2005 INFINITI FX35 engine

TROUBLE DIAGNOSIS EC-813
[VK45DE]
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EC
Revision: 2005 July 2005 FX
ECM Harness Connector Terminal LayoutABS007I5
ECM Terminals and Reference ValueABS007I6
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
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MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
1 B ECM ground [Engine is running]

Idle speedBody ground

EC-814
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
2L Heated oxygen sensor 1
heater (bank 1) [Engine is running]

Warm-up condition

Engine speed: Below 3,000 rpm Approximately 7V
[Engine is running]

Engine speed: Above 3,000 rpm BATTERY VOLTAGE
(11 - 14V)
3P Throttle control motor relay
power supply [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
4L/W Throttle control motor
(Close) [Ignition switch: ON]

Engine stopped

Selector lever: D

Accelerator pedal: Released 0 - 14V
5L/B Throttle control motor
(Open) [Ignition switch: ON]

Engine stopped

Selector lever: D

Accelerator pedal: Fully depressed 0 - 14V
6R Heated oxygen sensor 2
heater (bank 1) [Engine is running]

Engine speed: 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 load 0 - 1.0V
[Ignition switch: ON]

Engine stopped
[Engine is running]

Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
10 OR Intake valve timing control
solenoid valve (bank 1) [Engine is running]

Warm-up condition

Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

Engine speed: 2,000rpm 7 - 12V
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB0519E
PBIB1104E
PBIB1105E
PBIB1790E

TROUBLE DIAGNOSIS EC-815
[VK45DE]
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Revision: 2005 July 2005 FX
11 B R Intake valve timing control
solenoid valve (bank 2) [Engine is running]

Warm-up condition

Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

Engine speed: 2,000rpm 7 - 12V
12 R/G Power steering pressure
sensor [Engine is running]

Steering wheel: Being turned
0.5 - 4.5V
[Engine is running]

Steering wheel: Not being turned 0.4 - 0.8V
13 Y Crankshaft position sensor
(POS) [Engine is running]

Warm-up condition

Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle 1.0 - 2.0V
[Engine is running]

Engine speed: 2,000 rpm 1.0 - 2.0V
14 W Camshaft position sensor
(PHASE) [Engine is running]

Warm-up condition

Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle 1.0 - 4.0V
[Engine is running]

Engine speed: 2,000 rpm 1.0 - 4.0V
15 W Knock sensor (bank 1) [Engine is running]

Idle speed Approximately 2.5V
16 R/L Heated oxygen sensor 1
(bank 1) [Engine is running]

Warm-up condition

Engine speed: 2,000 rpm 0 - Approximately 1.0V
(Periodically change)
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB1790E
PBIB1041E
PBIB1042E
PBIB1039E
PBIB1040E

EC-816
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
21
22
23
40
41
42
44
63 W
R
P
PU
BR
B
OR
G Injector 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 idle BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14V)
24 BR Heated oxygen sensor 1
heater (bank 2) [Engine is running]

Warm-up condition

Engine speed: Below 3,000 rpm Approximately 7V
[Engine is running]

Engine speed: Above 3,000 rpm BATTERY VOLTAGE
(11 - 14V)
25 P Heated oxygen sensor 2
heater (bank 2) [Engine is running]

Engine speed: 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 load 0 - 1.0V
[Ignition switch: ON]

Engine stopped
[Engine is running]

Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
29 GY VIAS control solenoid valve [Engine is running]

Selector lever: P or N
0 - 1.0V
[Engine is running]

Selector lever: D BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Engine speed: Above 5,000 rpm 0 - 1.0V
32 OR EVAP control system pres-
sure sensor [Ignition switch: ON]
Approximately 1.8 - 4.8V
34 Y Intake air temperature sen-
sor [Engine is running] Approximately 0 - 4.8V
Output voltage varies with intake
air temperature.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB0042E
PBIB0043E
PBIB0519E

TROUBLE DIAGNOSIS EC-817
[VK45DE]
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EC
Revision: 2005 July 2005 FX35 BR Heated oxygen sensor 1
(bank 2) [Engine is running]
Warm-up condition

Engine speed:2,000 rpm 0 - Approximately 1.0V
(Periodically change)
36 W Knock sensor (bank 2) [Engine is running]

Idle speedApproximately 2.5V
45 W EVAP canister purge vol-
ume control solenoid valve [Engine is running]

Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Engine speed: About 2,000 rpm (More than
100 seconds after starting engine) 11 - 1 4 V
46
60
61
62
65
79
80
81 L
SB
L
Y
Y
LG
GY
G Ignition 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 idle 0 - 0.2V
[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm 0.1 - 0.4V
47 L Sensor power supply
(Throttle position sensor) [Ignition switch: ON]
Approximately 5V
48 L Sensor power supply
(EVAP control system pres-
sure sensor) [Ignition switch: ON]
Approximately 5V
49 PU Sensor power supply
(Refrigerant pressure sen-
sor) [Ignition switch: ON]
Approximately 5V
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB0050E
PBIB0051E
PBIB0044E
PBIB0045E

EC-818
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
50 W Throttle position sensor 1 [Ignition switch: ON]

