B1517

DTC B1517

Circuit Description

The instrument panel module (IPM) has designated circuits for monitoring vehicle system voltage. The IPM monitors the system voltage to ensure that the voltage stays within the proper range. Damage to components, and incorrect data may occur when the voltage is out of range. The IPM monitors the system voltage over an extended length of time. If the IPM detects the system voltage is outside an expected range for the calibrated length of time, or the IPM battery sense circuits differ by 3 volts 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.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B1517 Battery Voltage

This vehicle has DTCs which include DTC symptoms. For more information, refer to DTC Symptom Description. DTC Symptom Description






Conditions for Running the DTC

This DTC shall run only if the IPM has power, ground, and the ignition is not in START mode. This DTC shall execute regardless of the battery voltage, except when the DTC B1440 is set current.

Conditions for Setting the DTC

* The battery voltage falls below 11 volts, engine speed greater than 1,100 RPM for 15 seconds.
* The battery voltage is greater 16 volts, engine speed greater than 1,100 RPM for 15 seconds.
* The battery voltage differs by 3 volts on the IPM battery sense circuits for 15 seconds.

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 a scan tool.

Test Description

Step 1 - Step 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 IPM. If voltages are not within the proper operating range, the voltage sense circuits needs to be tested.
4. This step tests the ground sense circuit of the IPM.
5. This step tests for the proper voltage of the 3 circuits to the IPM. If voltage is not within the proper operating range, the battery positive voltage and ground circuits of the IPM need to be tested.