2ZR-FE ENGINE CONTROL  SFI SYSTEM  P0340  Camshaft Position Sensor Circuit  P0342  Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor)  P0343  Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor)  


DESCRIPTION

The camshaft position sensor (for intake camshaft) (VV1 signal) consists of a magnet and MRE (Magneto Resistance Element).

The intake camshaft has a timing rotor for the camshaft position sensor. When the camshaft rotates, changes occur in the air gaps between the timing rotor and MRE, which affects the magnetic field. As a result, the resistance of the MRE material fluctuates. The camshaft position sensor converts the camshaft rotation data to pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM. Then the ECM uses this data to control fuel injection duration, fuel injection timing and Variable Valve Timing (VVT) system.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0340 Camshaft Position Sensor Circuit One of the following conditions is met:
·

Missing camshaft position sensor (for intake camshaft) signal despite crankshaft position sensor inputs normal at engine speed of 600 rpm or higher (1 trip detection logic).

·

No camshaft position sensor (for intake camshaft) signal to ECM at engine speed of 600 rpm or higher (1 trip detection logic).

·

No camshaft position sensor signal (for intake camshaft) to ECM while cranking (2 trip detection logic).


·

Open or short in camshaft position sensor (for intake camshaft) circuit

·

Camshaft position sensor (for intake camshaft)

·

Intake camshaft

·

Valve timing

·

ECM


Comes on DTC stored
P0342 Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor) The output voltage of the camshaft position sensor (for intake camshaft) is less than 0.3 V for 4 seconds (1 trip detection logic).
·

Open or short in camshaft position sensor (for intake camshaft) circuit

·

Camshaft position sensor (for intake camshaft)

·

ECM


Comes on DTC stored
P0343 Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor) The output voltage of the camshaft position sensor (for intake camshaft) is higher than 4.7 V for 4 seconds (1 trip detection logic).
·

Open or short in camshaft position sensor (for intake camshaft) circuit

·

Camshaft position sensor (for intake camshaft)

·

ECM


Comes on DTC stored

A255508E20
0.052,0.031 0.656,0.188 0.604,0.156 10 5 V/DIV. 0.167,0.656 0.49,0.823 0.323,0.167 10 CH1 0.156,1.448 0.479,1.615 0.323,0.167 10 CH2 0.094,0.844 0.49,1.052 0.396,0.208 10 (VV1) 0.083,1.604 0.479,1.833 0.396,0.229 10 (EV1) 3.052,0.813 3.396,0.958 0.344,0.146 10 GND 3.052,1.573 3.396,1.719 0.344,0.146 10 GND 1.271,1.865 2.021,2.042 0.75,0.177 10 20 ms./DIV.

Reference: Inspection using an oscilloscope.

HINT:
·

The correct waveform is as shown.

·

VV1 stands for the camshaft position sensor (for intake camshaft) signal, and EV1 stands for the camshaft position sensor (for exhaust camshaft) signal.



ECM Terminal Name CH1: Between VV1+ and VV1-
CH2: Between EV1+ and EV1-
Tester Range 5 V/DIV., 20 ms./DIV.
Condition Idling with warm engine


MONITOR DESCRIPTION

If no pulse signal is transmitted by the camshaft position sensor (for intake camshaft) despite the camshaft rotating, or if the rotation of the intake camshaft and the crankshaft is not synchronized, the ECM interprets this as a malfunction of the sensor.

Also, when the sensor output voltage remains at less than 0.3 V, or higher than 4.7 V for 4 seconds, the ECM stores a DTC.

MONITOR STRATEGY

Required Sensors/Components (Main) Camshaft position sensor
Required Sensors/Components (Related) Crankshaft position sensor
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the ignition switch off and wait for at least 30 seconds.

5.

Turn the ignition switch to ON and turn the GTS on.

6.

Start the engine.

7.

Idle the engine for 10 seconds or more.

8.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

9.

Read the pending DTCs.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



10.

Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

11.

Input the DTC: P0340, P0342 or P0343.

12.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System normal


ABNORMAL
·

DTC judgment completed

·

System abnormal


INCOMPLETE
·

DTC judgment not completed

·

Perform driving pattern after confirming DTC enabling conditions


N/A
·

Unable to perform DTC judgment

·

Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit



HINT:
·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.




