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EC-748
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TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Circuit DiagramABS00BZU
TBWM0321E
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TROUBLE DIAGNOSIS
EC-749
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Revision: 2004 November 2004 FX35/FX45
TBWM0520E
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![INFINITI FX35 2004 Service Manual EC-750
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
ECM Harness Connector Terminal LayoutABS00BZV
ECM Terminals and Reference ValueABS00BZW
PREPARATION
1. ECM is located behind th INFINITI FX35 2004 Service Manual EC-750
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
ECM Harness Connector Terminal LayoutABS00BZV
ECM Terminals and Reference ValueABS00BZW
PREPARATION
1. ECM is located behind th](/manual-img/42/57021/w960_57021-2090.png)
EC-750
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
ECM Harness Connector Terminal LayoutABS00BZV
ECM Terminals and Reference ValueABS00BZW
PREPARATION
1. ECM is located behind the passenger side instrument lower
panel. For this inspection, remove passenger side instrument
lower panel.
2. Remove ECM harness connector.
3. When disconnecting ECM harness connector, loosen it with
levers as far as they will go as shown at right.
4. Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.
Use extreme care not to touch 2 pins at one time.
Data is for comparison and may not be exact.
ECM INSPECTION TABLE
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
PBIB1192E
PBIB1505E
PBIB1512E
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
1 B ECM ground[Engine is running]
Idle speedBody ground
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EC-751
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Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is belo INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-751
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Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is belo](/manual-img/42/57021/w960_57021-2091.png)
TROUBLE DIAGNOSIS
EC-751
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Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7V
[Engine is running]
Engine speed is above 3,000 rpmBATTERY VOLTAGE
(11 - 14V)
3PThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4L/WThrottle control motor
(Close)[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is released0 - 14V
5L/BThrottle control motor
(Open)[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is fully depressed0 - 14V
6RHeated oxygen sensor 2
heater (bank 1)[Engine is running]
Engine speed is below 3,600 rpm after the
following conditions are met
–Engine: after warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed is above 3,600 rpmBATTERY VOLTAGE
(11 - 14V)
10 ORIntake valve timing control
solenoid valve (bank 1)[Engine is running]
Warm-up condition
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed is 2,000rpm7 - 12V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0519E
PBIB1104E
PBIB1105E
PBIB1790E
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![INFINITI FX35 2004 Service Manual EC-752
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7 INFINITI FX35 2004 Service Manual EC-752
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7](/manual-img/42/57021/w960_57021-2092.png)
EC-752
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7V
[Engine is running]
Engine speed is above 3,000 rpmBATTERY VOLTAGE
(11 - 14V)
3PThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4L/WThrottle control motor
(Close)[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is released0 - 14V
5L/BThrottle control motor
(Open)[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is fully depressed0 - 14V
6RHeated oxygen sensor 2
heater (bank 1)[Engine is running]
Engine speed is below 3,600 rpm after the
following conditions are met
–Engine: after warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed is above 3,600 rpmBATTERY VOLTAGE
(11 - 14V)
10 ORIntake valve timing control
solenoid valve (bank 1)[Engine is running]
Warm-up condition
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed is 2,000rpm7 - 12V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0519E
PBIB1104E
PBIB1105E
PBIB1790E
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EC-753
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Revision: 2004 November 2004 FX35/FX45
11 B RIntake valve timing control
solenoid valve (bank 2)[Engine is running]
Warm-up condition
Idl INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-753
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Revision: 2004 November 2004 FX35/FX45
11 B RIntake valve timing control
solenoid valve (bank 2)[Engine is running]
Warm-up condition
