P1140

DTC P1140, P1145 IVT CONTROL POSITION SENSOR





Component Description





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-III Reference Value in Data Monitor Mode
Specification data are reference values.









On Board Diagnosis Logic

On Board Diagnosis Logic:

DTC Confirmation Procedure
1. If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
c. Turn ignition switch OFF and wait at least 10 seconds.
2. Start engine and let it idle for 10 seconds.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to P1140.




Wiring Diagram

BANK 1





Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.

CAUTION:
Never use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.





BANK 2





Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.

CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.








Diagnosis Procedure
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to Power Supply and Ground Circuit.





OK or NG
OK - GO TO 2.
NG - Repair or replace ground connections.
2.CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR POWER SUPPLY CIRCUIT
1. Disconnect intake valve timing control position sensor harness connector.





2. Turn ignition switch ON.





3. Check voltage between intake valve timing control position sensor terminal 3 and ground with CONSULT-III or tester.

Voltage: Battery voltage

OK or NG
OK - GO TO 4.
NG - GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E108, M15
- Harness connectors F102, M72
- Harness for open or short between intake valve timing control position sensor and IPDM E/R
- Harness for open or short between intake valve timing control position sensor and ECM
Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR GROUND CIRCUIT FOR OPEN AND
SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between intake valve timing control position sensor terminal 1 and ground. Refer to Wiring Diagram.

Continuity should exist.

3. Also check harness for short to power.
OK or NG
OK - GO TO 6.
NG - GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F102, M72
- Harness for open or short between intake valve timing control position sensor and ground
Repair open circuit or short to power in harness or connectors.
6.CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN
AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between the following;
ECM terminal 72 and intake valve timing control position sensor (bank 1) terminal 2 or
ECM terminal 53 and intake valve timing control position sensor (bank 2) terminal 2. Refer to Wiring Diagram.

Continuity should exist.

3. Also check harness for short to ground and short to power.
OK or NG
OK - GO TO 7.
NG - Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR
Refer to P1140.
OK or NG
OK - GO TO 8.
NG - Replace intake valve timing control position sensor.
8.CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to P0335.
OK or NG
OK - GO TO 9.
NG - Replace crankshaft position sensor (POS).
9.CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to P0340.
OK or NG
OK - GO TO 10.
NG - Replace camshaft position sensor (PHASE).
10.CHECK CAMSHAFT SPROCKET
Check accumulation of debris to the signal pick-up portion of the camshaft sprocket. Refer to Component.
OK or NG
OK - GO TO 11.
NG - Remove debris and clean the signal pick-up cutout of camshaft sprocket.
11.CHECK INTERMITTENT INCIDENT
Refer to Diagnosis Procedure.
INSPECTION END




Component Inspection

INTAKE VALVE TIMING CONTROL POSITION SENSOR
1. Disconnect intake valve timing control position sensor harness connector.
2. Loosen the fixing bolt of the sensor.
3. Remove the sensor.





4. Visually check the sensor for chipping.
5. Check resistance as shown below.










6. If NG, replace intake valve timing control position sensor.




Removal and Installation

INTAKE VALVE TIMING CONTROL POSITION SENSOR
Refer to Exploded View.