B1517
DTC B1517
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1517 03
- Battery Voltage Below Threshold
DTC B1517 07
- Battery Voltage Above Threshold
DTC B1517 5A
- Battery Voltage Plausibility Failure
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) has designated circuits for monitoring vehicle system voltage. The BCM monitors the system voltage to ensure that the voltage stays within the proper range. Damage to components, and incorrect data may occur when the system voltage is out of range. The BCM monitors the system voltage over an extended length of time. If the BCM detects the system voltage is outside an expected range for the calibrated length of time, or the 2 BCM battery sense circuits differ by 2 V, DTC B1517 A will set.
Conditions for Running the DTC
* The BCM has power and ground.
* The ignition is not in the START position.
Conditions for Setting the DTC
B1517 03
* The battery voltage is less than 11 V.
* The engine speed is greater than 1,100 RPM.
* The above conditions are met for 15 seconds.
B1517 07
* The battery voltage is greater than 16 V.
* The engine speed is greater than 1,100 RPM.
* The above conditions are met for 15 seconds.
B1517 5A
The battery voltage differs by 2 V on the BCM battery sense circuits for 10 seconds.
Action Taken When the DTC Sets
* The instrument panel cluster (IPC) illuminates the charge indicator.
* The driver information center (DIC) displays the SERVICE BATTERY CHARGING SYSTEM warning message.
Conditions for Clearing the DTC
* The DTC will clear current status when fault is no longer present.
* The history DTC will clear after 50 consecutive ignition cycles have occurred without a malfunction.
Diagnostic Aids
* A high or low voltage DTC set in multiple modules indicates a concern in the charging system. Refer to Charging System Test (Charging System Test)
* This DTC may be set by overcharging with a battery charger, or jump by starting.
* Inspect the ground connection G201, and ensure that it is clean and tight.
Reference Information
Schematic Reference
* Starting and Charging Schematics ([1][2]Electrical Diagrams)
* Body Control System Schematics (Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Charging System Description and Operation (Description and Operation)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
1. Engine running, accessories OFF, measure and record the voltage at the battery voltage at the battery terminals. The voltage should be between 12.6 and 15.0 V.
• If not within the specified range, refer to Charging System Test (Charging System Test)
2. Observe the scan tool BCM Battery Voltage parameter. The reading should be between 12.6 and 15.0 V.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connectors at the BCM.
2. Ignition OFF, test for less than 3.0 Ohms between the ground circuit terminal 9 X4 and ground.
• If not within the specified range, test the ground circuit for an open/high resistance.
3. Ignition On, verify a test lamp illuminates between the B+ circuits listed below and ground.
* Terminal 3 X3
* Terminal 10 X4
• If the test lamp does not illuminate, test the B+ circuits for a short to ground or an open/high resistance.
4. If all the circuits test normal, test or replace the BCM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
Control Module References (Programming and Relearning) for BCM replacement, setup, and programming.