Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B1013: Calibration Read Only Memory (ROM) Checksum ErrorCircuit/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 module may have limited functional operation depending on the severity of the FLASH calibration corruption.
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
Connector End View Reference
Data Communication Connector End Views
Description and Operation
Data Link Communications Description and Operation
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
Verify that DTC B1013 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 after completing the diagnostic procedure.
Control Module References for control module replacement, setup, and programming
