2010 Cadillac CTS Sedan AWD V6-3.6L Page 400

2010 Cadillac CTS Sedan AWD V6-3.6L Page 400

DTC B1517

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/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. If the BCM detects the system voltage is outside an expected range for the

calibrated length of time, or the 2 BCM battery sense circuits differ by 2 V, DTC B1517 A will set.

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 seconds.

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 seconds.

B1517 5A

The battery voltage differs by 2 V on the BCM battery sense circuits for 10 seconds.

Action Taken When the DTC Sets

* The instrument panel cluster (IPC) illuminates the charge indicator.

* The driver information center (DIC) 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.