PRE-RELEASE
DTC B1516
| DTC B1516 |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| DTC Descriptors |
DTC B1516 08
Battery Current Sensor Signal Invalid
DTC B1516 66
Battery Current Sensor Wrong Mounting Position
| Diagnostic Fault Information |
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
| 5 V Reference | B1516 08 | B1516 08 | - | - |
| Signal | B1516 08 | B1516 08 | B1516 08 | B1516 08, B1516 66 |
| Low Reference | - | B1516 08 | - | - |
| Circuit/System Description |
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.
| Conditions for Running the DTC |
B1516 08
The BCM is awake.B1516 66
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The BCM is awake.
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The engine is OFF.
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| Conditions for Setting the DTC |
B1516 08
The battery current signal is less than 4 percent or greater than 96 percent duty cycle for 2 minutes.B1516 66
The battery current polarity is positive for 2 minutes.| Action Taken When the DTC Sets |
The regulated voltage control (RVC) is disabled.
| Conditions for Clearing the DTC |
The DTC passes when the battery current returns to the normal range for 15 seconds.
| Diagnostic Aids |
DTC B1516 08 could be set by overcharging with a battery charger or jump starting.
| Reference Information |
Schematic Reference
Starting and Charging Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Charging System Description and Operation
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Testing |
B1516 08
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Ignition OFF, disconnect the harness connector at the B18 battery current sensor.
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Ignition OFF and scan tool disconnected, open and close the driver door. Wait 1 minute. Test for less than 20 Ω between the low reference circuit terminal B and ground.
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If greater than specified range , test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K9 BCM.
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Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal A and ground.
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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 BCM.
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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 BCM.
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Ignition ON, test for 4.8-5.2 V between the signal circuit terminal C and ground.
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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 BCM.
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If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
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| 10. |
If all circuits test normal, test or replace the B18 battery current sensor.
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B1516 66
| 1. |
Verify that the B18 battery current sensor is installed securely around the negative battery cable, with the tape tab pointing away from the negative terminal on the C1 battery.
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If the B18 battery current sensor is not installed correctly, remove and reinstall the sensor properly.
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| 3. |
Replace the B18 battery current sensor.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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Battery Positive and Negative Cable Replacement (LAU)
Battery Positive and Negative Cable Replacement (LF1)
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Control Module References
for BCM replacement, setup, and programming
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