip Detection Logic ..................................... .714
Emission-related Diagnostic Information ............. .715
Malfunction Indicator Lamp (MIL) ........................ .729
OBD System Operation Chart ............................. .731
BASIC SERVICE PROCEDURE ............................ .737
Basic Inspection .................................................. .737
Idle Speed and Ignition Timing Check ................. .742
VIN Registration .................................................. .743
Accelerator Pedal Released Position Learning ... .743
Throttle Valve Closed Position Learning .............. .744
Idle Air Volume Learning ..................................... .744
Fuel Pressure Check ........................................... .746
TROUBLE DIAGNOSIS ......................................... .748
Trouble Diagnosis Introduction ............................ .748
DTC Inspection Priority Chart .............................. .754
Fail-Safe Chart .................................................... .756
Symptom Matrix Chart ......................................... .757
Engine Control Component Parts Location ......... .761
Vacuum Hose Drawing ........................................ .768
Circuit Diagram .................................................... .769
ECM Harness Connector Terminal Layout .......... .771
ECM Terminals and Reference Value .................. .771
CONSULT-II Function (ENGINE) ......................... .780
Generic Scan Tool (GST) Function ...................... .792 CONSULT-II Reference Value in Data Monitor ....
.795
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... .799
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .801
Description ........................................................... .801
Testing Condition ................................................. .801
Inspection Procedure ........................................... .801
Diagnostic Procedure ........................................... .802
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ...................................................................... .811
Description ........................................................... .811
Diagnostic Procedure ........................................... .811
POWER SUPPLY AND GROUND CIRCUIT .......... .812
Wiring Diagram .................................................... .812
Diagnostic Procedure ........................................... .813
Ground Inspection ................................................ .818
DTC U1000, U1001 CAN COMMUNICATION LINE .819
Description ........................................................... .819
On Board Diagnosis Logic ................................... .819
DTC Confirmation Procedure ............................... .819
Wiring Diagram .................................................... .820
Diagnostic Procedure ........................................... .821
DTC U1010 CAN COMMUNICATION .................... .822
Description ........................................................... .822
On Board Diagnosis Logic ................................... .822
DTC Confirmation Procedure ............................... .822
Diagnostic Procedure ........................................... .823
DTC P0011, P0021 IVT CONTROL ........................ .824
Description ........................................................... .824
CONSULT-II Reference Value in Data Monitor Mode .825
On Board Diagnosis Logic ................................... .825
DTC Confirmation Procedure ............................... .826
Wiring Diagram .................................................... .827
Diagnostic Procedure ........................................... .830
Component Inspection ......................................... .834
Removal and Installation ...................................... .835
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER .................................................................. .836
Description ........................................................... .836
CONSULT-II Reference Value in Data Monitor Mode .836
On Board Diagnosis Logic ................................... .836
DTC Confirmation Procedure ............................... .836
Wiring Diagram .................................................... .837
Diagnostic Procedure ........................................... .840
Component Inspection ......................................... .842
Removal and Installation ...................................... .842
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .843
Description ........................................................... .843
CONSULT-II Reference Value in Data Monitor Mode .843
On Board Diagnosis Logic ................................... .843
DTC Confirmation Procedure ............................... .844
Wiring Diagram .................................................... .845
Diagnostic Procedure ........................................... .848
Component Inspection ......................................... .850
Removal and Installation ...................................... .850
DTC P0075, P0081 IVT CONTROL SOLENOID

