B101D

DTC B101D

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptor
DTC B101D 36
- ECU Hardware Performance EEPROM Failure




Circuit/System Description

The internal fault detection is handled inside the control module (radio). No external circuits are involved.


Conditions for Running the DTC

The module runs a program to detect an internal fault when power up is commanded. The only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating range.


Conditions for Setting the DTC

The module has detected an internal fault.


Action Taken When the DTC Sets

The radio refuses all user inputs.


Conditions for Clearing the DTC

* A current DTC clears when the conditions for setting the DTC are no longer present.
* A history DTC clears after 50 malfunction-free ignition cycles.
* The radio receives a clear command code from the scan tool.



Diagnostic Aids

* This DTC may be stored as a history DTC without affecting the operation of the module.
* If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.



Reference Information
Schematic Reference

Radio/Navigation System Schematics (Radio/Navigation System Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Radio/Audio System Description and Operation (Radio/Audio System Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information


Circuit/System Testing

If this DTC is retrieved as a current DTC, replace the module that set the DTC.