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 as below.

Fig 1: Signal Waveform & Data Of CKPS And CMPS
Courtesy of HYUNDAI MOTOR CO.
1. There are 60 signals of CKPS (Including missing tooth) during the semi-cycle of CMPS #1.
2. 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 Of CKPS And CMPS
Courtesy of HYUNDAI MOTOR CO.

Fig 3: Identifying CKPS And CMPS Connector Terminals
Courtesy of HYUNDAI MOTOR CO.
Is the signal waveform normal?
YES
- Go to next step as below
NO
- Remove CKP and calculate air gap between sensor and flywheel/torque converter. Readjust as necessary and go to VERIFICATION OF VEHICLE REPAIR .
  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") subtract "B" from "A"
  - If fail to synchronize with CMP sensor, 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 .
  - 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 .