1995 TOYOTA SUPRA Service Repair Manual

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Page 1537 of 2543

TOYOTA SUPRA 1995 Service Repair Manual OXYGEN SENSORS INSPECTION 1. WARM UP ENGINE Allow the engine to warm up to normal operating tempera- ture. 2. INSPECT FEEDBACK VOLTAGE Connect the positive (+) tester probe of a voltmeter to termi-

Page 1538 of 2543

TOYOTA SUPRA 1995 Service Repair Manual Warm up the oxygen sensor with the engine at 2,500 rpm for approx. 120 seconds. Connect terminals TE1 and E1 of the data link connector 1. And maintain engine speed at 2,500 rpm. Check the number of t

Page 1539 of 2543

TOYOTA SUPRA 1995 Service Repair Manual 3. California only: INSPECT HEATER RESISTANCE OF MAIN HEATED OXY- GEN SENSORS (a) Disconnect the oxygen sensor connectors. (b) Using an ohmmeter, measure the resistance between the terminals +B and

Page 1540 of 2543

TOYOTA SUPRA 1995 Service Repair Manual Sub Heated Oxygen Sensor (California only) COMPONENTS FOR REMOVAL AND INSTALLATION EG±250± ENGINESFI SYSTEM (2JZ±GE)

Page 1541 of 2543

TOYOTA SUPRA 1995 Service Repair Manual OXYGEN SENSOR INSPECTION 1. INSPECT OPERATION OF SUB HEATED OXYGEN SENSOR (See circuit inspection in Engine Troubleshooting) 2. INSPECT HEATER RESISTANCE OF SUB HEATED OXYGEN SENSOR (a) Remove the d

Page 1542 of 2543

TOYOTA SUPRA 1995 Service Repair Manual FUEL PUMP ECU COMPONENTS FOR REMOVAL AND INSTALLATION FUEL PUMP ECU INSPECTION 1. REMOVE FUEL PUMP ECU 2. INSPECT FUEL PUMP ECU (See circuit inspection in Engine Troubleshooting) 3. REINSTALL FUEL

Page 1543 of 2543

TOYOTA SUPRA 1995 Service Repair Manual ENGINE CONTROL MODULE (ECM) COMPONENTS FOR REMOVAL AND INSTALLATION ± ENGINESFI SYSTEM (2JZ±GE)EG±253

Page 1544 of 2543

TOYOTA SUPRA 1995 Service Repair Manual ECM INSPECTION 1. DISCONNECT NEGATIVE (±) TERMINAL CABLE FROM BATTERY 2. REMOVE SCUFF PLATE 3. REMOVE ECM PROTECTOR (a) Take out the front side of the floor carpet. (b) Remove the 2 nuts and ECM
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