STEP 1. Using the oscilloscope, measure output wave pattern at crankshaft position sensor and camshaft position sensor.
(1) Disconnect the crankshaft position sensor connector and connect the test harness special tool MB991709 between the separated connectors.
(2) Connect the oscilloscope probe to the crankshaft position sensor side connector terminal SGT.
(3) Disconnect the camshaft position sensor connector, and connect test harness special tool MB991709 between the separated connectors.
(4) Connect the oscilloscope probe to the camshaft position sensor side connector terminal CPI.note | When measuring with the ECM side connector, disconnect all ECM connectors. Connect the check harness special tool MB992110 between the separated connectors. Then connect the oscilloscope probe to the check harness connector terminal SGT (crankshaft position sensor) and terminal CPI (camshaft position sensor). |
(5) Set the vehicle to the continuous idling mode.
(6) Check the waveform.- The waveforms should be displayed on inspection procedure using an oscilloscope (Refer to ).
(7) Turn off the power supply mode of the electric motor switch.
Is the waveform normal?
Go to Step 2. Go to Step 3.