NVG 246-NP8 Transfer Case
DTC C0558
Circuit Description
At each power-up, the transfer case shift control module will check the boot loader for a valid calibration. If no calibration is found the DTC will be set, this DTC will be erased upon programming.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0558 Calibration Data Not Performed
Conditions for Running the DTC
^ The ignition is ON.
^ The system voltage is 9-18 volts.
Conditions for Setting the DTC
Calibration has not been programmed into the transfer case shift control module.
Action Taken When the DTC Sets
^ The SERVICE 4WD indicator remains illuminated for the remainder of the current ignition cycle.
^ The transfer case control switch does not display the current position LED while DTC C0558 is current.
Conditions for Clearing the DTC
^ Program the transfer case shift control module.
^ Perform the Diagnostic System Check - Vehicle. Initial Inspection and Diagnostic Overview
Test Description
The number below refers to the step number on the diagnostic table.
2. This step programs the transfer case shift control module.
