MULTIPORT
On-Vehicle Inspection of MFI
FUEL INJECTION Components
SENSOR INSPECTION
Refer to
INSTALLATION
Refer to
HEATED OXYGEN SENSOR
1996 models>
Electromotive
Theoretical A/F
A B C D
Harness side
connector
Engine control module connector
OPERATION
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The heated oxygen sensor senses the oxygen concentration in exhaust gas, converts it into a voltage
and inputs it to the engine control module.
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The heated oxygen sensor outputs about
1
V when the air-fuel ratio is richer than the theoretical
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ratio and outputs about 0 V when the ratio is leaner (higher oxygen concentration in exhaust gas).
The engine control module controls the fuel injection ratio based on this signal so that the air-fuel
ratio may be kept at the theoretical ratio.
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The battery voltage is supplied to the heated oxygen sensor through the MFI relay. Therefore, the
sensor element is heated by the heater so that the heated oxygen sensor remains responsive even
when the exhaust temperature is low.
TSB Revision
Summary of Contents for 1992 3000GT
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Page 118: ...13A 14 MULTIPORT FUEL INJECTION Special Tools TSB Revision...
Page 394: ...NOTES...
Page 460: ...NOTES...
Page 532: ...NOTES...
Page 536: ...21 4 CLUTCH Troubleshooting Excessive wear of clutch disc facin I LJ 1 TSB Revision...
Page 556: ...NOTES...
Page 570: ...22 14 MANUAL TRANSAXLE AWD Special Tools SPECIAL TOOLS Oil seal installer TSB Revision...
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Page 600: ...I I I LJ LJ I L...
Page 609: ...AUTOMATIC TRANSAXLE Troubleshooting 23 I 9 L L 1 TSB Revision...
Page 668: ...NOTES...
Page 692: ...NOTES...
Page 752: ...33 2 NOTES...
Page 766: ...NOTES...
Page 809: ...REAR SUSPENSION AWD Special Tools 34 23 B lMB990244 i TSB Revision...
Page 810: ...34 24 REAR SUSPENSION AWD Troubleshooting TROUBLESHOOTING TSB Revision...
Page 946: ...NOTES...
Page 958: ...NOTES...
Page 960: ...37 2...
Page 964: ...37A 4 STEERING Snecial Tools SPECIAL TOOLS Preload socket General service TSB Revision...
Page 994: ...NOTES...
Page 1006: ...NOTES...
Page 1068: ...42 62 BODY Sunroof SUNROOF SWITCH CONTINUITY CHECK 18FO403 TSB Revision...
Page 1070: ...NOTES I...
Page 1103: ...52 1 i INTERIOR CONTENTS INTERIOR 52A SUPPLEMENTAL RESTRAINT SYSTEM SRS 528 i...
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