3.
Check the CKPS current data while cranking engine.
caution
The data shown above is only for reference and there may be a little difference actually.
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.
IG KEY : ON
Start engine.
Check the CKPS current data while cranking engine.
The data shown above is only for reference and there may be a little difference actually.
Service standard
Engine running : on
Start engine.
Probe(+) : Measure waveform at the termonal 1 of CKPS
Probe(-) : Chassis ground.
This figure shows the waveform measured at terminal 2 of CKPS.
In section ① there are 2 missing teeth which is used as reference point in judging TDC.
The section ② is one tooth interval of 60 teeth which has an angle of 6 degree.
While inspecting signal waveform,check if there are missing teeth or lower signal than threshold value.
If the CKPS signal ON with scan tool,when cranking engine,CKPS 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 if the same DTC appears again.
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 CKPS.
Check the deterioration of CKPS performance.
Go to "circuit inspection" procedure.
This figure shows the waveform measured at terminal 2 of CKPS.
In section ① there are 2 missing teeth which is used as reference point in judging TDC.
The section ② is one tooth interval of 60 teeth which has an angle of 6 degree from each other.
While inspecting signal waveform,check if there are missing teeth or lower signal than threshold value.
