No 1-2 &/Or 2-3 Upshift

Check Throttle Position (TP) sensor circuit, No. 1 and No. 2 shift solenoid circuit, Vehicle Speed Sensor (VSS) circuit, Electronic Control Transmission Electronic Control Unit (ECT ECU), 1-2 shift valve, 2-3 shift valve, 2nd brake, direct clutch and No. 1 one-way clutch.