TROUBLESHOOTING FLOW-CHART Trouble No. 1 No Shifting Warm up engine Coolant temp.: 80°C (176°F) ATF temp.: 50 – 80°C (122 – 176°F) | v Connect a voltmeter to check connector terminals T1 and E1. Does T1 terminal voltage vary with changes in throttle opening? Yes No | | v v Is voltage between ECT ECU terminals No ——> Brake signal BK+ and BK– as follows? faulty 0V : Brake pedal released 12V : Brake pedal depressed | Yes | v • ECU power source and ground faulty • Throttle position signal faulty • T1 terminal wire open or short | v Disconnect ECT ECU connector and road No ——> Transmission faulty test. Does the transmission operate in the respective gear when in the following ranges while driving? D range ..... Overdrive 2 range ..... 3rd gear L range ..... 1st gear Yes Continued on page AT-24 | v