Component Inspection

Set up an oscilloscope as follows:
Channel A (+): Signal terminal of the CMPS #1 (back probe), (-): ground

Channel B (+): Signal terminal of the CKPS (back probe), (-): ground
Start the engine and check for signal waveform compared with reference waveform .

Fig 1: CKPS & CMPS Signal Waveform
Courtesy of KIA MOTORS AMERICA, INC.

There are 60 signals of CKPS (Including missing tooth) during the semi-cycle of CMPS #1.

There are 3~5 signals of CKPS between the switching point of CMPS #1 and the missing tooth of CKPS.

Fig 2: Checking Signal Waveform Between CKPS & CMPS Signal Terminals
Courtesy of KIA MOTORS AMERICA, INC.
Is the signal waveform normal?
YES
- Go to next Inspection procedure
NO
- Remove CKP and calculate air gap between sensor and flywheel/torque converter. Readjust as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NOTE:
  Air gap [0.3~1.7 mm [0.012~0.067 in] = measure distance from housing to teeth on flywheel/torque converter (measurement "A") , and from mounting surface on sensor to sensor tip (measurement "B") , then subtract "B" from "A"
  - If synchronization with CMPS sensor fails, check that the matching marks on the crankshaft and camshaft pulleys are correctly aligned. Repair or readjust as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure
  - Check CKPS for contamination, deterioration, or damage. Substitute with a known-good CKPS and check for proper operation. If the problem is corrected, replace CKPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure