P0368
2GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0365: Camshaft Position Sensor "B" Circuit (Bank 1)
DTC P0365 - Camshaft Position Sensor "B" Circuit (Bank 1)
DTC P0367 - Camshaft Position Sensor "B" Circuit Low Input (Bank 1)
DTC P0368 - Camshaft Position Sensor "B" Circuit High Input (Bank 1)
DTC P0390 - Camshaft Position Sensor "B" Circuit (Bank 2)
DTC P0392 - Camshaft Position Sensor "B" Circuit Low Input (Bank 2)
DTC P0393 - Camshaft Position Sensor "B" Circuit High Input (Bank 2)
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.
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:
Exhaust Camshaft Sensor Range Check / Rationality (While starting engine):
Exhaust Camshaft Sensor Range Check / Rationality (After starting engine):
Exhaust Camshaft Sensor Range Check (Chattering, Low voltage, High voltage):
TYPICAL MALFUNCTION THRESHOLDS
Exhaust Camshaft Sensor Range Check / Rationality (While starting engine):
Exhaust Camshaft Sensor Range Check / Rationality (After starting engine):
Exhaust Camshaft Sensor Range Check (Chattering):
Exhaust Camshaft Sensor Range Check (Low voltage):
Exhaust Camshaft Sensor Range Check (High voltage):
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT: Read freeze frame data using 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 C21 or C20 VVT sensor connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)
(a) Disconnect the C21 or C20 VVT sensor for exhaust camshaft connector.
(b) Disconnect the E11 ECM connector.
(c) Measure the resistance between the wire harness side connectors.
Standard resistance:
Check for open
Check for short
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 Removal.
NEXT -- Continue to next step.
6. CHECK WHETHER DTC OUTPUT RECURS
(a) Connect Techstream to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn Techstream on.
(d) Clear the DTCs.
(e) Select the following menu items: Powertrain / Engine and ECT / Trouble Code.
(f) Read the DTCs.
Result:
HINT: If the engine does not start, replace the ECM.
B -- REPLACE ECM
A -- END
7. CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)
(a) Disconnect the C21 or C20 VVT sensor connector.
(b) Disconnect the E9 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance :
Check for open
Check for short
(d) Reconnect the VVT sensor connector.
(e) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT SENSOR - ECM)
OK -- REPLACE ECM