Trouble No. 2 Shift point too high or too low Warm up engine Coolant temp.: 80°C (176°F) ATF temp.: 50 – 80°C (122 – 176°F) | ↓ Connect a voltmeter to check connector terminals T↑ and E₁. Does T↑ terminal voltage vary with changes in throttle opening? Yes No | | | ↓ | Is voltage between ECT ECU terminals BK No → Brake signal | and GND as follows? faulty | OV : Brake pedal released | 12V : Brake pedal depressed | | | Yes | | | ↓ | • ECU power source and ground faulty | • Throttle position signal faulty | • T↑ terminal wire open or short | ↓ Check voltage between ECT ECU terminals OK → • Faulty ECT ECU PWR and GND. • Faulty transmission Power pattern : 12V Normal pattern : 1V NG → Faulty pattern select switch system