knock sensor INFINITI FX35 2006 Service Manual

EC-16
[VQ35DE]
INDEX FOR DTC
Revision: 2006 December 2006 FX35/FX45
P0139 0139 HO2S2 (B1) EC-294
P0150 0150 A/F SENSOR1 (B2)EC-230
P0151 0151 A/F SENSOR1 (B2)EC-240
P0152 0152 A/F SENSOR1 (B2)EC-249
P0153 0153 A/F SENSOR1 (B2)EC-258
P0157 0157 HO2S2 (B2)EC-270
P0158 0158 HO2S2 (B2)EC-281
P0159 0159 HO2S2 (B2)EC-294
P0171 0171 FUEL SYS-LEAN-B1EC-305
P0172 0172 FUEL SYS-RICH-B1EC-317
P0174 0174 FUEL SYS-LEAN-B2EC-305
P0175 0175 FUEL SYS-RICH-B2EC-317
P0181 0181 FTT SENSOREC-328
P0182 0182 FTT SEN/CIRCUITEC-334
P0183 0183 FTT SEN/CIRCUITEC-334
P0222 0222 TP SEN 1/CIRCEC-339
P0223 0223 TP SEN 1/CIRCEC-339
P0300 0300 MULTI CYL MISFIREEC-346
P0301 0301 CYL 1 MISFIREEC-346
P0302 0302 CYL 2 MISFIREEC-346
P0303 0303 CYL 3 MISFIREEC-346
P0304 0304 CYL 4 MISFIREEC-346
P0305 0305 CYL 5 MISFIREEC-346
P0306 0306 CYL 6 MISFIREEC-346
P0327 0327 KNOCK SEN/CIRC-B1EC-356
P0328 0328 KNOCK SEN/CIRC-B1EC-356
P0335 0335 CKP SEN/CIRCUITEC-361
P0340 0340 CMP SEN/CIRC-B1EC-368
P0345 0345 CMP SEN/CIRC-B2EC-368
P0420 0420 TW CATALYST SYS-B1EC-377
P0430 0430 TW CATALYST SYS-B2EC-377
P0441 0441 EVAP PURG FLOW/MONEC-383
P0442 0442 EVAP SMALL LEAKEC-388
P0443 0443 PURG VOLUME CONT/VEC-397
P0444 0444 PURG VOLUME CONT/VEC-405
P0445 0445 PURG VOLUME CONT/VEC-405
P0447 0447 VENT CONTROL VALVEEC-412
P0448 0448 VENT CONTROL VALVEEC-419
P0451 0451 EVAP SYS PRES SENEC-425
P0452 0452 EVAP SYS PRES SENEC-428
P0453 0453 EVAP SYS PRES SENEC-434
P0455 0455 EVAP GROSS LEAKEC-442
DTC*1
Items
(CONSULT-II screen terms) Reference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC EC-21
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
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

ENGINE CONTROL SYSTEM EC-31
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Multiport Fuel Injection (MFI) SystemNBS003L2
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal conditions.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air
flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.


During warm-up

When starting the engine

During acceleration

Hot-engine operation

When selector lever is changed from N to D

High-load, high-speed operation


During deceleration

During high engine speed operation
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed*
3
Piston position
Fuel injection
& mixture ratio
control Fuel injector
Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Knock sensor Engine knocking condition
Battery Battery voltage*
3
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
Air conditioner switch Air conditioner operation*
2
Wheel sensorVehicle speed*2

ENGINE CONTROL SYSTEM EC-33
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
FUEL INJECTION TIMING
Two types of systems are used.
Sequential Multiport Fuel Injection System
Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used
when the engine is running.
Simultaneous Multiport Fuel Injection System
Fuel is injected simultaneously into all six cylinders twice each engine cycle. In other words, pulse signals of
the same width are simultaneously transmitted from the ECM.
The six fuel injectors will then receive the signals two times for each engine cycle.
This system is used when the engine is being started and/or if the fail-safe system (CPU) is operating.
FUEL SHUT-OFF
Fuel to each cylinder is cut off during deceleration, operation of the engine at excessively high speeds or oper-
ation of the vehicle at excessively high speeds.
Electronic Ignition (EI) SystemNBS003L3
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
Firing order: 1 - 2 - 3 - 4 - 5 - 6
The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the
engine. The ignition timing data is stored in the ECM.
The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) sig-
nal. Computing this information, ignition signals are transmitted to the power transistor.
During the following conditions, the ignition timing is revised by the ECM according to the other data stored in
the ECM.

