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 P1A6C: Starter/Generator Control Module Not ProgrammedCircuit/System Description
The starter/generator control module (SGCM) monitors to detect internal fault. If a fault is detected, the appropriate DTC will set.
Conditions for Running the DTC
The SGCM has received a wake up signal.
Conditions for Setting the DTC
The SGCM has detected an internal fault.
Action Taken When the DTC Sets
The hybrid system is disabled.
Conditions for Clearing the DTC
The SGCM is successfully programmed.
Reference Information
Schematic Reference
Connector End View Reference
Hybrid Controls Connector End Views
Electrical Information Reference
Description and Operation
Starter/Generator Description and Operation
Circuit/System Verification
Caution: To help avoid personal injury, additional precautions must be taken prior to working on the generator control module or the generator starter. After removing the 36V battery cables from the generator battery, remove both engine wiring harness connectors from the generator control module. Wait at least 5 minutes and then remove the generator control module cover. Verify voltage levels at all 36V, 12V, and 3-phase connections, are less than 3 volts using a DMM before proceeding.
Caution: To help avoid personal injury, be careful when working in the vicinity of the generator battery disconnect control module. Internal components will still be live, 36V potential, even when the cover has been opened or removed.
Verify that DTC P1A6C is not set as current.
| ⇒ | If the DTC is set, program the SGCM. If the DTC resets, replace the SGCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for SGCM replacement, setup, and programming
