Verification of Vehicle Repair
Verification Procedure

- Check the CKP and CMP sensor wavefoam at the same time

caution

If the signal of CKP sensor keeps its consistency, then it is hard to find the starting and ending points.

Therefore, two teeth are taken out from the crank one called long tooth(or missing tooth) and the other called short tooth. By using the long tooth, Top dead center is found. RPM is calculated by the number of long tooth at one revolution of engine. When excessive engine oil is filled up, for instance 2 times of normal amount, the engine can be run more than 6000 rpm (ie, dieseling) in this case error can be memorized but this is neglected.

1.

Connect the CH A,B probe of scan tool to the CKP terminal 1 or 2 and the CMP terminal 2 individually after turning the ignition switch OFF and then start the engine

2.

Check the CKP and the CMP signal waveform while idling.

3.

IS THERE THE SIGNAL WAVEFORM PROPERLY DISPLAYED ?

YES

a.

Make sure there is no the DTC in the dignostic trouble codes menu

NO

a.

Recheck for the wiring/harness of CKP and CMP sensor

b.

Go to "Component Inspection" procedure

WAVEFORM ANALYSIS

The given data is the normal waveform of the crankshaft position sensor (CKPS) and the Camshaft position sensor (CMPS). The CKP sinusoidal signal generates continuosly except 2 missing teeth. but the CMP squre waveform signal is output even when the CMP sensor meets the dowel pin of camshaft. If the waveform pattern becomes distorted or generated no signal while cranking or idling, replace the CKP or the CMP

4.

MONITORING FOR PENDING DTC SET ?

YES

a.

Go to the applicable troubleshooting procedure.

NO

a.

System OK

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