DTC P1717: A/T Drive Range (Park/Neutral Position) Signal Circuit Malfunction

Turn ignition on. Measure voltage (backprobe) between ground and PCM harness connector "C", terminal No. 15 (Gray/Red wire). If reading is 10-14 volts with gear selector in any position, go to next step. If reading is 10-14 volts with gear selector in "R", "D", "2" or "L" position, check Transmission Range Sensor (TRS) and circuits. See TRANSMISSION SERVICE & REPAIR article. If reading is 0-1 volt with gear selector in "R", "D", "2" or "L" position, problem is intermittent or due to a faulty PCM. See TESTS W/O CODES article.
Turn ignition off. Disconnect TCM harness connectors. Turn ignition on. Measure voltage between ground and terminal No. 10 (Gray/Red wire) at TCM harness connector. If reading is 10-14 volts, go to next step. If reading is not 10-14 volts, check Gray/Red wire between PCM and TCM for an open or poor connection. If wire is okay, replace PCM.
Check for poor connection at TRS, misadjusted or faulty TRS, misadjusted select cable, or open Black/White wire between TRS and ignition switch. If connections and adjustments are okay, replace TCM. Retest system.