DTC B1517 RHD
Diagnostic Instructions
DTC Descriptor
DTC B1517 00: Battery Voltage Below/Above Threshold
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 a correct range. Damage to components and incorrect data may occur when the
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 BCM battery sense circuits differ by 1 volt, DTC
B1517 will set. Other modules also monitor system voltage. The system voltage message
is sent to the other modules and will default to 12.9 volts.
Conditions for Running the DTC
This DTC shall run only if the telematics module has power, ground, and the
ignition is not in START mode. This DTC shall execute regardless of the battery voltage.
Conditions for Setting the DTC
The battery voltage measured by the telematics module is:
| • | Less than 11.8 V for greater than 30 minutes |
| • | Less than 11.6 V for greater than 20 minutes |
| • | Less than 11 V for greater than 90 seconds |
Action Taken When the DTC Sets
| • | The telematics module contacts the Telematics Call Centre alerting them
of a low battery concern. |
| • | The telematics module sets a DTC. |
Conditions for Clearing the DTC
| • | The condition for setting the DTC is no longer present. |
| • | The battery voltage measured by the telematics module is above 11.8 V. |
Reference Information
Schematic Reference
Power Distribution Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
Scan Tool Reference
Control Module References
Circuit/System Testing
- Measure and record the battery voltage.
- Ignition OFF, disconnect the harness connector at the telematics module.
- Ignition OFF, measure for battery voltage from the telematics module power
circuit to a known ground.
| ⇒ | If more than 1 volt difference between battery voltage and the power
circuit then test the applicable circuit for a short to ground or an open/high resistance.
If the circuits/connections test normal, replace the telematics module. |
Repair Instructions
Perform the
Diagnostic Repair Verification
after
completing the diagnostic procedure.
Control Module References
for telematics
module replacement, setup, and programming
