B1517

DTC B1517

CIRCUIT DESCRIPTION
The body control module (BCM) has designated circuits for monitoring vehicle system voltage. Other modules also monitor system voltage. The BCM has 3 power inputs circuits and 2 main ground circuits. When the BCM sets B1517, the system voltage message is sent to the other modules and will default to 12.9 volts.

DTC DESCRIPTOR




This diagnostic procedure supports the following DTC:
DTC B1517 Battery Voltage (signal or 1) Voltage

This vehicle has DTCs that include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information. DTC Symptom Description

CONDITIONS FOR RUNNING THE DTC
This DTC shall run only if the BCM has power, ground, and the ignition is not in START mode. This DTC shall execute regardless of the battery voltage, except when the DTC B1391 is set current.

CONDITIONS FOR SETTING THE DTC

B1517 03
The battery voltage falls below 11 volts.

B1517 07
The battery voltage is greater than 16 volts.

B1517 52
A comparison failure occurred.

ACTION TAKEN WHEN THE DTC SETS

B1517 03
The driver information center (DIC) displays the Battery Voltage Low Message.

B1517 07
The DIC displays the Battery Voltage High Message.

B1517 52
The DIC displays the SERVICE VEHICLE SOON Message.

CONDITIONS FOR CLEARING THE DTC
- The DTC will clear current status when the fault is no longer present.
- A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
- Use the On-Board clearing DTCs feature.
- Use a scan tool.

TEST DESCRIPTION

Steps 1-11:

The numbers below refer to the step numbers on the diagnostic table.
3. This step tests for the proper voltage at battery positive voltage sense circuits of the BCM. If voltages are not within the proper operating range, the voltage sense circuits needs to be tested.
4. This step tests the ground sense circuits of the BCM.
5. This step tests for the proper voltage of the circuits to the BCM. If voltage is not within the proper operating range, the battery positive voltage and ground circuits of the BCM need to be tested.