STEP 1. Using the oscilloscope, check the intake camshaft position sensor.
STEP 2. Measure the sensor supply voltage at intake camshaft position sensor connector.
(1) Disconnect the intake camshaft position sensor connector and measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal CPIN line and ground.- Voltage should be between 4.9 and 5.1 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the measured voltage between 4.9 and 5.1 volts?
Go to Step 4. Go to Step 3.
STEP 3. Check of short to ground and open circuit in CPIN line between intake camshaft position sensor connector and ECM connector.
STEP 4. Measure the power supply voltage at intake camshaft position sensor connector.
(1) Disconnect the intake camshaft position sensor connector and measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 5V line and ground.- Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is battery positive voltage (approximately 12 volts) present?
Go to Step 6. Go to Step 5.
STEP 5. Check of short to ground and open circuit in 5V line between intake camshaft position sensor connector and ECM connector.
STEP 6. Check the continuity at intake camshaft position sensor connector.
STEP 7. Check of open circuit and harness damage in DGND line between intake camshaft position sensor connector and ECM connector.
STEP 8. Check of harness damage in 5V line between ECM connector and intake camshaft position sensor connector.
STEP 9. Check of harness damage in CPIN line between ECM connector and intake camshaft position sensor connector.
STEP 10. Check the intake camshaft position sensing portion.
STEP 11. Check the trouble symptoms.
STEP 12. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 . (2) Check the diagnostic trouble code (DTC).
Is DTC P0340 set?
Retry the troubleshooting. The inspection is complete.