Check Signal Waveform

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.

Set up an oscilloscope as follows:
- Channel A (+): Signal terminal of the CMPS #2 (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 below.

Courtesy of HYUNDAI MOTOR AMERICA
Is the signal waveform normal?
YES
- Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
NO
- Remove CMPS and check for air gap. Readjust as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
- If CKP synchronization fails, check that the crankshaft and camshaft are correctly aligned the matching marks of the pulleys. Repair or readjust as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
- Check CMPS for contamination, deterioration, or damage. Substitute with a known-good CMPS and check for proper operation. If the problem is corrected, replace CMPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure