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• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
5V Reference | B1516 08 | B1516 08 | - | - |
Signal | B1516 08 | B1516 08 | B1516 08 | B1516 08, B1516 66 |
Low Reference | - | B1516 08 | - | - |
The battery current sensor is a 3 wire hall effect current sensor. The body control module (BCM) supplies 5 V and ground to the battery current sensor. The battery current sensor measures the amount of current flowing to or from the battery, and supplies a pulse width modulation (PWM) signal to the BCM.
The BCM is awake.
• | The BCM is awake. |
• | The engine is OFF. |
The battery current signal is less than 4% or greater than 96% duty cycle for 2 min.
The battery current polarity is positive for 2 min.
The regulated voltage control is disabled.
The DTC passes when the battery current returns to the normal range for 15 s.
DTC B1516 08 could be set by overcharging with a battery charger or jump starting.
Starting and Charging Schematics
Charging System Description and Operation
Control Module References for scan tool information
⇒ | If greater than specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module. |
⇒ | If less than the specified range , test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module. |
⇒ | If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K9 Body Control Module. |
⇒ | If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module. |
⇒ | If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K9 Body Control Module. |
⇒ | If the B18 Battery Current Sensor is not installed correctly, remove and reinstall the sensor properly. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for BCM replacement, programming and setup
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