2) Check Input Signal Circuit

Turn ignition off and disconnect ECM harness connector. Verify harness continuity between CKP sensor connector terminal "d" (Green/Black wire) and ECM connector terminals No. 41 and 51 (120-degree signal), and between terminal "c" (Green/Yellow wire) and ECM terminals No. 42 and 52 (one degree signal). See Figure , Figure and Figure . If continuity is present, go to next step. If continuity is not present, repair harness or connectors as necessary.