INDEX FOR DTC EC-17
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45P0456 0456 EVAP VERY SML LEAK EC-450
P0460 0460 FUEL LEV SEN SLOSHEC-460
P0461 0461 FUEL LEVEL SENSOREC-462
P0462 0462 FUEL LEVL SEN/CIRCEC-464
P0463 0463 FUEL LEVL SEN/CIRCEC-464
P0500 0500
VEH SPEED SEN/CIRC*5EC-466
P0506 0506 ISC SYSTEM EC-468
P0507 0507 ISC SYSTEMEC-470
P0550 0550 PW ST P SEN/CIRCEC-472
P0603 0603 ECM BACK UP/CIRCUITEC-477
P0605 0605 ECMEC-481
P0643 0643 SENSOR POWER/CIRCEC-484
P0700 0700 TCM AT- 111
P0705 0705 PNP SW/CIRCAT- 11 2
P0710 0710 ATF TEMP SEN/CIRCAT- 1 3 4
P0717 0717 TURBINE SENSOR AT- 11 6
P0720 0720
VEH SPD SEN/CIR AT*5AT- 11 8
P0740 0740 TCC SOLENOID/CIRC AT- 1 2 5
P0744 0744 A/T TCC S/V FNCTNAT- 1 2 7
P0745 0745 L/PRESS SOL/CIRCAT- 1 2 9
P0850 0850 P-N POS SW/CIRCUITEC-489
P1148 1148 CLOSED LOOP-B1EC-494
P1168 1168 CLOSED LOOP-B2EC-494
P1211 1211 TCS C/U FUNCTNEC-495
P1212 1212 TCS/CIRC EC-496
P1217 1217 ENG OVER TEMPEC-497
P1225 1225 CTP LEARNINGEC-510
P1226 1226 CTP LEARNINGEC-512
P1564 1564 ASCD SW EC-514 (Models with ICC),
EC-521
(Models with ASCD)
P1568 1568 ICC COMMAND VALUE*
6EC-528
P1572 1572 ASCD BRAKE SW EC-529 (Models with ICC),
EC-538
(Models with ASCD)
P1574 1574 ASCD VHL SPD SEN EC-546
(Models with ICC),
EC-548
(Models with ASCD)
P1610 - P1615 1610 - 1615 NATS MALFUNCTION EC-550
P1715 1715 IN PULY SPEEDEC-550
P1730 1730 A/T INTERLOCK AT- 1 4 1
P1752 1752 I/C SOLENOID/CIRCAT- 1 4 6
P1754 1754 I/C SOLENOID FNCTNAT- 1 4 8
P1757 1757 FR/B SOLENOID/CIRCAT- 1 5 0
P1759 1759 FR/B SOLENOID FNCTAT- 1 5 2
P1762 1762 D/C SOLENOID/CIRCAT- 1 5 4
DTC*1
Items
(CONSULT-II screen terms) Reference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC EC-21
[VQ35DE]
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EC
Revision: 2006 December 2006 FX35/FX45HO2S2 (B1) P0137 0137 EC-270
HO2S2 (B1) P0138 0138EC-281
HO2S2 (B1) P0139 0139EC-294
HO2S2 (B2) P0157 0157EC-270
HO2S2 (B2) P0158 0158EC-281
HO2S2 (B2) P0159 0159EC-294
HO2S2 HTR (B1) P0037 0037EC-173
HO2S2 HTR (B1) P0038 0038EC-173
HO2S2 HTR (B2) P0057 0057EC-173
HO2S2 HTR (B2) P0058 0058EC-173
I/C SOLENOID/CIRC P1752 1752 AT- 1 4 6
I/C SOLENOID FNCTN P1754 1754AT- 1 4 8
IAT SEN/CIRCUIT P0112 0112EC-205
IAT SEN/CIRCUIT P0113 0113EC-205
IAT SENSOR P0127 0127EC-225
ICC COMMAND VALUE*6P1568 1568EC-528
IN PULY SPEED P1715 1715 EC-550
INT/V TIM CONT-B1 P0011 0011EC-161
INT/V TIM CONT-B2 P0021 0021EC-161
INT/V TIM V/CIR-B1 P0075 0075EC-181
INT/V TIM V/CIR-B2 P0081 0081EC-181
ISC SYSTEM P0506 0506EC-468
ISC SYSTEM P0507 0507EC-470
KNOCK SEN/CIRC-B1 P0327 0327EC-356
KNOCK SEN/CIRC-B1 P0328 0328EC-356
L/PRESS SOL/CIRC P0745 0745 AT- 1 2 9
LC/B SOLENOID FNCT P1774 1774AT- 1 6 4
LC/B SOLENOID/CIRC P1772 1772AT- 1 6 2
MAF SEN/CIRCUIT P0101 0101EC-188
MAF SEN/CIRCUIT P0102 0102EC-197
MAF SEN/CIRCUIT P0103 0103EC-197
MULTI CYL MISFIRE P0300 0300EC-346
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EC-53
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED. P0000 0000 —
P-N POS SW/CIRCUIT P0850 0850 EC-489
PNP SW/CIRC P0705 0705 AT- 11 2
PURG VOLUME CONT/V P0443 0443EC-397
PURG VOLUME CONT/V P0444 0444EC-405
PURG VOLUME CONT/V P0445 0445EC-405
PW ST P SEN/CIRC P0550 0550EC-472
SENSOR POWER/CIRC P0643 0643EC-484
Items
(CONSULT-II screen terms) DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) EC-53
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)PFP:28591
DescriptionNBS003LJ