Engine stopped

Selector lever: D

Accelerator pedal: Fully released
More than 0.36V
[Ignition switch: ON]

Engine stopped

Selector lever: D

Accelerator pedal: Fully depressed Less than 4.75V
51 L/W Mass air flow sensor [Engine is running]

Warm-up condition

Idle speed
1.0 - 1.3V
[Engine is running]

Warm-up condition

Engine speed: 2,500 rpm 1.6 - 2.0V
53 R/L Intake valve timing control
position sensor (bank 2) [Engine is running]

Warm-up condition

Idle speed
0 - 1.0V
[Engine is running]

Engine speed: 2,000 rpm 0 - 1.0V
55 W/R Heated oxygen sensor 2
(bank 1) [Engine is running]

Warm-up condition

Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load 0 - Approximately 1.0V
66 B Sensor ground
(Throttle position sensor) [Engine is running]

Warm-up condition

Idle speed
Approximately 0V
67 B/W Sensor ground [Engine is running]

Warm-up condition

Idle speed Approximately 0V
68 SB Sensor power supply
(Power steering pressure
sensor) [Ignition switch: ON]
Approximately 5V
69 R Throttle position sensor 2 [Ignition switch: ON]

Engine stopped

Selector lever: D

Accelerator pedal: Fully released
Less than 4.75V
[Ignition switch: ON]

Engine stopped

Selector lever: D

Accelerator pedal: Fully depressed More than 0.36V
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB2046E

TROUBLE DIAGNOSIS EC-819
[VK45DE]
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EC
Revision: 2005 July 2005 FX70 L/R Refrigerant pressure sensor [Engine is running]
Warm-up condition

Both A/C switch and blower fan motor
switch: ON (Compressor operates) 1.0 - 4.0V
72 BR Intake valve timing control
position sensor (bank 1) [Engine is running]

Warm-up condition

Idle speed
0 - 1.0V
[Engine is running]

Engine speed: 2,000rpm 0 - 1.0V
73 OR Engine coolant temperature
sensor [Engine is running] Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature.
74 LG/B Heated oxygen sensor 2
(bank 2) [Engine is running]

Warm-up condition

Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load 0 - Approximately 1.0V
78 B/R Sensor ground
(Heated oxygen sensor) [Engine is running]

Warm-up condition

Idle speed
Approximately 0V
82 B/W Sensor ground
(APP sensor 1 / ICC steer-
ing switch / ASCD steering
switch) [Engine is running]

Warm-up condition

Idle speed
Approximately 0V
83 G/OR Sensor ground
(APP sensor 2) [Engine is running]

Warm-up condition

Idle speed
Approximately 0V
85 PU Data link connector [Ignition switch: ON]

CONSULT-II or GST: Disconnected Approximately 5V - Battery volt-
age (11 - 14V)
86 R CAN communication line [Ignition switch: ON] Approximately 1.1 - 2.3V
Output voltage varies with the
communication status.
90 L/B Sensor power supply
(APP sensor 1) [Ignition switch: ON]
Approximately 5V
91 G Sensor power supply
(APP sensor 2) [Ignition switch: ON]
Approximately 5V
94 L CAN communication line [Ignition switch: ON] Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB2046E

EC-820
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
98 B/P Accelerator pedal position
sensor 2 [Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully released
0.15 - 0.60V
[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully depressed 1.95 - 2.40V
99 G/Y ICC steering switch
(models with ICC system) [Ignition switch: ON]

ICC steering switch: OFF
Approximately 4.3V
[Ignition switch: ON]

MAIN switch: Pressed Approximately 0V
[Ignition switch: ON]

CANCEL switch: Pressed Approximately 1.3V
[Ignition switch: ON]

RESUME/ACCELERATE switch: Pressed Approximately 3.7V
[Ignition switch: ON]

SET/COAST switch: Pressed Approximately 3V
[Ignition switch: ON]

DISTANCE switch: Pressed Approximately 2.2V
99 G/Y ASCD steering switch
(models with ASCD system) [Ignition switch: ON]

ASCD steering switch: OFF
Approximately 4V
[Ignition switch: ON]

MAIN switch: Pressed Approximately 0V
[Ignition switch: ON]

CANCEL switch: Pressed Approximately 1V
[Ignition switch: ON]

RESUME/ACCELERATE switch: Pressed Approximately 3V
[Ignition switch: ON]

SET/COAST switch: Pressed Approximately 2V
101 P/L Stop lamp switch [Ignition switch: OFF]

Brake pedal: Fully released
Approximately 0V
[Ignition switch: OFF]

Brake pedal: Slightly depressed BATTERY VOLTAGE
(11 - 14V)
102 LG/B PNP switch [Ignition switch: ON]

Selector lever: P or N
Approximately 0V
[Ignition switch: ON]

Selector lever: Except above BATTERY VOLTAGE
(11 - 14V)
104 L/OR Throttle control motor relay [Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON] 0 - 1.0V
106 R/B Accelerator pedal position
sensor 1 [Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully released
0.5 - 1.0V
[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully depressed 3.9 - 4.7V
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)