B1014

DTC B1014

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B1014

-
Program Read Only Memory (ROM) Checksum Error

Circuit/System Description

The control module runs a program to detect an internal fault when power up is commanded. The module retains a copy of the FLASH application checksum reference value in the FLASH memory. During wake-up the module will compute the FLASH application value and compare it to the FLASH application checksum reference value.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

FLASH application value does not match checksum reference value.

Action Taken When the DTC Sets

The control module will enter boot mode, and only the program FLASH memory function will be available.

Conditions for Clearing the DTC

* A current DTC clears when the malfunction is no longer present.

* A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

Reference Information

Schematic Reference

Data Communication Schematics [1][2]Electrical Diagrams

Connector End View Reference

Component Connector End Views 5 Bow Lowered Switch (CM7)

Description and Operation

Body Control System Description and Operation Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Refer to Control Module References Control Module References for scan tool information.

Circuit/System Verification

Verify that DTC B1014 is not set.

If the DTC is set, perform the setup procedure on the control module. If the DTC resets replace the control module.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

Control Module References Control Module References for control module replacement, setup, and programming