2006 INFINITI FX35 knock sensor

INDEX FOR DTC EC-677
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45P0139 0139 HO2S2 (B1) EC-964
P0150 0150 A/F SENSOR1 (B2)EC-900
P0151 0151 A/F SENSOR1 (B2)EC-910
P0152 0152 A/F SENSOR1 (B2)EC-919
P0153 0153 A/F SENSOR1 (B2)EC-928
P0157 0157 HO2S2 (B2)EC-940
P0158 0158 HO2S2 (B2)EC-951
P0159 0159 HO2S2 (B2)EC-964
P0171 0171 FUEL SYS-LEAN-B1EC-975
P0172 0172 FUEL SYS-RICH-B1EC-986
P0174 0174 FUEL SYS-LEAN-B2EC-975
P0175 0175 FUEL SYS-RICH-B2EC-986
P0181 0181 FTT SENSOREC-997
P0182 0182 FTT SEN/CIRCUITEC-1003
P0183 0183 FTT SEN/CIRCUITEC-1003
P0222 0222 TP SEN 1/CIRCEC-1008
P0223 0223 TP SEN 1/CIRCEC-1008
P0300 0300 MULTI CYL MISFIREEC-1015
P0301 0301 CYL 1 MISFIREEC-1015
P0302 0302 CYL 2 MISFIREEC-1015
P0303 0303 CYL 3 MISFIREEC-1015
P0304 0304 CYL 4 MISFIREEC-1015
P0305 0305 CYL 5 MISFIREEC-1015
P0306 0306 CYL 6 MISFIREEC-1015
P0307 0307 CYL 7 MISFIREEC-1015
P0308 0308 CYL 8 MISFIREEC-1015
P0327 0327 KNOCK SEN/CIRC-B1EC-1025
P0328 0328 KNOCK SEN/CIRC-B1EC-1025
P0332 0332 KNOCK SEN/CIRC-B2EC-1025
P0333 0333 KNOCK SEN/CIRC-B2EC-1025
P0335 0335 CKP SEN/CIRCUITEC-1030
P0340 0340 CMP SEN/CIRC-B1EC-1037
P0420 0420 TW CATALYST SYS-B1EC-1044
P0430 0430 TW CATALYST SYS-B2EC-1044
P0441 0441 EVAP PURG FLOW/MONEC-1049
P0442 0442 EVAP SMALL LEAKEC-1054
P0443 0443 PURG VOLUME CONT/VEC-1063
P0444 0444 PURG VOLUME CONT/VEC-1071
P0445 0445 PURG VOLUME CONT/VEC-1071
P0447 0447 VENT CONTROL VALVEEC-1078
P0448 0448 VENT CONTROL VALVEEC-1085
P0451 0451 EVAP SYS PRES SENEC-1091
DTC*1
Items
(CONSULT-II screen terms) Reference page
CONSULT-II
GST*
2ECM*3

EC-682
[VK45DE]
INDEX FOR DTC
Revision: 2006 December 2006 FX35/FX45
FUEL SYS-RICH-B2 P0175 0175 EC-986
HLR/C SOL/CIRC P1767 1767 AT- 1 5 8
HLR/C SOL FNCTN P1769 1769AT- 1 6 0
HO2S2 (B1) P0137 0137EC-940
HO2S2 (B1) P0138 0138EC-951
HO2S2 (B1) P0139 0139EC-964
HO2S2 (B2) P0157 0157EC-940
HO2S2 (B2) P0158 0158EC-951
HO2S2 (B2) P0159 0159EC-964
HO2S2 HTR (B1) P0037 0037EC-843
HO2S2 HTR (B1) P0038 0038EC-843
HO2S2 HTR (B2) P0057 0057EC-843
HO2S2 HTR (B2) P0058 0058EC-843
I/C SOLENOID/CIRC P1752 1752 AT- 1 4 6
I/C SOLENOID FNCTN P1754 1754AT- 1 4 8
IAT SEN/CIRCUIT P0112 0112EC-874
IAT SEN/CIRCUIT P0113 0113EC-874
IAT SENSOR P0127 0127EC-895
IN PULY SPEED P1715 1715EC-1223
INT/V TIM CONT-B1 P0011 0011 EC-824
INT/V TIM CONT-B2 P0021 0021EC-824
INT/V TIM V/CIR-B1 P0075 0075EC-851
INT/V TIM V/CIR-B2 P0081 0081EC-851
INTK TIM S/CIRC-B1 P1140 1140EC-1159
INTK TIM S/CIRC-B2 P1145 1145EC-1159
ISC SYSTEM P0506 0506EC-1133
ISC SYSTEM P0507 0507EC-1135
KNOCK SEN/CIRC-B1 P0327 0327EC-1025
KNOCK SEN/CIRC-B1 P0328 0328EC-1025
KNOCK SEN/CIRC-B2 P0332 0332EC-1025
KNOCK SEN/CIRC-B2 P0333 0333EC-1025
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-858
MAF SEN/CIRCUIT P0102 0102EC-867
MAF SEN/CIRCUIT P0103 0103EC-867
MULTI CYL MISFIRE P0300 0300EC-1015
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EC-713
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED. P0000 0000 —
P-N POS SW/CIRCUIT P0850 0850 EC-1154
Items
(CONSULT-II screen terms) DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3

ENGINE CONTROL SYSTEM EC-691
[VK45DE]
C
D E
F
G H
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J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Multiport Fuel Injection (MFI) SystemNBS004JO
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 the crankshaft position sensor (POS), camshaft position
sensor (PHASE) 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
Battery Battery voltage*
3
Knock sensor Engine knocking condition
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
ABS actuator and electric unit (control unit) VDC/TCS operation command*
2
Air conditioner switch Air conditioner operation
Wheel sensor Vehicle speed*
2

ENGINE CONTROL SYSTEM EC-693
[VK45DE]
C
D E
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G H
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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 eight cylinders twice each engine cycle. In other words, pulse signals of
the same width are simultaneously transmitted from the ECM.
The eight 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) SystemNBS004JP
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 - 8 - 7 - 3 - 6 - 5 - 4 - 2
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
PBIB0122E
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
Battery Battery voltage*
2
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Wheel sensor Vehicle speed*
1

EC-694
[VK45DE]
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)NBS004JQ
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
If the engine speed is above 1,400 rpm under no load (for example, the selector lever position is neutral and
engine speed is over 1,400 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off var-
ies based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,000 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-691
.
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-716
[VK45DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 December 2006 FX35/FX45
HO2S2 (B1) P0138 0138 ××2×EC-951
HO2S2 (B1) P0139 0139 ××2×EC-964
A/F SENSOR1 (B2) P0150 0150 — ×2 ×EC-900
A/F SENSOR1 (B2) P0151 0151 — ×2 ×EC-910
A/F SENSOR1 (B2) P0152 0152 — ×2 ×EC-919
A/F SENSOR1 (B2) P0153 0153 ××2×EC-928
HO2S2 (B2) P0157 0157 ××2×EC-940
HO2S2 (B2) P0158 0158 ××2×EC-951
HO2S2 (B2) P0159 0159 ××2×EC-964
FUEL SYS-LEAN-B1 P0171 0171 — — 2 ×EC-975
FUEL SYS-RICH-B1 P0172 0172 — — 2 ×EC-986
FUEL SYS-LEAN-B2 P0174 0174 — — 2 ×EC-975
FUEL SYS-RICH-B2 P0175 0175 — — 2 ×EC-986
FTT SENSOR P0181 0181 — — 2 ×EC-997
FTT SEN/CIRCUIT P0182 0182 — — 2 ×EC-1003
FTT SEN/CIRCUIT P0183 0183 — — 2 ×EC-1003
TP SEN 1/CIRC P0222 0222 — — 1 ×EC-1008
TP SEN 1/CIRC P0223 0223 — — 1 ×EC-1008
MULTI CYL MISFIRE P0300 0300 — — 2 ×EC-1015
CYL 1 MISFIRE P0301 0301 — — 2 ×EC-1015
CYL 2 MISFIRE P0302 0302 — — 2 ×EC-1015
CYL 3 MISFIRE P0303 0303 — — 2 ×EC-1015
CYL 4 MISFIRE P0304 0304 — — 2 ×EC-1015
CYL 5 MISFIRE P0305 0305 — — 2 ×EC-1015
CYL 6 MISFIRE P0306 0306 — — 2 ×EC-1015
CYL 7 MISFIRE P0307 0307 — — 2 ×EC-1015
CYL 8 MISFIRE P0308 0308 — — 2 ×EC-1015
KNOCK SEN/CIRC-B1 P0327 0327 — — 2 — EC-1025
KNOCK SEN/CIRC-B1 P0328 0328 — — 2 —EC-1025
KNOCK SEN/CIRC-B2 P0332 0332 — — 2 —EC-1025
KNOCK SEN/CIRC-B2 P0333 0333 — — 2 —EC-1025
CKP SEN/CIRCUIT P0335 0335 — — 2×EC-1030
CMP SEN/CIRC-B1 P0340 0340 — — 2 ×EC-1037
TW CATALYST SYS-B1 P0420 0420 ××2×EC-1044
TW CATALYST SYS-B2 P0430 0430 ××2×EC-1044
EVAP PURG FLOW/MON P0441 0441 ××2×EC-1049
EVAP SMALL LEAK P0442 0442 ××2×EC-1054
PURG VOLUME CONT/V P0443 0443 — — 2 ×EC-1063
PURG VOLUME CONT/V P0444 0444 — — 2 ×EC-1071
PURG VOLUME CONT/V P0445 0445 — — 2 ×EC-1071
VENT CONTROL VALVE P0447 0447 — — 2 ×EC-1078
VENT CONTROL VALVE P0448 0448 — — 2 ×EC-1085
Items
(CONSULT-II screen terms) DTC*
1
SRT code
Test value/
Te s t l i m i t
(GST only) Trip MIL
Reference
page
CONSULT-II
GST*
2ECM*3

EC-754
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
DTC Inspection Priority ChartNBS004JW
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-819, "
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-822, "
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

P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor

P0128 Thermostat function

P0181 P0182 P0183 Fuel tank temperature sensor

P0327 P0328 P0332 P0333 Knock sensor

P0335 Crankshaft position sensor (POS)

P0340 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-757
[VK45DE]
C
D E
F
G H
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K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Symptom Matrix ChartNBS00420
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-1314
Fuel pressure regulator system334444444 4 EC-746
Fuel injector circuit 11232 22 2 EM-194
Evaporative emission system334444444 4 EC-699
Air Positive crankcase ventilation sys-
tem 33 4444444 41
EC-711
Incorrect idle speed adjustment 1 1 1 1 1 EC-737
Electric throttle control actuator 112332222 2 2 EC-1240,
EC-1252
IgnitionIncorrect ignition timing adjustment33111 11 1 EC-737
Ignition circuit 11222 22 2EC-1328
Main power supply and ground circuit22333 33 23 EC-812
Mass air flow sensor circuit
1
12 2
222 2 EC-858,
EC-867
,
Engine coolant temperature sensor circuit
3 33
EC-879
,
EC-892
A/F sensor 1 circuit EC-900
,
EC-910
,
EC-919
,
EC-928
,
EC-1283
Throttle position sensor circuit
22 EC-885
,
EC-1008
,
EC-1183
,
EC-1185
,
EC-1268
Accelerator pedal position sensor circuit 3 2 1 EC-1149
,
EC-1254
,
EC-1261
,
EC-1275
Knock sensor circuit 2 3 EC-1025
Crankshaft position sensor (POS) circuit 2 2EC-1030
Camshaft position sensor (PHASE) circuit 3 2EC-1037
Vehicle speed signal circuit 2 3 3 3EC-1131
Power steering pressure sensor circuit 2 3 3EC-1137