2.
Probe(+) : Measure waveform at the terminal 2 of CMPS.
Probe(-) : Chassis ground.
This is the inspection procedure to determine whether it is present DTC or memoried one by monitoring the current signal or by using the function of oscilloscope with Hi-scan pro.
Start engine.
Probe(+) : Measure waveform at the terminal 2 of CMPS.
Probe(-) : Chassis ground.
This figure shows the waveform measured at terminal 2 of CMPS.
Make sure there is any missing tooth or noise while changing RPM.
The waveform must be displayed regularly.
HI level at point ① should be over 4.1V and LOW level at point ② should be below 0.8V.
While cranking the engine,if the fform with scan tool is displayed similarly as shown in the figure,CMPS works properly.
In case there is no symptom and wrong data but DTC is shown
The problem may be intermittent so slightly shake the connector and harness vertically and horizontally to check if there is any data changes
If the data changes normally, the problem was intermittent so erase DTC and verify the same DTC reoccure.
Go to "Terminal and Connector inspection" procedure.
In case there is symptom and wrong data with DTC
Check open,short or connector’s connection for CMPS.
Check the deterioration of CMPS performance.
Go to "circuit inspection" procedure.
This figure shows the waveform measured at terminal 2 of CMPS.
Make sure there is any missing tooth or noise while changing RPM.
The waveform must be displayed regularly.
HI level at point ① should be over 4.1V and LOW level at point ② should be below 0.8V.