If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to BL-205, "
IVIS (INFINITI VEHICLE IMMOBILIZER
SYSTEM-NATS)" .

Confirm no self-diagnostic results of IVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.

When replacing ECM, initialization of IVIS (NATS) system
and registration of all IVIS (NATS) ignition key IDs must be
carried out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of IVIS (NATS)
initialization and all IVIS (NATS) ignition key ID registration, refer to CONSULT-II Operation Manual,
IVIS/NVIS.
SEF543X

ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-57
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45EVAP GROSS LEAK P0455 0455 — — 2 ×EC-442
EVAP VERY SML LEAK P0456 0456
× *4× 2 ×EC-450
FUEL LEV SEN SLOSH P0460 0460 — — 2 ×EC-460
FUEL LEVEL SENSOR P0461 0461 — — 2 ×EC-462
FUEL LEVL SEN/CIRC P0462 0462 — — 2 ×EC-464
FUEL LEVEL SEN/CIRC P0463 0463 — — 2 ×EC-464
VEH SPEED SEN/CIRC*6P0500 0500 — — 2 ×EC-466
ISC SYSTEM P0506 0506 — — 2 ×EC-468
ISC SYSTEM P0507 0507 — — 2 ×EC-470
PW ST P SEN/CIRC P0550 0550 — — 2 — EC-472
ECM BACK UP/CIRCUIT P0603 0603 — — 2×EC-477
ECM P0605 0605 — — 1 or 2 × or — EC-481
SENSOR POWER/CIRC P0643 0643 — — 1 ×EC-484
TCM P0700 0700 — — 1 ×AT- 111
PNP SW/CIRC P0705 0705 — — 2 ×AT- 11 2
ATF TEMP SEN/CIRC P0710 0710 — — 2 ×AT-134
TURBINE SENSOR P0717 0717 — — 2 ×AT- 11 6
VEH SPD SEN/CIR AT*6P0720 0720 — — 2 ×AT- 11 8
TCC SOLENOID/CIRC P0740 0740 — — 2 ×AT-125
A/T TCC S/V FNCTN P0744 0744 — — 2 ×AT-127
L/PRESS SOL/CIRC P0745 0745 — — 2 ×AT-129
P-N POS SW/CIRCUIT P0850 0850 — — 2 ×EC-489
CLOSED LOOP-B1 P1148 1148 — — 1 ×EC-494
CLOSED LOOP-B2 P1168 1168 — — 1 ×EC-494
TCS C/U FUNCTN P1211 1211 — — 2 — EC-495
TCS/CIRC P1212 1212 — — 2 —EC-496
ENG OVER TEMP P1217 1217 — — 1×EC-497
CTP LEARNING P1225 1225 — — 2 — EC-510
CTP LEARNING P1226 1226 — — 2 —EC-512
ASCD SW P1564 1564 — — 1 — EC-514,
EC-521
ICC COMMAND VALUE*7P1568 1568 — — 1 — EC-528
ASCD BRAKE SW P1572 1572 — — 1 — EC-529,
EC-538
ASCD VHL SPD SEN P1574 1574 — — 1 — EC-546,
EC-548
NATS MALFUNCTION P1610 -
P1615 1610 - 1615 — — 2 —
EC-53
IN PULLY SPEED P1715 1715 — — 2 — EC-550
A/T INTERLOCK P1730 1730 — — 1×AT-141
I/C SOLENOID/CIRC P1752 1752 — — 1 ×AT-146
I/C SOLENOID FNCTN P1754 1754 — — 1 ×AT-148
FR/B SOLENOID/CIRC P1757 1757 — — 1 ×AT-150
Items
(CONSULT-II screen terms) DTC*
1
SRT code
Test value/
Test limit
(GST only) Trip
Reference
page
CONSULT-II
GST*
2ECM*3

