Diagnosis & Repair
WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect CKP sensor harness connector. Measure resistance between CKP sensor connector terminals No. 1 (Green wire) and No. 2 (Red wire). Resistance should be 1630-2740 ohms (cold sensor) or 2065-3225 ohms (hot sensor). If resistance is not as specified, replace CKP sensor. If resistance is as specified, go to next step.
- Check for open or short in wiring between ECM and CKP sensor. See WIRING DIAGRAMS article. If problem exists, repair wiring as necessary. If problem does not exist, remove and inspect CKP sensor. Also, inspect signal plate. Replace CKP sensor and/or signal plate as necessary. If both components are okay, replace ECM.