PRE-RELEASE
DTC B1480
| DTC B1480 |
| 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
has overviews of all diagnostic categories.
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| DTC Descriptor |
DTC B1480 02
Battery Rundown Protection Circuit Short to Ground
| Circuit/System Description |
With the Ignition OFF, the body control module monitors the battery voltage to make sure that the voltage stays within the proper range. If the battery voltage is to low the BCM cuts several electrical circuits depending on the charging condition of the battery.
| Conditions for Running the DTC |
The ignition switch is OFF.
| Conditions for Setting the DTC |
The BCM detects a low battery voltage.
| Action Taken When the DTC Sets |
The BCM cuts several electrical circuits depending on the charging condition of the battery.
| Conditions for Clearing the DTC |
The condition for setting the DTC is not longer present.
| Reference Information |
Schematic Reference
Exterior Lights Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Exterior Lighting Systems 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 information on diagnostic tools
| Circuit/System Verification |
| 1. |
Run the engine and have the accessories off. Measure and register the battery voltage at the battery connections. The voltage must be between 12.6-15.0 V.
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| 2. |
If not within the specified range, refer to
Charging System Test
.
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| 3. |
Ignition OFF, measure and record the battery voltage at the battery terminals. The voltage must be between 12.45-12.75 V.
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| 4. |
If not within the specified range, refer to
Battery Inspection/Test
.
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| 5. |
Clear DTCs and verify the DTC B1480 does not reset.
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| 6. |
If the DTC resets, replace the K9 Body Control Module.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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Relay Replacement (Attached to Wire Harness)
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Control Module References
for information on BCM replacement, setup, and programming
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