{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"ATTE","section_name":"A340 Automatic Trans (GTE)","page":7,"pages_in_section":118,"title":"Electronic Control System","section_header":"A340E (2JZ—GTE) Automatic Transmission — Operation","ocr_text":"ELECTRONIC CONTROL SYSTEM\nThe electronic control system for the A340E automatic transmission provides extremely precise control of\nthe gear shift timing and lock–up timing in response to driving conditions as sensed by various sensors\nlocated throughout the vehicle and in response to the engine's running condition.\nAt the same time, the ECM control reduces vehicle squat when the vehicle starts out and gear shift shock.\nThe electronic control system is also equipped with a self diagnosis system which diagnoses malfunctions\nfor the vehicle to continue functioning when a malfunction occurs.\n\nCONSTRUCTION\nThe electronic control system can be broadly divided onto three groups; the sensors, ECM and actuators.\n\nSENSORS\n\nNo. 1 Vehicle Speed Sensor\nNo. 2 Vehicle Speed Sensor\nO/D Direct Clutch Speed Sensor r\nCrankshaft Position Sensor\nCamshaft Position Sensor No.1, No.2 2\nPark/Neutral Position Switch\n  Neutral Start Signal\n  Shift lever Position Signal\nMain (Sub) — throttle Position Sensor\n  Idling Signal\n  Throttle Position Signal\nEngine Coolant temp. Sensor\nA/T Fluid Temp. Sensor\nO/D Main Switch\nCruise Control ECU\nKick–Down Switch\nStop Light Switch\nPattern Select Switch\n\nECM\n\nSP1\nSP2\nNCO\nNE\nG1\nG2\nNSW\nR,2,L\nIDL\nVTA\nTHW\nOIL\nOD2\nOD1\nKD\nSTP\nM\n+B\nBattery\n\nACTUATORS\n\nS1\nS2\nSLU\nSLN\nSLT\n\nNo.1 Solenoid Valve\nNo.2 Solenoid Valve\nNo.3 Solenoid Valve\nNo.4 Solenoid Valve\nNo.5 Solenoid Valve\n\nEngine Torque Control (ESA)\nIGT1,IGT2\nIGF1,IGF2\nIgniters\nIgnition Coils\nDistributors\nSpark Plugs\n\nOD2\nO/D OFF Indicator Light\n(Diagnostic Trouble Code\nDisplay)\n\nEFI\nTRC\nTRAC 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}