Circuit Description
The internal fault detection is handled inside the control module. No external circuits are involved.
DTC Descriptors
This diagnostic procedure supports the following DTCs:
DTC P1A0B ESCM Service Calibration Fault
DTC P1AC6 SGCM Service Calibration Fault
Conditions for Running the DTC
The module microprocessor must be active/awake.
Conditions for Setting the DTC
This DTC indicates that the energy storage control module (ESCM) or starter/generator control module (SGCM) has not yet been programmed with latest production software.
Action Taken When the DTC Sets
The microprocessor reverts back to the base programmed critical operating data until new data is learned and stored in module.
If the SGCM P1A6C DTC is set current, the vehicle will not crank.
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. |
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. |
| • | If this DTC is retrieved as both a current and history DTC, reprogram the module. |
Step | Action | Yes | No |
|---|---|---|---|
1 | Was the Engine Electrical Diagnostic System Check performed? | Go to Step 2 | |
2 |
Is DTC retrieved as a current DTC? | Go to Step 3 | Go to Diagnostic Aids |
3 |
Important: Perform the setup procedure for the appropriate module, if required. Reprogram the module. Refer to Service Programming System (SPS) in Programming. Did you complete the reprogramming? | Go to Step 4 | -- |
4 |
Does the DTC reset? | Go to Step 2 | System OK |
