B1475

DTC B1475

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview)provides an overview of each diagnostic category.



DTC Descriptor
DTC B1475 00
- Retained Accessory Power Circuit




Diagnostic Fault Information






Circuit/System Description

The BCM controlled RAP is a switch controlled voltage supply from the BCM. Power is provided for approximately 10 minutes after shutting the ignition OFF and removing the key, providing no door is opened. The RAP fuse supply voltage circuit is energized when any of the following conditions are true:

* Ignition Switch is in ACC or ON.
* The vehicle was remote started.
* The vehicle is in RAP power mode.



Conditions for Running the DTC

* The system voltage is between 9-16 volts.
* The DTC can only run when the output is actively being requested by the module.



Conditions for Setting the DTC

The DTC will set only when the module requests the output and there is a short to ground in the RAP relay control circuit.


Action Taken When the DTC Sets

The module output driver will be shut down and not supply voltage to the circuit.


Conditions for Clearing the DTC

* The current DTC will clear when the module request for the output is removed or the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.



Reference Information
Schematic Reference

* Power Moding Schematics (Power Moding Diagrams)
* Power Distribution Schematics (Power Distribution Diagrams)

Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Retained Accessory Power (RAP) Description and Operation (Retained Accessory Power (RAP) Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning)for scan tool information.


Circuit/System Testing

1. Ignition OFF, Disconnect the BCM X5 harness connector.
2. Ignition OFF, connect a test lamp between the RAP fuse supply voltage circuit terminal 11 and ground.
3. Ignition OFF, RAP power mode active, verify the test lamp illuminates.

• If the test lamp remains OFF, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.

4. Ignition OFF, RAP power mode inactive, verify the test lamp does not illuminate.

• If the test lamp remains ON, replace the BCM.




Repair Instructions

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


Control Module References (Programming and Relearning)for BCM replacement, setup, and programming