2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 486

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 486

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Battery Current Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Battery Current Sensor/Service and

Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming

B1517

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 - BCM

DTC B1517 07

- Battery Voltage Above Threshold - BCM

DTC B1517 5A

- Battery Voltage Plausibility Failure - BCM

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The body control module (BCM) has 2 circuits for monitoring vehicle system voltage. The BCM B+ is supplied to terminal 3 X3 by the BCM fuse,

and the high resolution B+ is supplied to the BCM terminal 10 X4 by the IPC fuse. The BCM monitors the system voltage on both circuits 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. If the BCM

detects the system voltage on the high resolution B+ circuit is outside the normal range, DTC B1517 will set.

Conditions for Running the DTC

The BCM is awake.

Conditions for Setting the DTC