Circuit Description
The throttle position signal is used by the ASM to control the actual throttle position that is requested by the EBCM. The EBCM compares the Delivered throttle position sensor value that is sent from the ASM to the throttle position sensor value sent from the PCM over the Class 2 serial data line.
Conditions for Setting the DTC
DTC C0238 will set if the EBCM detects a difference between the PCM throttle position and the throttle position sent from the ASM.
Action Taken When the DTC Sets
| • | A malfunction DTC is stored. |
| • | The TCS is disabled. |
Conditions for Clearing the DTC
| • | Condition for DTC is no longer present and scan tool clear DTC function is used. |
| • | 100 ignition cycles have passed with no DTCs detected. |
Diagnostic Aids
| • | It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction. |
| • | If an intermittent malfunction exists refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. |
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Antilock Brake System Schematics | |||
1 | Did you perform the Diagnostic System Check? | Go to Step 2 | |
Are any PCM TPS DTCs set? | Go to Diagnostic Trouble Code (DTC) Types In Engine Controls | Go to Step 3 | |
3 |
Does DTC C0238 reset as a current DTC? | Go to Step 4 | |
4 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Is the replacement complete? | Go to Step 5 | -- |
5 |
Does the DTC reset? | Go to Step 2 | System OK |
