P0365
1GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0365, P0367, P0368, P0390, P0392, P0393: Camshaft Position Sensor "B" Circuit (Bank 1)
DESCRIPTION
The exhaust camshaft's Variable Valve Timing (VVT) sensor (EV1, 2 signal) consists of a magnet and MRE (Magneto Resistance Element).
The exhaust camshaft has a timing rotor for the VVT sensor. When the camshaft rotates, changes occur in the air gaps between the timing rotor and MRE element, which affect the magnetic field. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the camshaft rotation data to pulse signals, and uses the pulse signals to determine the camshaft angle, which it sends to the ECM. Then the ECM uses this data to control fuel injection duration, injection timing and the VVT system.
EV1, EV2 and NE signal waveforms
- Inspection using an oscilloscope
HINT
* The correct waveform is shown above.
* EV1+ and EV2+ stand for the VVT sensor (for exhaust side) signal, and NE+ stands for the crankshaft position sensor signal.
MONITOR DESCRIPTION
If no signal is transmitted by the VVT sensor despite the engine revolving, or the rotations of the camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
All
P0365, P0390 VVT Sensor Verify Pulse Input
P0367, P0368, P0392, P0393 VVT Sensor Range Check (Low Voltage, High Voltage)
TYPICAL MALFUNCTION THRESHOLDS
P0365, P0390 VVT Sensor Verify Pulse Input
P0367, P0392 VVT Sensor Range Check (Low Voltage)
P0368, P0393 VVT Sensor Range Check (High Voltage)
COMPONENT OPERATING RANGE
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear the 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 to ON 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 DTCs.
HINT
* If a DTC is output, the system is malfunctioning.
* If a 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] and [B] again.
13. If no 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.
WIRING DIAGRAM
Refer to DTC P0335 P0335.
INSPECTION PROCEDURE
HINT
Read freeze frame data using the Techstream. Freeze frame data record the engine condition when malfunctions are detected. 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. INSPECT ECM TERMINAL VOLTAGE
(a) Inspect the ECM using an oscilloscope.
(1) While the engine is idling, check the waveform between the terminals of the ECM connector.
OK:
Text in Illustration
NG -- CHECK VVT SENSOR (FOR EXHAUST SIDE) (SENSOR POWER SOURCE)
OK -- CHECK FOR INTERMITTENT PROBLEMS Check for Intermittent Problems
2. CHECK VVT SENSOR (FOR EXHAUST SIDE) (SENSOR POWER SOURCE)
(a) Disconnect the VVT sensor (for exhaust side) connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
NG -- CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR EXHAUST SIDE) - ECM)
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR EXHAUST SIDE) - ECM)
(a) Disconnect the VVT sensor (for exhaust side) connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK SENSOR INSTALLATION (VVT SENSOR (FOR EXHAUST SIDE))
(a) Check the VVT sensor (for exhaust side) installation.
OK:
VVT sensor (for exhaust side) is installed correctly.
NG -- SECURELY REINSTALL VVT SENSOR (FOR EXHAUST SIDE) Installation
OK -- Continue to next step.
5. INSPECT CAMSHAFT SUB-ASSEMBLY (TIMING ROTOR)
(a) Check the timing rotor of the exhaust camshaft.
OK:
Camshaft timing rotor does not have any cracks or deformation.
NG -- REPLACE CAMSHAFT SUB-ASSEMBLY (FOR EXHAUST SIDE) Removal
OK -- Continue to next step.
6. REPLACE VVT SENSOR (FOR EXHAUST SIDE)
(a) Replace the VVT sensor (for exhaust side) Removal.
NEXT -- Continue to next step.
7. CHECK WHETHER DTC OUTPUT RECURS (P0365, P0367, P0368, P0390, P0392 OR P0393)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Refer to the confirmation driving pattern.
(f) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(g) Read the DTCs.
Result
HINT
If the engine does not start, replace the ECM.
B -- END
A -- REPLACE ECM Removal
8. CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR EXHAUST SIDE) - ECM)
(a) Disconnect the VVT sensor (for exhaust side) connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM Removal