Component Inspection
- Reconnect the CKPS and ECM connectors.
- Set up an oscilloscope as follows:
Channel A (+): terminal 2 of the CKPS (back probe), (-): ground
Channel B (+): terminal 2 of the CMPS (back probe), (-): ground
- Start the engine and check for signal waveform compared with reference waveform as below.
- Is the signal waveform normal?
YES
- Check for poor connection between ECM 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 air gap is OK, 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