TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
p.010
AT/Automatic Transmission11 / 144
p.012
General Troubleshooting (Cont'd) — MK3 Supra Automatic Transmission, page 11
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General Troubleshooting (Cont'd) Problem | Possible cause | Remedy | Page No lock-up in 2nd, 3rd or O/D | Electronic control faulty | Inspect electronic control | AT-21 | Valve body faulty | Inspect valve body | AT-109 | Solenoid valve faulty | Inspect solenoid valve | AT-30 | Transmission faulty | Disassemble and inspect transmission | AT-46 Harsh down-shift | Throttle cable out of adjustment | Adjust throttle cable | AT-19 | Throttle cable and cam faulty | Inspect throttle cable and cam | AT-136 | Accumulator pistons faulty | Inspect accumulator pistons | AT-135, 136 | Valve body faulty | Inspect valve body | AT-109 | Transmission faulty | Disassemble and inspect transmission | AT-46 No down-shift when coasting | Valve body faulty | Inspect valve body | AT-109 | Solenoid valve faulty | Inspect solenoid valve | AT-30 | Electronic control faulty | Inspect electronic control | AT-21 Down-shift occurs too quickly or too late while coasting | Throttle cable faulty | Inspect throttle cable | AT-19 | Valve body faulty | Inspect valve body | AT-109 | Transmission faulty | Disassemble and inspect transmission | AT-46 | Solenoid valve faulty | Inspect solenoid valve | AT-30 | Electronic control faulty | Inspect electronic control | AT-21 No O/D-3, 3-2 or 2-1 kick-down | Solenoid valve faulty | Inspect solenoid valve | AT-30 | Electronic control faulty | Inspect electronic control | AT-21 | Valve body faulty | Inspect valve body | AT-109 No engine braking in 2 or L range | Solenoid valve faulty | Inspect solenoid valve | AT-30 | Electronic control faulty | Inspect electronic control | AT-21 | Valve body faulty | Inspect valve body | AT-109 | Transmission faulty | Disassemble and inspect transmission | AT-46 Vehicle does not hold in P | Manual linkage out of adjustment | Adjust linkage | AT-19 | Parking lock pawl cam and spring faulty | Inspect cam and spring | AT-42