BASIC SERVICE PROCEDURE EC-79
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
6. PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-84, "
Idle Air Volume Learning" .
Is Idle Air Volume Learning carried out successfully?
Ye s o r N o
Ye s > > G O T O 7 .
No >> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
7. CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II. Refer to EC-82, "
IDLE SPEED" .
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed. Refer to EC-82, "
IDLE SPEED" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Check camshaft position sensor (PHASE) and circuit.
Refer to EC-368, "
DTC P0340, P0345 CMP SENSOR (PHASE)" .

Check crankshaft position sensor (POS) and circuit.
Refer to EC-361, "
DTC P0335 CKP SENSOR (POS)" .
OK or NG
OK >> GO TO 9.
NG >> 1. Repair or replace.
2. GO TO 4.
9. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to BL-205, "
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)" .
>> GO TO 4.
650
± 50 rpm (in P or N position)
650 ± 50 rpm (in P or N position)
SEF174Y

BASIC SERVICE PROCEDURE EC-81
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
15. CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light. Refer to EC-82, "
IGNITION TIMING" .
OK or NG
OK >> GO TO 19.
NG >> GO TO 16.
16. CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-64, "
TIMING CHAIN" .
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4.
17. DETECT MALFUNCTIONING PART
Check the following.

Check camshaft position sensor (PHASE) and circuit.
Refer to EC-368, "
DTC P0340, P0345 CMP SENSOR (PHASE)" .

Check crankshaft position sensor (POS) and circuit.
Refer to EC-361, "
DTC P0335 CKP SENSOR (POS)" .
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.
18. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to BL-205, "
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)" .
>> GO TO 4.
19. INSPECTION END
Did you replace the ECM, referring this Basic Inspection procedure?
Ye s o r N o
Ye s > > 1 . P e r f o r m EC-83, "VIN Registration" .
2. INSPECTION END
No >> INSPECTION END
15
± 5 ° BTDC (in P or N position)
PBIB1602E

EC-94
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
DTC Inspection Priority ChartNBS003LY
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:

If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-156, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010.
Refer to EC-159, "
DTC U1010 CAN COMMUNICATION" .
Priority Detected items (DTC)
1

U1000 U1001 CAN communication line

U1010 CAN communication

P0101 P0102 P0103 Mass air flow sensor

P0112 P0113 P0127 Intake air temperature sensor

P0117 P0118 P0125 Engine coolant temperature sensor

P0128 Thermostat function

P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor

P0181 P0182 P0183 Fuel tank temperature sensor

P0327 P0328 Knock sensor

P0335 Crankshaft position sensor (POS)

P0340 P0345 Camshaft position sensor (PHASE)

P0460 P0461 P0462 P0463 Fuel level sensor

P0500 Vehicle speed sensor

P0605 ECM

P0643 Sensor power supply

P0700 TCM

P0705 Park/Neutral position (PNP) switch

P0850 Park/Neutral position (PNP) switch

P1610 - P1615 NATS

P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor

EC-100
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
1 - 6: The numbers refer to the order of inspection. Va l v e
mecha-
nism Timing chain
55555 55 5 EM-64
Camshaft
EM-83
Intake valve timing controlEM-64
Intake valve
3 EM-101
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/ Gasket 55555 55 5 EM-26
,
EX-
3Three way catalyst
Lubrica-
tion Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler 55555 55 5 EM-30
,
LU-
17 , LU-10 ,
LU-14
Oil level (Low)/Filthy oil LU-7
Cooling
Radiator/Hose/Radiator filler cap
55555 55 45 CO-14,
CO-17
Thermostat 5 CO-27
Water pumpCO-22
Water galleryCO-29
Cooling fan 5EC-228
Coolant level (Low)/Contami-
nated coolant 5
CO-11
IVIS (Infiniti Vehicle Immobilizer System —
NATS) 11
EC-53 or
BL-205
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