Component Inspection

■ Check signal waveform of CKPS 

1. 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
2. Start the engine and check for signal waveform compared with reference waveform below.

   Specification:  Refer to SIGNAL WAVEFORM & DATA 

3. 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 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") 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 " 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.