• | 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. |
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Battery Current Sensor Supply Voltage | B1516 08 | B1516 08 | -- | -- |
Battery Current Sensor Signal Circuit | B1516 08 | B1516 08 | -- | -- |
Battery Current Sensor Low Reference Circuit | -- | B1516 08 | -- | -- |
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 5-volt 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 purposes.
• | The ignition is ON. |
• | The engine is running. |
The BCM detects a duty cycle of PWM input signal is less than 4 percent or more than 96 percent for more 33 seconds.
The BCM detects the battery current sensor is improperly installed.
The charge indicator illuminates in the instrument panel cluster (IPC) and the SERVICE BATTERY CHARGING SYSTEM warning message will be displayed in the driver information center (DIC) if equipped.
The DTC clears as current status when the battery sensed current returns to normal range for more than 5 seconds.
Starting and Charging Schematics
Engine Electrical Connector End Views
Charging System Description and Operation
⇒ | If the greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal replace the BCM. |
⇒ | If less than the specified range , test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit test normal replace the BCM. |
⇒ | If greater than specified range , test the supply voltage circuit for a short to voltage. |
⇒ | If less than the specified range,test the signal circuit for a short to ground or an open/high resistance. If the circuit test normal replace the BCM. |
⇒ | If greater than specified range , test the signal circuit for a short to voltage. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for BCM replacement, setup, and programming |