P1A6C
DTC P1A6C
CIRCUIT DESCRIPTION
The internal fault detection is handled inside the control module. No external circuits are involved.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P1AC6 SGCM Service Calibration Fault
CONDITIONS FOR RUNNING THE DTC
- The module has received voltage on the ignition 0 voltage circuit.
- The module has turned ON and no configuration DTC are present.
- This diagnostic shall be run every 100 ms.
- Reference voltage is stable and accurate.
- The module microprocessor must be active/awake.
CONDITIONS FOR SETTING THE DTC
This DTC indicates that the energy storage control module (ESCM), starter generator control module (SGCM) or heating control module (HCM) has not yet been programmed with latest production software.
ACTION TAKEN WHEN THE DTC SETS
- The powertrain control module (PCM) stores the DTC information into memory when the diagnostic runs and fails.
- The malfunction indicator lamp (MIL) will not illuminate.
- The driver information center, if equipped, may display a message.
- The microprocessor reverts back to the base programmed critical operating data until new data is learned and stored in module.
If the SGCM DTC P1A6C is set current, the vehicle will not crank.
CONDITIONS FOR CLEARING THE DTC
- A current DTC Last Test Failed clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
- Clear the DTC with a scan tool.
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.
TEST
