STEP 1. Using scan tool (M.U.T.-III), check data list item 2: Crankshaft Position Sensor.
STEP 2. Using the oscilloscope, check the crankshaft position sensor.
STEP 3. Measure the sensor supply voltage at crankshaft position sensor harness side connector.
(1) Disconnect the crankshaft position sensor connector and measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal SGT 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 6. Go to Step 4.
STEP 4. Measure the sensor supply voltage at ECM connector by using power plant ECU check harness special tool MB992110.
(1) Disconnect all ECM connectors. Connect the power plant ECU check harness special tool MB992110 between the separated connectors.
(2) Disconnect the crankshaft position sensor connector.
(3) Turn the ignition switch to the "ON" position.
(4) Measure the voltage between terminal SGT and ground.- Voltage should be between 4.9 and 5.1 volts.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Is the measured voltage between 4.9 and 5.1 volts?
Repair or replace the connector(s), or check and repair the harness of open circuit in SGT line between crankshaft position sensor connector and ECM connector. Then go to Step 14. Go to Step 5.
STEP 5. Check of short circuit to ground in SGT line between crankshaft position sensor connector and ECM connector.
STEP 6. Measure the power supply voltage at crankshaft position sensor harness side connector.
(1) Disconnect the crankshaft 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 8. Go to Step 7.
STEP 7. Check of short to ground and open circuit in 5V line between crankshaft position sensor connector and ECM connector.
STEP 8. Check the continuity at crankshaft position sensor harness side connector.
STEP 9. Check of open circuit and harness damage in SGTE line between crankshaft position sensor connector and ECM connector.
STEP 10. Check of harness damage in 5V line between ECM connector and crankshaft position sensor connector.
STEP 11. Check of harness damage in SGT line between ECM connector and crankshaft position sensor connector.
STEP 12. Check the crankshaft position sensing ring.
STEP 13. Using scan tool (M.U.T.-III), check data list item 2: Crankshaft Position Sensor.
STEP 14. 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 22 . (2) Check the diagnostic trouble code (DTC).
Is DTC P0335 stored?
Retry the troubleshooting. The inspection is complete.