DTC P1768/Flash Code 16: Linear Solenoid

Turn ignition off. Disconnect 4-pin shift control/linear solenoid valve harness connector. Check resistance between solenoid valve terminals No. 3 (Red wire) and No. 4 (White wire). If resistance is about 5 ohms, go to next step. If resistance is not about 5 ohms, replace linear solenoid.
Disconnect PCM harness connector "E" (26-pin). Check continuity between ground and PCM harness connector "E" terminal No. 16 (White wire), then terminal No. 3 (Red wire). See Figure . If continuity does not exist, go to next step. If continuity exists, repair short in circuit between PCM harness connector "E" terminals No. 3 and 16, and linear solenoid.
Reconnect shift control/linear solenoid valve harness connector. Check resistance between PCM harness connector "E" terminals No. 3 and 16. If resistance is not about 5 ohms, go to next step. If resistance is about 5 ohms, repair loose terminal or open in circuit between PCM harness connector "E" terminals No. 3 and 16 and linear solenoid.
Disconnect PCM harness connector "A" (26-pin) and connector "E" (26-pin). Turn ignition on. Check voltage between PCM harness connector "A" terminal No. 26 (Brown/Black wire) and connector "E" terminal No. 1 (Black/Yellow wire). If voltage is present, go to next step. If voltage is not present, check for open in circuit between PCM harness connector "E" terminal No. 1 and underhood fuse/relay box. See WIRING DIAGRAMS .
Check for loose PCM connectors. Repair as necessary. If connectors are okay, substitute with a known-good PCM and recheck system. If symptom or problem goes away, replace original PCM.