Start engine and let vehicle idle
Install scan tool and select "current Data" mode
Monitor "CKP T/WHEELS-LO CMP" & "CKP T/WHEELS-HI CMP" parameters on the Scantool data list.
Specification :
"CKP T/WHEELS-LO CMP" : 38 +/- 4 tooth
"CKP T/WHEELS-HI CMP" : 98 +/- 4 tooth
Are "CMP FALL EDGE" & "CMP RISE EDGE" parameters near specification?
YES
Thoroughly check connectors between CKPS and ECM for loose or poor connections, bending, corrosion, contamination, deterioration, or damage. Repair or replace 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 next step.
Air gap [0.3~1.7 mm [0.012~0.067 in] = measure distance from hosing 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, readjust timing system and go to next step.
Test with a new CKP sensor and check for proper operation. If problem is corrected, replace CKP sensor and go to "Verification of Vehicle Repair" procedure