B1517
DTC B1517
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions 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.
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 s.
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 s.
B1517 5A
The battery voltage differs by 2 V on the BCM B+ circuits for 10 s.
Action Taken When the DTC Sets
The driver information center 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 Testing and Inspection
* The DTC may be set by overcharging with a battery charger, or by jump starting.
* Inspect the ground connection and ensure that it is clean and tight.
Reference Information
Schematic Reference
Body Control System Schematics [1][2]Body Control Systems
Connector End View Reference
Component Connector End Views Sunshade - Left (DH6)
Description and Operation
Charging System Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Engine running, accessories OFF, measure and record the voltage at the C1 Battery terminals. The voltage should be 12.6-15.0 V.
• If not within the specified range, refer to Charging System Test Testing and Inspection.
2. Observe the scan tool BCM Battery Voltage parameter. Verify that the scan tool displays a value that is within 2 V of the battery terminal voltage.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connectors at the K9 Body Control Module.
2. Ignition OFF, test for less than 3.0 ohms between the ground circuit terminals listed below and ground:
* Terminal 1 X1
* Terminal 2 X2
* Terminal 26 X4
* Terminal 3 X6
• 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+ circuit terminals listed below and ground:
* Terminal 2 X1
* Terminal 3 X1
* Terminal 4 X1
* Terminal 1 X2
* Terminal 3 X2
* Terminal 4 X2
* Terminal 20 X4
* Terminal 3 X5
* Terminal 4 X5
• If the test lamp does not illuminate, test the B+ circuits for a short to ground or an open/high resistance.
4. If the circuits test normal, test or replace the K9 Body Control Module.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
Control Module References Control Module References for BCM replacement, setup, and programming