P0367
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 Variable Valve Timing (VVT) sensor consists of a magnet and MRE (Magneto 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 MRE, which affects the magnet. As a result, the resistance of the MRE 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.
* Reference: Inspection using an oscilloscope
HINT
- The correct waveform is as shown.
- EV1+ and EV2+ stand for the VVT sensor signal, and NE+ stands for the CKP 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:
All::
P0367, P0392 (Low voltage), P0368, P0393 (High voltage):
P0367, P0392 (Low voltage), P0368, P0393 (High voltage)::
P0365, P0390 (Engine running):
P0365, P0390 (Engine running)::
TYPICAL MALFUNCTION THRESHOLDS
P0367, P0392 (Low voltage):
P0367, P0392 (Low voltage)::
P0368, P0393 (High voltage):
P0368, P0393 (High voltage)::
P0365, P0390 (Engine running):
P0365, P0390 (Engine running)::
COMPONENT OPERATING RANGE
CONFIRMATION DRIVING PATTERN
* Connect the Techstream to the DLC3.
* Turn the ignition switch to ON and turn the Techstream on.
* Clear the DTCs (even if no DTCs are stored, perform the Clear DTC procedure) DTC Check / Clear.
* Turn the ignition switch off and turn the Techstream off.
* Turn the ignition switch to ON and turn the Techstream on [A].
* Start the engine.
* Idle the engine for 10 seconds [B].
* Enter the following menus: Powertrain / Engine / Utility / All Readiness.
* Input the DTC: P0365, P0367, P0368, P0390, P0392 or P0393.
* Check the DTC judgment result [C].
HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [B] and [C] again.
* If the test result is UNKNOWN, enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
* Read Pending DTCs.
HINT
If a pending DTC is output, the system is malfunctioning.
* If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs DTC Check / Clear.
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
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 Freeze Frame Data.
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE)
(a) Disconnect the VVT sensor connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
(d) Reconnect the VVT sensor connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)
(a) Disconnect the 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):
Standard resistance (Check for short):
(d) Reconnect the VVT sensor connector.
(e) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK VVT SENSOR FOR EXHAUST CAMSHAFT (SENSOR INSTALLATION)
(a) Check the VVT sensor installation condition.
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
(a) Replace the VVT sensor Removal.
NEXT -- Continue to next step.
6. CHECK WHETHER DTC OUTPUT RECURS
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs DTC Check / Clear.
(e) Select the following menu items: Powertrain / Engine / Trouble Code.
(f) Read the DTCs.
Result:
HINT
If the engine does not start, replace the ECM.
B -- REPLACE ECM Removal
A -- END