DTC B1517
Diagnostic Instructions
DTC Descriptors
| DTC B1517 03: Battery Voltage Low Voltage |
| DTC B1517 07: Battery Voltage High
Voltage |
| DTC B1517 5A: Battery Voltage Not
Plausible |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
B+
|
B1517 03*, B1517 5A*
|
B1517 03*, B1517 5A*
|
-
|
-
|
Ground
|
-
|
B1517 03*, B1517 5A*
|
-
|
-
|
* All B+ and ground terminals can set these DTCs
|
|
| |
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 instrument panel cluster
illuminates the charge indicator. |
| • |
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 . |
| • |
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
Connector End View Reference
Component Connector End Views
Description and Operation
Charging System Description and Operation
Electrical Information Reference
Scan Tool Reference
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 between 12.6-15.0 V. |
| 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 Ω between the ground circuit terminals listed below
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+ circuit terminals listed below and
ground: |
| ⇒ |
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 after completing the diagnostic
procedure.
Control Module References for BCM replacement, setup, and
programming
|
