STEP 1. Using scan tool (M.U.T.-IIISE), 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 on the power supply mode of the electric motor switch.
(3) Measure the voltage between terminal SGT and ground.- Voltage should be between 4.9 and 5.1 volts.
(4) Turn off the power supply mode of the electric motor switch.
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 on the power supply mode of the electric motor switch.
(4) Measure the voltage between terminal SGT and ground.- Voltage should be between 4.9 and 5.1 volts.
(5) Turn off the power supply mode of the electric motor switch.
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 on the power supply mode of the electric motor switch.
(3) Measure the voltage between terminal 5V line and ground.- Voltage should be 12V starter battery positive voltage.
(4) Turn off the power supply mode of the electric motor switch.
Is 12V starter 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 trouble symptoms.
STEP 13. Using scan tool (M.U.T.-IIISE), 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 4 . (2) Check the diagnostic trouble code (DTC).
Is DTC P0335 set?
Retry the troubleshooting. The inspection is complete.