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EC-120
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Vacuum Hose DrawingABS006K5
Refer to EC-30, "System Diagram" for Vacuum Control System.
PBIB2000E
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TROUBLE DIAGNOSIS EC-121
[VQ35DE]
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Revision: 2005 July 2005 FX
Circuit DiagramABS006KU
TBWH0101E
Page 1515 of 4731
EC-122
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
TBWM0731E
Page 1516 of 4731
![INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-123
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Revision: 2005 July 2005 FX
ECM Harness Connector Terminal LayoutABS006KV
ECM Terminals and Reference ValueABS006KW
PREPARATIO INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-123
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Revision: 2005 July 2005 FX
ECM Harness Connector Terminal LayoutABS006KV
ECM Terminals and Reference ValueABS006KW
PREPARATIO](/manual-img/42/57020/w960_57020-1515.png)
TROUBLE DIAGNOSIS EC-123
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Revision: 2005 July 2005 FX
ECM Harness Connector Terminal LayoutABS006KV
ECM Terminals and Reference ValueABS006KW
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 in the figure.
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
PBIB1578E
PBIB1512E
TER-
MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
1 B ECM ground [Engine is running]
Idle speedBody ground
2R/L A/F sensor 1 heater
(bank 1) [Engine is running]
Warm-up condition
Idle speed Approximately 5V
PBIB1584E
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![INFINITI FX35 2005 Service Manual EC-124
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
3R Throttle control motor relay
power supply [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
4L/W Throttle control motor
(Close) INFINITI FX35 2005 Service Manual EC-124
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
3R Throttle control motor relay
power supply [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
4L/W Throttle control motor
(Close)](/manual-img/42/57020/w960_57020-1516.png)
EC-124
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
3R 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: Fully 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 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 load 0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed is above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
10 OR 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
When revving engine up to 2,500 rpm
quickly 7 - 12V
11 B R 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
When revving engine up to 2,500 rpm
quickly 7 - 12V
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB1104E
PBIB1105E
PBIB1790E
PBIB1790E
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![INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-125
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Revision: 2005 July 2005 FX12 R/G Power steering pressure
sensor [Engine is running]Steering wheel: Being turned
0.5 - 4. INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-125
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Revision: 2005 July 2005 FX12 R/G Power steering pressure
sensor [Engine is running]Steering wheel: Being turned
0.5 - 4.](/manual-img/42/57020/w960_57020-1517.png)
TROUBLE DIAGNOSIS EC-125
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Revision: 2005 July 2005 FX12 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 Approximately 1.6V
[Engine is running]
Engine speed is 2,000 rpm Approximately 1.4V
14 BR Camshaft position sensor
(PHASE) (bank 2) [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 is 2,000 rpm 1.0 - 4.0V
15 W Knock sensor [Engine is running]
Idle speed Approximately 2.5V
16 G
A/F sensor 1 (Bank 1) [Engine is running]
Warm-up condition
Idle speed Approximately 3.1V
35 B/R Approximately 2.6V
56 L Approximately 2.3V
75 R/B Approximately 2.3V
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB1041E
PBIB1042E
PBIB1039E
PBIB1040E
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![INFINITI FX35 2005 Service Manual EC-126
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
21
22
23 W
G
R Injector No. 5
Injector No. 3
Injector No. 1 [Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse INFINITI FX35 2005 Service Manual EC-126
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
21
22
23 W
G
R Injector No. 5
Injector No. 3
Injector No. 1 [Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse](/manual-img/42/57020/w960_57020-1518.png)
EC-126
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
21
22
23 W
G
R Injector No. 5
Injector No. 3
Injector No. 1 [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 is 2,000 rpm BATTERY VOLTAGE
(11 - 14V)
24 L A/F sensor 1 heater
(Bank 2) [Engine is running]
Warm-up condition
Idle speed Approximately 5V
25 P Heated 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 load 0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed is above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
32 OR EVAP control system pres-
sure sensor [Ignition switch: ON]
Approximately 1.8 - 4.8V
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
SEC984C
SEC985C
PBIB1584E
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![INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-127
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Revision: 2005 July 2005 FX
33 R/L Camshaft position sensor
(PHASE) (bank 1) [Engine is running]
Warm-up condition
Idle s INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-127
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Revision: 2005 July 2005 FX
33 R/L Camshaft position sensor
(PHASE) (bank 1) [Engine is running]
Warm-up condition
Idle s](/manual-img/42/57020/w960_57020-1519.png)
TROUBLE DIAGNOSIS EC-127
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Revision: 2005 July 2005 FX
33 R/L Camshaft position sensor
(PHASE) (bank 1) [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 is 2,000 rpm 1.0 - 4.0V
34 OR Intake air temperature sen-
sor [Engine is running] Approximately 0 - 4.8V
Output voltage varies with intake
air temperature.
40
41
42 LG
B
P Injector No. 6
Injector No. 4
Injector No. 2 [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 is 2,000 rpm BATTERY VOLTAGE
(11 - 14V)
45 GY EVAP canister purge vol-
ume control solenoid valve [Engine is running]
Idle speed
Accelerator pedal is not depressed even
slightly, after engine starting BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Engine speed is about 2,000 rpm (More
than 100 seconds after starting engine) BATTERY VOLTAGE
(11 - 14V)
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB1039E
PBIB1040E
SEC984C
SEC985C
SEC990C
SEC991C