Component Inspection

Check CKPS.
1. Key "ON". (Don't disconnect sensors.)
2. Select "vehicle scopemeter" in the menu, and connect channel A of scantool with terminal 1 of CKPS harness connector.
3. Engine start. And check the signal waveforms.
  SPECIFICATION:
  
  Fig 1: CKPS And CMPS Signal Waveform Graph
4. Is the measured signal waveform O.K?
  YES : --> Go to "Check ECM/PCM" as follows.
  
  NO : --> Substitute with a known - good CKPS and check for proper operation.
  
  --> If the problem is corrected, replace CKPS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check ECM/PCM.
1. IG "OFF".
2. Connect scantool and Engine "ON".
3. Select simulation function on scantool.
4. Simulate frequency (Hz) at terminal 1 of CKPS signal connector.
  
  Fig 2: Scantool Display - Simulation Of Frequency At Terminal 1 Of CKPS
5. Does the signal value of CKPS change according to simulation frequency?
  YES : --> Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  
  NO : --> Substitute with a known - good ECM/PCM and check for proper operation.
  
  --> If the problem is corrected, replace ECM/PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.