MULTIPORT
On-Vehicle Inspection of MFI
FUEL INJECTION Components
INTAKE AIR TEMPERATURE SENSOR
Volume air flow sensor
(with built in intake air
---- temperature sensor and
barometric pressure sensor)
Intake air
temperature sensor
Resistance
Temperature
A Equipment side
connector
Volume air flow
sensor connector
A Harness side
connector
L
r
Intake air
temperature
sensor
5
6
I
72
Engine control
module
OPERATION
l
The intake air temperature sensor converts the engine intake air temperature into a voltage and
inputs it to the engine control module, which then corrects the fuel injection rate, etc. based on the
input signal.
l
The 5 V power in the engine control module is supplied via a resistor in the module to the intake
air temperature sensor. Via the sensor which is a kind of resistor, it is grounded in the engine control
module. The intake air temperature sensor resistor has the characteristic of decreasing its resistance
decreases as the intake air temperature rises.
l
The intake air temperature sensor terminal voltage increases or decreases as the sensor resistance
increases or decreases. Therefore, the intake air temperature sensor terminal voltage changes with
the intake air temperature, decreasing as the temperature rises.
TROUBLESHOOTING HINTS
The intake air temperature sensor senses the intake air temperature in the air cleaner so that it may
indicate a temperature different from outside temperature depending on engine operating state.
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...
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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 609: ...AUTOMATIC TRANSAXLE Troubleshooting 23 I 9 L L 1 TSB Revision...
Page 668: ...NOTES...
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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...
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Page 964: ...37A 4 STEERING Snecial Tools SPECIAL TOOLS Preload socket General service TSB Revision...
Page 994: ...NOTES...
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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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