At starting

During warm-up

At idle

At low battery voltage
SEF179U
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed*
2
Piston position
Ignition timing
control Power transistor
Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Battery Battery voltage*
2
Wheel sensorVehicle speed*1

EC-34
[VQ35DE]
ENGINE CONTROL SYSTEM
Revision: 2006 December 2006 FX35/FX45

During acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Fuel Cut Control (at No Load and High Engine Speed)NBS003L4
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
If the engine speed is above 1,800 rpm under no load (for example, the shift position is neutral and engine
speed is over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies
based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,500 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under EC-31, "
Multiport Fuel Injection (MFI) System" .
Sensor Input Signal to ECM ECM function Actuator
Park/neutral position (PNP) switch Neutral position
Fuel cut con-
trol Fuel injector
Accelerator pedal position sensor Accelerator pedal position
Engine coolant temperature sensor Engine coolant temperature
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed
Wheel sensor Vehicle speed*

EC-56
[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 December 2006 FX35/FX45
HO2S2 (B1) P0138 0138 ××2×EC-281
HO2S2 (B1) P0139 0139 ××2×EC-294
A/F SENSOR1 (B2) P0150 0150 — ×2 ×EC-230
A/F SENSOR1 (B2) P0151 0151 — ×2 ×EC-240
A/F SENSOR1 (B2) P0152 0152 — ×2 ×EC-249
A/F SENSOR1 (B2) P0153 0153 ××2×EC-258
HO2S2 (B2) P0157 0157 ××2×EC-270
HO2S2 (B2) P0158 0158 ××2×EC-281
HO2S2 (B2) P0159 0159 ××2×EC-294
FUEL SYS-LEAN-B1 P0171 0171 — — 2 ×EC-305
FUEL SYS-RICH-B1 P0172 0172 — — 2 ×EC-317
FUEL SYS-LEAN-B2 P0174 0174 — — 2 ×EC-305
FUEL SYS-RICH-B2 P0175 0175 — — 2 ×EC-317
FTT SENSOR P0181 0181 — — 2 ×EC-328
FTT SEN/CIRCUIT P0182 0182 — — 2 ×EC-334
FTT SEN/CIRCUIT P0183 0183 — — 2 ×EC-334
TP SEN 1/CIRC P0222 0222 — — 1 ×EC-339
TP SEN 1/CIRC P0223 0223 — — 1 ×EC-339
MULTI CYL MISFIRE P0300 0300 — — 2 ×EC-346
CYL 1 MISFIRE P0301 0301 — — 2 ×EC-346
CYL 2 MISFIRE P0302 0302 — — 2 ×EC-346
CYL 3 MISFIRE P0303 0303 — — 2 ×EC-346
CYL 4 MISFIRE P0304 0304 — — 2 ×EC-346
CYL 5 MISFIRE P0305 0305 — — 2 ×EC-346
CYL 6 MISFIRE P0306 0306 — — 2 ×EC-346
KNOCK SEN/CIRC-B1 P0327 0327 — — 2 — EC-356
KNOCK SEN/CIRC-B1 P0328 0328 — — 2 —EC-356
CKP SEN/CIRCUIT P0335 0335 — — 2×EC-361
CMP SEN/CIRC-B1 P0340 0340 — — 2 ×EC-368
CMP SEN/CIRC-B2 P0345 0345 — — 2 ×EC-368
TW CATALYST SYS-B1 P0420 0420 ××2×EC-377
TW CATALYST SYS-B2 P0430 0430 ××2×EC-377
EVAP PURG FLOW/MON P0441 0441 ××2×EC-383
EVAP SMALL LEAK P0442 0442 ××2×EC-388
PURG VOLUME CONT/V P0443 0443 — — 2 ×EC-397
PURG VOLUME CONT/V P0444 0444 — — 2 ×EC-405
PURG VOLUME CONT/V P0445 0445 — — 2 ×EC-405
VENT CONTROL VALVE P0447 0447 — — 2 ×EC-412
VENT CONTROL VALVE P0448 0448 — — 2 ×EC-419
EVAP SYS PRES SEN P0451 0451 — — 2 ×EC-425
EVAP SYS PRES SEN P0452 0452 — — 2 ×EC-428
EVAP SYS PRES SEN P0453 0453 — — 2 ×EC-434
Items
(CONSULT-II screen terms) DTC*
1
SRT code
Test value/
Test limit
(GST only) Trip
Reference
page
CONSULT-II
GST*
2ECM*3

