For 1990-2009 cars only
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 Descriptors
DTC P1A6D: Starter/Generator Control Module System Voltage LowDTC P1A6E: Starter/Generator Control Module System Voltage High
Circuit/System Description
The starter/generator control module (SGCM) monitors the system voltage sensor to detect for a shorted low or shorted high condition.
Conditions for Running the DTC
P1A6D, P1A6E
| • | The engine is running. |
| • | Hybrid mode is active. |
Conditions for Setting the DTC
P1A6D
| • | Sensor output voltage is less than 0.2 volt (30.0 volts). |
| • | The 12-volt power supply - 12-volt output voltage is greater than 5 volts for 0.5 ms. |
P1A6D
| • | Sensor output voltage is greater than 3.84 volt (1.56 volts). |
| • | The 12-volt power supply - 12-volt output voltage is greater than 5 volts for 0.5 ms. |
Action Taken When the DTC Sets
Hybrid system is disabled.
Conditions for Clearing the DTC
Wake up signal is ON.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Starter/Generator Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
P1A6D, P1A6E
- With a scan tool, clear the DTC.
- Ignition OFF, wait 30 seconds.
- Ignition ON, operate the vehicle within the Conditions for Running the DTC and verify the DTC does not reset.
| ⇒ | 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
