P0638
Read the instructions below then start the fault diagnostic procedure.
Symptom:
| P0638 |
Throttle Actuator Circuit, Short to B+
On-Board Diagnostics
Type of diagnosis:| - |
Continuous.
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Enable criteria:
| - |
Turn Ignition On.
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Fault criteria:
| - |
Output shorted to B+ for more than 0.5 s.
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Check the wiring
A fault in the control module's female connector can generate a DTC. Check the contact for oxidation, dislodge pins and pin clamping force.Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this. Check switches, connectors and crimp connections for oxidation, dislodged pins and pin clamping force.
Diagnostic help
Diagnostic tool functions related to this fault are:| • |
Read value:
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| • |
Shut Down Throttle Solenoid
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| • |
Activate:
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| • |
Shut Down Throttle Solenoid
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For more information, see also:
- "Read Values" menu for a description of read values.
- "Activate" menu for a description of applications.
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