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![INFINITI FX35 2004 Service Manual EC-1092
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DTC P1128 THROTTLE CONTROL MOTOR
Revision: 2004 November 2004 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is meas INFINITI FX35 2004 Service Manual EC-1092
[VK45DE]
DTC P1128 THROTTLE CONTROL MOTOR
Revision: 2004 November 2004 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is meas](/manual-img/42/57021/w960_57021-2432.png)
EC-1092
[VK45DE]
DTC P1128 THROTTLE CONTROL MOTOR
Revision: 2004 November 2004 FX35/FX45
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 ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureABS00C95
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer to EC-791, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
4L/WThrottle control motor
(Close)[Ignition switch: ON]
Engine stopped
Shift lever: D
Accelerator pedal is released0 - 14V
5L/BThrottle control motor
(Open)[Ignition switch: ON]
Engine stopped
Shift lever: D
Accelerator pedal is fully depressed0 - 14V
PBIB1104E
PBIB1105E
PBIB2195E
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![INFINITI FX35 2004 Service Manual DTC P1128 THROTTLE CONTROL MOTOR
EC-1093
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2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Disconnect INFINITI FX35 2004 Service Manual DTC P1128 THROTTLE CONTROL MOTOR
EC-1093
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2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Disconnect](/manual-img/42/57021/w960_57021-2433.png)
DTC P1128 THROTTLE CONTROL MOTOR
EC-1093
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Revision: 2004 November 2004 FX35/FX45
2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Disconnect electric throttle control actuator harness connector.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3. CHECK THROTTLE CONTROL MOTOR
Refer to EC-1093, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-784, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness or connectors.
5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-698, "
Throttle Valve Closed Position Learning" .
3. Perform EC-698, "
Idle Air Volume Learning" .
>>INSPECTION END
Component InspectionABS00C96
THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector.
2. Check resistance between terminals 3 and 6.
3. If NG, replace electric throttle control actuator and go to next
step.
4. Perform EC-698, "
Throttle Valve Closed Position Learning" .
5. Perform EC-698, "
Idle Air Volume Learning" .
Electric throttle control
actuator terminalECM terminal Continuity
35 Should not exist
4 Should exist
65 Should exist
4 Should not exist
PBIB1480E
Resistance: Approximately 1 - 15 Ω [at 25 °C (77°F)]
PBIB0095E
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EC-1094
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DTC P1128 THROTTLE CONTROL MOTOR
Revision: 2004 November 2004 FX35/FX45
Removal and InstallationABS00C97
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-174, "INTAKE MANIFOLD" .
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![INFINITI FX35 2004 Service Manual DTC P1140, P1145 IVT CONTROL POSITION SENSOR
EC-1095
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DTC P1140, P1145 IVT CONTROL POSITION SENSORPFP:23731
Component Descripti INFINITI FX35 2004 Service Manual DTC P1140, P1145 IVT CONTROL POSITION SENSOR
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DTC P1140, P1145 IVT CONTROL POSITION SENSORPFP:23731
Component Descripti](/manual-img/42/57021/w960_57021-2435.png)
DTC P1140, P1145 IVT CONTROL POSITION SENSOR
EC-1095
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DTC P1140, P1145 IVT CONTROL POSITION SENSORPFP:23731
Component DescriptionABS00C98
Intake valve timing control position sensors are located in the front of
cylinder heads in both bank 1 and bank 2.
This sensor uses a Hall IC.
The cam position is determined by the intake primary cam sprocket
concave (in four places). The ECM provides feedback to the intake
valve timing control for appropriate target valve open-close timing
according to drive conditions based on detected cam position.
CONSULT-II Reference Value in Data Monitor ModeABS00C99
Specification data are reference values.
On Board Diagnosis LogicABS00C9A
DTC Confirmation ProcedureABS00C9B
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Maintain the following conditions for at least 10 seconds.
4. If 1st trip DTC is detected, go to EC-1099, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF359Z
MONITOR ITEM CONDITION SPECIFICATION
INT/V TIM (B1)
INT/V TIM (B2)
Engine: After warming up
Air conditioner switch: OFF
Shift lever: N
No loadIdle−5 - 5°CA
2,000 rpm Approx. 0 - 20°CA
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1140
11 4 0
(bank 1)
Intake valve timing control
position sensor circuitAn excessively high or low voltage from the
sensor is sent to ECM.
Harness or connectors
(Intake valve timing control position
sensor circuit is open or shorted)
Intake valve timing control position
sensor
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Accumulation of debris to the signal
pick-up portion of the camshaft P1145
11 4 5
(bank 2)
ENG SPEED More than idle speed
Selector lever P or N position
Page 2437 of 4449
EC-1096
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DTC P1140, P1145 IVT CONTROL POSITION SENSOR
Revision: 2004 November 2004 FX35/FX45
Wiring DiagramABS00C9C
BANK 1
TBWM0244E
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DTC P1140, P1145 IVT CONTROL POSITION SENSOR
EC-1097
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Revision: 2004 November 2004 FX35/FX45
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 ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
72 BRIntake valve timing
control position sensor
(bank 1)[Engine is running]
Warm-up condition
Idle speed0 - 1.0V
[Engine is running]
Engine speed is 2,000 rpm0 - 1.0V
PBIB2046E
Page 2439 of 4449
EC-1098
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DTC P1140, P1145 IVT CONTROL POSITION SENSOR
Revision: 2004 November 2004 FX35/FX45
BANK 2
TBWM0245E
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![INFINITI FX35 2004 Service Manual DTC P1140, P1145 IVT CONTROL POSITION SENSOR
EC-1099
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Specification data are reference values and are measured between each ter](/manual-img/42/57021/w960_57021-2439.png)
DTC P1140, P1145 IVT CONTROL POSITION SENSOR
EC-1099
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Revision: 2004 November 2004 FX35/FX45
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 ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureABS00C9D
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer to EC-791, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
53 R/LIntake valve timing
control position sensor
(bank 2)[Engine is running]
Warm-up condition
Idle speed0 - 1.0V
[Engine is running]
Engine speed is 2,000 rpm0 - 1.0V
PBIB2046E
PBIB2195E