TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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ATTE/A340 Automatic Trans (GTE)64 / 118
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Chapter 1. Electronic Circuit — MK4 Supra A340 Automatic Trans (GTE), page 64
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AT2–64 A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING Chapter 1. Electronic Circuit See Page AT2–72 AT2–75 AT2–79 AT2–82 AT2–85 AT2–89 AT2–97 Suspect Area No.1 Vehicle speed sensor circuit No.4 solenoid circuit No.2 Vehicle speed sensor circuit No.1, No.2 solenoid circuit No.3 solenoid circuit O/D direct clutch speed sensor circuit (Sub)–throttle position sensor circuit Symptom Vehicle does not move in any forward position and reverse position Vehicle does not move in particular position or positions No up–shift 1st → 2nd 3 4 1 2 2nd → 3rd 3 4 1 2 3rd → O/D 3 4 2 5 No down–shift O/D → 3rd 3 4 1 2 3rd → 2nd 3 4 1 2 2nd → 1st 3 4 1 2 No lock–up 3 4 1 2 No lock–up off 3 4 1 2 Shift point too high or too low 3 4 1 Up–shifts to 2nd while in L position Up–shifts to 3rd while in L position Up–shifts to O/D from 3rd while O/D switch is OFF Up–shifts to O/D from 3rd while engine is cold Harsh engagement N → D 3 1 4 5 Lock–up 3 4 1 2 Any driving position 6 3 7 1 4 5 Slip or Shudder Forward and reverse Any particular position No engine braking Poor acceleration 4 5 6 7 3 No kick–down 3 4 2 *No pattern select Large shift shock or Engine stalls when starting off or stopping. 1 * The automatic transmission in not shifted into the manual mode when the automatic transmission fluid temperature is too high.