1995 TOYOTA SUPRA Service Repair Manual

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Page 1017 of 2543

TOYOTA SUPRA 1995 Service Repair Manual (See page IN±30). Check voltage between terminal NEO of TRAC ECU and body ground. Remove TRAC ECU with connectors still con- nected. Repair or replace harness or connector. Check and replace TRAC ECU

Page 1018 of 2543

TOYOTA SUPRA 1995 Service Repair Manual DTC 45 46 Main Throttle Position Sensor Circuit CIRCUIT DESCRIPTION This circuit is not directly related to the TRAC control, but as it has an influence on TRAC control when trouble occurs in this cir

Page 1019 of 2543

TOYOTA SUPRA 1995 Service Repair Manual INSPECTION PROCEDURE HINT: The main throttle position sensor signal is transmitted to the TRAC ECU from ECM, so if an error occurs at the engine side, the TRAC ECU also detects it. If diagnostic troub

Page 1020 of 2543

TOYOTA SUPRA 1995 Service Repair Manual (See page IN±30). page IN±30). (See (See page IN±30). (See page EG±554). Check for open and short in harness and connector between terminal IDL1 of TRAC ECU and main throttle position sensor with

Page 1021 of 2543

TOYOTA SUPRA 1995 Service Repair Manual DTC 47 48 Sub±Throttle Position Sensor Circuit CIRCUIT DESCRIPTION This sensor detects the opening angle of the sub±throttle valve and sends the appropriate signals to the ECU. If a trouble signal i

Page 1022 of 2543

TOYOTA SUPRA 1995 Service Repair Manual INSPECTION PROCEDURE HINT: The sub±throttle position sensor signal is transmitted to the TRAC ECU from ECM, so if an error occurs at the engine side, the TRAC ECU also detects it. If diagnostic troub

Page 1023 of 2543

TOYOTA SUPRA 1995 Service Repair Manual (See page IN±30). (See page IN±30). (See page IN±30). (See page EG±294). Check for open and short in harness and connector between terminal IDL2 of TRAC ECU and main throttle position sensor with

Page 1024 of 2543

TOYOTA SUPRA 1995 Service Repair Manual Check the diagnostic trouble code for the engine (See page EG±491). Check for short in all the harness and ECU connected to malfunction indicator light. Repair engine control system according to the
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