OFF-LINE DIAGNOSTICS FOR AN ELECTRONIC THROTTLE
First Claim
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1. An engine diagnostic system, comprising:
- a powertrain control module;
an electronic throttle operably connected with the module;
at least one sensor for indicating a parameter of the electronic throttle; and
an output for indicating a result, wherein the powertrain control module performs at least one test of at least one parameter of the electronic throttle when the electronic throttle is off-line.
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Abstract
An engine diagnostic system is described in which a number of engine diagnostics for an electronic throttle are performed while the throttle itself is off line. Of particular interest are positional, electrical, and timing tests of performance for the electronic throttle. A number of self-diagnostic routines may be performed when the engine is off-line and the testing will not interfere with an operator of the engine or a motor vehicle containing the engine.
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Citations
18 Claims
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1. An engine diagnostic system, comprising:
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a powertrain control module;
an electronic throttle operably connected with the module;
at least one sensor for indicating a parameter of the electronic throttle; and
an output for indicating a result, wherein the powertrain control module performs at least one test of at least one parameter of the electronic throttle when the electronic throttle is off-line. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of diagnosing off-line an electronic throttle connected to a powertrain control module of an internal combustion engine, the method comprising:
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waiting for a period of time when the electronic throttle is off-line;
testing the electronic throttle for at least one parameter of performance of the electronic throttle; and
outputting at least one result of the test. - View Dependent Claims (8, 9)
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10. An electronic throttle diagnostic system, comprising:
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an electronic throttle for an internal combustion engine;
a powertrain control module operably connected with the electronic throttle, the powertrain control module further comprising a memory with a software program for conducting diagnostic tests on the electronic throttle;
at least one sensor for indicating a parameter of the electronic throttle, wherein the powertrain control module performs at least one test of at least one parameter of the electronic throttle when the throttle is off-line; and
an output for outputting at least one result of the test. - View Dependent Claims (11, 12, 13)
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14. A vehicle diagnostic system comprising:
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an electronic throttle;
a powertrain control module operably connected with the electronic throttle;
at least one sensor for indicating a parameter of the electronic module, wherein the powertrain control module performs at least one test of at least one parameter of the electronic throttle when the electronic throttle is off line and outputs a result of the at least one test. - View Dependent Claims (15, 16, 17, 18)
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Specification