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

TROUBLE DIAGNOSIS EC-97
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Symptom Matrix ChartNBS003M0
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 11232 22 3 2 EC-635
Fuel pressure regulator system334444444 4 EC-86
Fuel injector circuit 11232 22 2 EC-628
Evaporative emission system334444444 4 EC-39
Air Positive crankcase ventilation sys-
tem 33 4444444 41
EC-51
Incorrect idle speed adjustment 1 1 1 1 1 EC-77
Electric throttle control actuator 112332222 2 2 EC-562,
EC-573
IgnitionIncorrect ignition timing adjustment33111 11 1 EC-77
Ignition circuit 11222 22 2EC-649
Power supply and ground circuit22333 33 23 EC-149
Mass air flow sensor circuit
1
12 2
222 2 EC-188,
EC-197
Engine coolant temperature sensor circuit
3 33
EC-210,
EC-222
Air fuel ratio (A/F) sensor EC-240
EC-240
EC-249
EC-258
EC-604
Throttle position sensor circuit
22 EC-215
,
EC-339
,
EC-510
,
EC-512
,
EC-589
Accelerator pedal position sensor circuit 3 2 1 EC-484
,
EC-575
,
EC-582
,
EC-596
Knock sensor circuit 2 3 EC-356
Crankshaft position sensor (POS) circuit 2 2EC-361
Camshaft position sensor (PHASE) circuit 3 2EC-368
Vehicle speed signal circuit 2 3 3 3EC-466
Power steering pressure sensor circuit 2 3 3EC-472

EC-98
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
1 - 6: The numbers refer to the order of inspection.
(continued on next page) ECM 22333333333
EC-477
,
EC-481
Intake valve timing control solenoid valve cir-
cuit 32 13223 3
EC-181
Park/neutral position (PNP) switch circuit 3 3 3 3 3 EC-489
Refrigerant pressure sensor circuit 2 3 3 4EC-662
Electrical load signal circuit 3EC-626
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

TROUBLE DIAGNOSIS EC-99
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
SYSTEM — ENGINE MECHANICAL & OTHER
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
5 FL-10
Fuel piping 5 5 5 5 5 5
EM-45
Vapor lock —
Valve deposit 5 555 55 5 —
Poor fuel (Heavy weight gaso-
line, Low octane) —
Air Air duct
55555 5 EM-17
Air cleaner
EM-17
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator) 5555 EM-17
Electric throttle control actuator
EM-19
Air leakage from intake manifold/
Collector/Gasket EM-19,
EM-24
Cranking Battery 111111
1 1
SC-4
Generator circuit
SC-20
Starter circuit 3SC-8
Signal plate 6EM-123
Park/neutral position (PNP)
switch 4
AT- 11 2
Engine Cylinder head
55555 55 5 EM-101
Cylinder head gasket 4 3
Cylinder block
66666 66 6 4
EM-123
Piston
Piston ring
Connecting rod
Bearing
Crankshaft