2010 Cadillac Truck SRX FWD V6-3.0L Page 474

2010 Cadillac Truck SRX FWD V6-3.0L Page 474

replace the K9 BCM.

瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.

4. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal C and ground.

瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the K9 BCM.

瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.

5. If all circuits test normal, test or replace the B18 battery current sensor.

B1516 66

1. Verify that the B18 battery current sensor is installed securely around the negative battery cable, with the tape tab pointing away from the

negative terminal on the C1 battery.

瀚慖f the B18 battery current sensor is not installed correctly, remove and reinstall the sensor properly.

2. Replace the B18 battery current sensor.

Repair Instructions

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

* Battery Positive and Negative Cable Replacement (LF1) (See: Starting and Charging/Battery/Battery Cable/Positive/Service and

Repair/Battery Positive and Negative Cable Replacement)Battery Positive and Negative Cable Replacement (LAU) (See: Starting and

Charging/Battery/Battery Cable/Positive/Service and Repair/Battery Positive and Negative Cable Replacement)

* 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

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.

Conditions for Running the DTC

* The BCM has power and ground.