WIRING DIAGRAM

A282201E09
0.344,2.104 0.646,2.26 0.302,0.156 10 false B21 0.323,2.281 3.344,2.5 3.021,0.219 10 false Camshaft Position Sensor (for Intake Camshaft) 5.052,2.396 5.385,2.552 0.333,0.156 10 false B33 5.51,2.385 6.365,2.635 0.854,0.25 10 false ECM 1.906,0.573 2.125,0.719 0.219,0.146 10 false VC 2.24,0.573 2.333,0.719 0.094,0.146 10 false 3 2.24,1.115 2.333,1.26 0.094,0.146 10 false 1 2.24,1.667 2.333,1.813 0.094,0.146 10 false 2 4.375,0.573 4.656,0.719 0.281,0.146 10 false 113 4.448,1.115 4.656,1.26 0.208,0.146 10 false 82 4.396,1.667 4.656,1.813 0.26,0.146 10 false 114 1.823,1.115 2.208,1.26 0.385,0.146 10 false VVI+ 1.823,1.667 2.198,1.833 0.375,0.167 10 false VVI- 4.76,0.573 5.167,0.729 0.406,0.156 10 false VCV1 4.76,1.115 5.198,1.271 0.438,0.156 10 false VV1+ 4.76,1.667 5.198,1.813 0.438,0.146 10 false VV1-

CAUTION / NOTICE / HINT

HINT:
·

If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.

·

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.



PROCEDURE

1.CHECK TERMINAL VOLTAGE (POWER SOURCE OF CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT))
A194108C81
0.313,2.198 0.74,2.458 0.427,0.26 1.958,2.542 2.365,3.083 true 0.188,0.167 0.385,0.333 0.198,0.167 10 false *a 2.333,3.115 2.594,3.26 0.26,0.146 10 false VC 0.396,2.24 1.104,2.594 0.708,0.354 10 false B21
*a Front view of wire harness connector
(to Camshaft Position Sensor (for Intake Camshaft))


a.

Disconnect the camshaft position sensor (for intake camshaft) connector.


b.

Turn the ignition switch to ON.


c.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
B21-3 (VC) - Body ground Ignition switch ON 4.5 to 5.5 V



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) - ECM)

NG

9.CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) - ECM)
2.CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) - ECM)
a.

Disconnect the camshaft position sensor (for intake camshaft) connector.


b.

Disconnect the ECM connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
B21-1 (VVI+) - B33-82 (VV1+) Always Below 1 Ω
B21-2 (VVI-) - B33-114 (VV1-) Always Below 1 Ω
B21-1 (VVI+) or B33-82 (VV1+) - Body ground Always 10 kΩ or higher
B21-2 (VVI-) or B33-114 (VV1-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

3.CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT))
A316078C02
0.438,2.719 0.75,2.917 0.313,0.198 10 false OK 0.417,0.708 0.729,0.906 0.313,0.198 10 false NG 2.229,1.094 2.542,1.292 0.313,0.198 10 false *a
*a Clearance


a.

Check the camshaft position sensor (for intake camshaft) installation condition.

OK:

Camshaft position sensor is installed correctly.



Result:
Proceed to
OK
NG



OK

4.INSPECT INTAKE CAMSHAFT

NG

SECURELY REINSTALL CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>CAMSHAFT POSITION SENSOR>INSTALLATION


4.INSPECT INTAKE CAMSHAFT
a.

Inspect the timing rotor of the intake camshaft.

OK:

Camshaft timing rotor does not have any cracks or deformation.


HINT:

Perform "Inspection After Repair" after replacing the intake camshaft.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

5.REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)

NG

REPLACE INTAKE CAMSHAFT

Click hereEngine / Hybrid System>2ZR-FE ENGINE MECHANICAL>CAMSHAFT>REMOVAL


5.REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)
a.

Replace the camshaft position sensor (for intake camshaft).

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>CAMSHAFT POSITION SENSOR>REMOVAL


Result:
Proceed to
NEXT



NEXT

6.CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342 OR P0343)
6.CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342 OR P0343)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs
50002 234

e.

Turn the ignition switch off and wait for at least 30 seconds.


f.

Start the engine.


g.

Turn the GTS on.


h.

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.


i.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


j.

Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes
50001 234

Result:
Result Proceed to
DTC P0340, P0342 or P0343 is output A
DTCs are not output B



A

7.CHECK ENGINE MECHANICAL SYSTEM

B

END

7.CHECK ENGINE MECHANICAL SYSTEM
a.

Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.


Result:
Proceed to
OK
NG



OK

8.CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342 OR P0343)

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

8.CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342 OR P0343)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs
50002 234

e.

Turn the ignition switch off and wait for at least 30 seconds.


f.

Start the engine.


g.

Turn the GTS on.


h.

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.


i.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


j.

Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes
50001 234
Result:
Result Proceed to
DTCs are not output A
DTC P0340, P0342 or P0343 is output B


HINT:

If the engine does not start, replace the ECM.




A

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


B

REPLACE ECM

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>ECM>REMOVAL


9.CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) - ECM)
a.

Disconnect the camshaft position sensor (for intake camshaft) connector.


b.

Disconnect the ECM connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
B21-3 (VC) - B33-113 (VCV1) Always Below 1 Ω
B21-3 (VC) or B33-113 (VCV1) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR