1995 TOYOTA SUPRA Service Repair Manual

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Page 2033 of 2543

TOYOTA SUPRA 1995 Service Repair Manual CIRCUIT DESCRIPTION (Contd) DIAGNOSTIC TROUBLE CODE DETECTION DRIVING PATTERN Purpose of the driving pattern. (a) To simulate diagnostic trouble code detecting condition after diagnostic trouble co

Page 2034 of 2543

TOYOTA SUPRA 1995 Service Repair Manual Connect SST (check harness ªAº). (See page EG±510) SST 09990±01000 Measure voltage between terminals HT1 of engine control module connector and body ground. Voltage: 9 Ð 14 V Check voltage betwe

Page 2035 of 2543

TOYOTA SUPRA 1995 Service Repair Manual Disconnect main heated oxygen sensor connector. Measure resistance between terminals 1 and 2 of main heated oxygen sensor connector. Resistance: 11 Ð 16  at 20°C (68°F) Check main heated oxygen

Page 2036 of 2543

TOYOTA SUPRA 1995 Service Repair Manual With the engine racing (4,000 rpm) measure waveform between terminals OX1 and E1 of engine control module. HINT: The correct waveform is as shown oscillating between approx. 0.1 V and 0.9 V If the o

Page 2037 of 2543

TOYOTA SUPRA 1995 Service Repair Manual CIRCUIT DESCRIPTION The engine coolant temperature sensor senses the coolant temperature. A thermistor built in the sensor changes its resistance value according to the coolant temperature. The lowe

Page 2038 of 2543

TOYOTA SUPRA 1995 Service Repair Manual (See page EG±510) (1) Connect SST (check harness ªAº). (See page EG±510) (2) Turn ignition switch ON Measure voltage between terminals THW and E2 of engine control module connector. Check voltage

Page 2039 of 2543

TOYOTA SUPRA 1995 Service Repair Manual DTC 24 Intake Air Temp. Sensor Circuit CIRCUIT DESCRIPTION The intake air temp. sensor is built into the mass air flow meter and senses the intake air temperature. The struc- ture of the sensor and co

Page 2040 of 2543

TOYOTA SUPRA 1995 Service Repair Manual (See page EG±510) (1) Connect SST (check harness ªAº). (See page EG±510) SST 09990±01000 (2) Turn ignition switch ON Measure voltage between terminals THW and E2 of engine control module connecto
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