Circuit Description
The battery current sensor is a 3-wire hall effect current sensor. The battery current sensor monitors the battery current. It directly inputs to the body control module (BCM). It creates a pulse width modulation (PWM) signal of 128 Hz with a duty cycle of 0-100 percent. Normal duty cycle is between 5-95 percent. Between 0-5 percent and 95-100 percent are for diagnostic purpose
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B1516 Battery Current Sensor Performance
Conditions for Running the DTC
| • | The key is in the ON position. |
| • | The engine is running. |
Conditions for Setting the DTC
This DTC will be set as current when the duty cycle of the PWM input signal is less than 4 percent or more than 96 percent for more than 15 seconds.
Action Taken When the DTC Sets
The SERVICE VEHICLE SOON warning message will be set in the drivers information center (DIC).
Conditions for Clearing the MIL/DTC
The DTC clears as a current status when the battery sensed current returns to normal range for more than 15 seconds.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Does the scan tool indicate that the parameter is within the specified range? | Less than 4-96% | Go to Step 3 | Go to Charging System Test |
3 | Inspect for poor connections at the harness connector of the battery current sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 5 | Go to Step 4 | |
4 | Replace the battery current sensor. Refer to Battery Current Sensor Replacement . Did you complete the replacement? | -- | Go to Step 5 | -- |
5 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
