P0368

2GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0365, P0367, P0368, P0390, P0392, P0393: Camshaft Position Sensor "B" Circuit (Bank 1)


DESCRIPTION

The exhaust camshaft's VVT sensor consists of a magnet and magnetic resistance element.

The exhaust camshaft has a sensor plate with 3 teeth on its outer circumference.

When the exhaust camshaft rotates, changes occur in the air gaps between the 3 teeth and magnetic resistance element, which affects the magnet. As a result, the resistance of the magnetic resistance element material fluctuates. The VVT sensor converts the exhaust camshaft rotation data to pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM.





MONITOR DESCRIPTION

If no signal is transmitted by the VVT (for exhaust camshaft) sensor despite the engine revolving, or the rotations of the exhaust camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All:





P0365 and P0390: VVT Sensor Verify Pulse Input





P0367, P0392, P0368, P0393: VVT Sensor Range Check (Low Voltage, High Voltage)





TYPICAL MALFUNCTION THRESHOLDS

P0365 and P0390: VVT Sensor Verify Pulse Input





P0367 and P0392: VVT Sensor Range Check (Low Voltage)





P0368 and P0393: VVT Sensor Range Check (High Voltage)





COMPONENT OPERATING RANGE





WIRING DIAGRAM

Refer to DTC P0335 P0335.

CONFIRMATION DRIVING PATTERN

1. Connect the Techstream to the DLC3.

2. Turn the ignition switch on (IG) and turn the Techstream on.

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

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

5. Turn the ignition switch on (IG) and turn the Techstream on.

6. Start the engine.

7. Idle the engine for 10 seconds or more [A].

8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].

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: P0365, P0367, P0368, P0390, P0392 or P0393.

12. Check the DTC judgment result.





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 UNKNOWN, perform steps [A] through [B] again.

13. If no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

HINT
* If a permanent DTC is output, the system is malfunctioning.
* If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

HINT
* Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
* Bank 2 refers to the bank that does not include the No. 1 cylinder.
* Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

PROCEDURE

1. CHECK VVT SENSOR FOR EXHAUST CAMSHAFT (SENSOR POWER SOURCE)

(a) Disconnect the exhaust camshaft VVT sensor connector.





(b) Turn the ignition switch on (IG).

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

Standard voltage:

Bank 1
Bank 2










Text in Illustration





(d) Reconnect the VVT sensor connector.

NG -- CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)

(a) Disconnect the exhaust camshaft VVT sensor connector.

(b) Disconnect the ECM connector.

(c) Measure the resistance between the wire harness side connectors.

Standard resistance (Check for open):

Bank 1
Bank 2










Standard resistance (Check for short):

Bank 1
Bank 2










(d) Reconnect the VVT sensor connector.

(e) Reconnect the ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT SENSOR - ECM)
OK -- Continue to next step.

3. CHECK VVT SENSOR FOR EXHAUST CAMSHAFT (SENSOR INSTALLATION)

(a) Check the VVT sensor installation.





OK:

Sensor is installed correctly.

NG -- REPAIR OR REPLACE VVT SENSOR
OK -- Continue to next step.

4. CHECK EXHAUST CAMSHAFT

(a) Check the teeth of the camshaft.

NG -- REPLACE EXHAUST CAMSHAFT
OK -- Continue to next step.

5. REPLACE VVT SENSOR (FOR EXHAUST CAMSHAFT)

(a) Replace the VVT sensor Components.

NEXT -- Continue to next step.

6. CHECK WHETHER DTC OUTPUT RECURS

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch on (IG).

(c) Turn the tester on.

(d) Clear the DTCs.

(e) Turn the ignition switch off.

(f) Turn the ignition switch on (IG) and turn the Techstream on.

(g) Start the engine.

(h) Idle the engine for 10 seconds or more.

(i) Select the following menu items: Powertrain / Engine and ECT / Trouble Code / Pending.

(j) Read the DTCs.

Result:





HINT
If the engine does not start, replace the ECM.

B -- REPLACE ECM Components

A -- END

7. CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)

(a) Disconnect the exhaust camshaft VVT sensor connector.

(b) Disconnect the ECM connector.

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

Standard resistance (Check for open):

Bank 1
Bank 2










Standard resistance (Check for short):

Bank 1
Bank 2










(d) Reconnect the VVT sensor connector.

(e) Reconnect the ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT SENSOR - ECM)

OK -- REPLACE ECM Components