Idl](/manual-img/42/57021/w960_57021-2093.png)
TROUBLE DIAGNOSIS
EC-753
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Revision: 2004 November 2004 FX35/FX45
11 B RIntake valve timing control
solenoid valve (bank 2)[Engine is running]
Warm-up condition
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed is 2,000rpm7 - 12V
12 R/GPower steering pressure
sensor[Engine is running]
Steering wheel is being turned0.5 - 4.5V
[Engine is running]
Steering wheel is not being turned0.4 - 0.8V
13 YCrankshaft position sensor
(POS)[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle1.0 - 2.0V
[Engine is running]
Engine speed is 2,000 rpm1.0 - 2.0V
14 WCamshaft position sensor
(PHASE)[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle1.0 - 4.0V
[Engine is running]
Engine speed is 2,000 rpm1.0 - 4.0V
15 W Knock sensor 1[Engine is running]
Idle speedApproximately 2.5V
16 R/LHeated oxygen sensor 1
(bank 1)[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0 - Approximately 1.0V
(Periodically change) TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB1790E
PBIB1041E
PBIB1042E
PBIB1039E
PBIB1040E
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![INFINITI FX35 2004 Service Manual EC-754
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TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
21
22
23
40
41
42
44
63W
R
P
PU
BR
B
OR
GInjector No. 5
Injector No. 3
Injector No. 1
Injector No. 6
Injector No. 4
Injector N INFINITI FX35 2004 Service Manual EC-754
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TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
21
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41
42
44
63W
R
P
PU
BR
B
OR
GInjector No. 5
Injector No. 3
Injector No. 1
Injector No. 6
Injector No. 4
Injector N](/manual-img/42/57021/w960_57021-2094.png)
EC-754
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
21
22
23
40
41
42
44
63W
R
P
PU
BR
B
OR
GInjector No. 5
Injector No. 3
Injector No. 1
Injector No. 6
Injector No. 4
Injector No. 2
Injector No. 7
Injector No. 8[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idleBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
24 BRHeated oxygen sensor 1
heater (bank 2)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7V
[Engine is running]
Engine speed is above 3,000 rpmBATTERY VOLTAGE
(11 - 14V)
25 PHeated oxygen sensor 2
heater (bank 2)[Engine is running]
Engine speed is below 3,600 rpm after the
following conditions are met
–Engine: after warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed is above 3,600 rpmBATTERY VOLTAGE
(11 - 14V)
29 GY VIAS control solenoid valve[Engine is running]
Shift lever position is P or N0 - 1.0V
[Engine is running]
Shift lever position is DBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Engine speed is above 5,000 rpm0 - 1.0V
32 OREVAP control system pres-
sure sensor[Ignition switch: ON]Approximately 1.8 - 4.8V
34 YIntake air temperature sen-
sor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with intake
air temperature. TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0042E
PBIB0043E
PBIB0519E
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Revision: 2004 November 2004 FX35/FX4535 BRHeated oxygen sensor 1
(bank 2)[Engine is running]Warm-up condition
Engine speed is 2,000 rpm0 INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-755
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Revision: 2004 November 2004 FX35/FX4535 BRHeated oxygen sensor 1
(bank 2)[Engine is running]Warm-up condition
Engine speed is 2,000 rpm0](/manual-img/42/57021/w960_57021-2095.png)
TROUBLE DIAGNOSIS
EC-755
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Revision: 2004 November 2004 FX35/FX4535 BRHeated oxygen sensor 1
(bank 2)[Engine is running]Warm-up condition
Engine speed is 2,000 rpm0 - Approximately 1.0V
(Periodically change)
36 W Knock sensor 2[Engine is running]
Idle speedApproximately 2.5V
45 WEVAP canister purge vol-
ume control solenoid valve[Engine is running]
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Engine speed is about 2,000 rpm (More
than 100 seconds after starting engine)11 - 1 4 V
46
60
61
62
65
79
80
81L
SB
L
Y
Y
LG
GY
GIgnition signal No. 7
Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1
Ignition signal No. 8
Ignition signal No. 6
Ignition signal No. 4
Ignition signal No. 2[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle0 - 0.2V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0.1 - 0.4V
47 LSensor power supply
(Throttle position sensor)[Ignition switch: ON]Approximately 5V
48 LSensor power supply
(Mass air flow sensor /
EVAP control system pres-
sure sensor)[Ignition switch: ON]Approximately 5V
49 PUSensor power supply
(Refrigerant pressure sen-
sor)[Ignition switch: ON]Approximately 5V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0050E
PBIB0051E
PBIB0044E
PBIB0045E