• | 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. |
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.
Ignition ON.
FLASH application value does not match checksum reference value.
The control module will enter boot mode, and only the program FLASH memory function will be available.
• | 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. |
Body Control System Description and Operation
Refer to Control Module References for scan tool information.
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. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for control module replacement, setup, and programming