DTC P0745: Throttle Pressure Control Solenoid: Notes

NOTE: DTC P0745 will set if throttle pressure control solenoid or its circuit is open or shorted.

Turn ignition off. Place gear selector lever in "P" position. Turn ignition on. Using a DVOM, measure voltage (backprobe) between TCM harness connector E26, terminals No. 1 (Gray/Black wire), and No. 2 (Black/Red wire). Observe DVOM as accelerator pedal is depressed. If voltage decreases as throttle opens, check for an intermittent problem or faulty TCM. See DIAGNOSTIC AIDS . If voltage did not decrease, go to next step.
Turn ignition off. Disconnect throttle pressure control solenoid harness connector at transaxle. Using a DVOM, measure resistance between solenoid terminals, then measure resistance between transaxle case and specified solenoid terminal. See Figure. If resistance is 3.3-3.7 ohms at 68°F (20°C) between terminals, and infinity between transaxle case and solenoid terminal, go to next step. If resistance is not as specified, solenoid or lead wire is faulty. Repair as necessary.
Check Gray/Red wire or Gray/Black wire between solenoid and TCM for an open or short to ground. Repair as necessary, If wires are okay, substitute TCM with a known-good unit. Retest system.