Check Input Signal Circuit

Turn ignition switch to OFF position. Disconnect ECM and A/T control unit harness connectors. Using an ohmmeter, check continuity between ECM harness connector terminal No. 7 and A/T control unit harness connector terminal No. 13 (Purple wire). If no continuity exists, repair open in Purple wire. If continuity exists, disconnect and reconnect harness connectors in circuit and perform FINAL CHECK .