Circuit Description
The voltage level is monitored by the engine control module (ECM) or powertrain control module (PCM) and is sent as a class 2 data message to the instrument panel cluster (IPC).
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B1513 Charging System Volts Low
Conditions for Running the DTC
| • | The key is in the ON position. |
| • | The engine is running. |
| • | Engine speed must be greater than 1,500 RPM. |
| • | DTC B1327 is not current. |
Conditions for Setting the DTC
This DTC will be set as current when the voltage falls below 10.5 volts for 30 seconds and the engine is running.
Action Taken When the DTC Sets
The charging system indicator message will be set in the driver information center (DIC).
Conditions for Clearing the MIL/DTC
The DTC clears as a current status when the voltage is greater than 10.5 volts for 30 seconds with the engine running.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Does the scan tool indicate that the volts parameter is within the specified range? | 10.5-16.2 V | Go to Step 3 | Go to Charging System Test |
3 | Replace the IPC. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 4 | -- |
4 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
