2.17
DTC P0112 (15), P0113 (15)
GENERAL
Intake Air Temperature (IAT) Sensor
.The Electronic Control Module (ECM) supplies
and monitors a signal at terminal "14" of [11] to one side of the
IAT sensor. The other side of the IAT sensor is connected to
a common sensor ground, which is also connected to the ECM
terminal "27" of [11].
Refer to
. The IAT sensor is a thermistor device,
meaning that at a specific temperature, it will have a specific
resistance across its terminals. As this resistance varies, so
does the supplied voltage to terminal "14".
ed01492
Figure 2-45. IAT Sensor
•
At high temperatures, the resistance of the sensor is very
low. This effectively lowers the signal voltage on terminal
"14".
•
At low temperatures, the resistance is very high, allowing
the voltage to rise close to the supplied voltage of 5 volts.
The ECM monitors this voltage to compensate for various
operating conditions.
Table 2-27. Code Description
DESCRIPTION
CHECK
ENGINE
LAMP CODE
DTC
Intake air temperature sensor
voltage low
15
P0112
Intake air temperature sensor
voltage high/open
15
P0113
Table 2-28. Intake Air Temperature Sensor Specifications
TEMP °F
TEMP °C
RESISTANCE
VOLTS
257
125
1086
0.49
235
113
1561
0.68
212
100
2077
0.86
194
90
2920
1.13
176
80
3889
1.40
140
60
8149
2.25
104
40
16,178
3.09
86
30
23,670
3.52
68
20
31,170
3.94
50
10
55,359
4.24
32
0
96,383
4.53
14
-10
146,250
4.68
-4
-20
284,118
4.83
NOTE
All voltage and resistance values are approximate (±20%).
DIAGNOSTICS
TOOL NAME
PART NUMBER
BREAKOUT BOX
B-48115
HARNESS CONNECTOR TEST KIT
HD-41404-B
Diagnostic Tips
An intermittent may be caused by a poor connection, rubbed
through wire insulation or a wire broken inside the insulation.
Check for the following conditions:
•
Poor connection. Inspect ECM harness connector for
backed out terminals, improper mating, broken locks
improperly formed or damaged terminals, poor terminal-
to-wire connection and damaged harness.
•
Perform
to locate intermittents. If
connectors and harness check out OK, check intake air
temperature reading while moving related connectors and
wiring harness. If the failure is induced, the IAT sensor
display will change.
•
Shifted sensor. The temperature-to-resistance values table
may be used to test the IAT sensor at various temperature
levels in order to evaluate the possibility of a shifted (out-
of-calibration) sensor which may result in driveability
problems.
Diagnostic Notes
Each reference number below correlates to a circled number
on the flow chart(s).
1.
Connect BREAKOUT BOX (Part No. B-48115) to EFI
harness only (leave ECM disconnected). See
.
2-54 2008 Buell XB Diagnostics: Engine Management
Содержание 2008 XB SERIES
Страница 1: ...2008 Buell XB Models Electrical Diagnostics Manual 99493 08Y 2007 Buell Motorcycle Company ...
Страница 4: ...Blank Text Here ...
Страница 6: ...NOTES ...
Страница 14: ...NOTES ...
Страница 50: ...NOTES ...
Страница 72: ...ed01568 Figure 2 16 Checking for Leaks 2 22 2008 Buell XB Diagnostics Engine Management ...
Страница 128: ...ed01338 Figure 2 61 Speedometer Tester Part No HD 41354 2 78 2008 Buell XB Diagnostics Engine Management ...
Страница 202: ...NOTES ...
Страница 224: ...A 22 2008 Buell XB Diagnostics Appendix A Connector Repair NOTES ...
Страница 225: ...SUBJECT PAGE NO B 1 CONNECTORS B 1 B 2 WIRING DIAGRAMS B 3 APPENDIX B WIRING DIAGRAMS ...
Страница 226: ...NOTES ...
Страница 232: ...Figure B 2 Figure B 2 Main Harness Ulysses and Lightning Main Harness Ulysses and Lightning ...
Страница 234: ...Figure B 3 Figure B 3 Main Harness Firebolt Main Harness Firebolt ...
Страница 236: ...Figure B 4 Figure B 4 Engine Management Circuit All Models Engine Management Circuit All Models ...
Страница 238: ...Figure B 5 Figure B 5 Lighting Circuit Ulysses and Lightning Lighting Circuit Ulysses and Lightning ...
Страница 240: ...Figure B 6 Figure B 6 Lighting Circuit Firebolt Lighting Circuit Firebolt ...
Страница 242: ...Figure B 7 Figure B 7 Component Circuits All Models Component Circuits All Models ...
Страница 244: ...Figure B 8 Figure B 8 Horn and Instruments Circuit All Models Horn and Instruments Circuit All Models ...
Страница 246: ...Figure B 9 Figure B 9 Starting Circuit Ulysses and Lightning Starting Circuit Ulysses and Lightning ...
Страница 248: ...Figure B 10 Figure B 10 Starting Circuit Firebolt Starting Circuit Firebolt ...
Страница 250: ...Figure B 11 Figure B 11 Charging Circuits All Models Charging Circuits All Models ...
Страница 252: ...Figure B 12 Figure B 12 Heated Handlebar Grips Ulysses only Heated Handlebar Grips Ulysses only ...
Страница 266: ...B 40 2008 Buell XB Diagnostics Appendix B Wiring Diagrams NOTES ...
Страница 267: ...SUBJECT PAGE NO C 1 METRIC CONVERSION C 1 C 2 FLUID CONVERSIONS C 2 C 3 TORQUE CONVERSIONS C 3 APPENDIX C CONVERSIONS ...
Страница 268: ...NOTES ...
Страница 272: ...C 4 2008 Buell XB Diagnostics Appendix C Conversions NOTES ...
Страница 273: ...SUBJECT PAGE NO D 1 GLOSSARY D 1 APPENDIX D GLOSSARY ...
Страница 274: ...NOTES ...
Страница 278: ...D 4 2008 Buell XB Diagnostics Appendix D Glossary NOTES ...
Страница 282: ...IV TOOLS NOTES ...
Страница 284: ...VI TORQUE VALUES NOTES ...
Страница 287: ...INSIDE BACK COVER GOES HERE ...
Страница 288: ...OUTSIDE BACK COVER GOES HERE ...