B1475

DTC B1475

Diagnostic Instructions

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

DTC Descriptor
DTC B1475
- Retained Accessory Power Circuit

Diagnostic Fault Information





Circuit/System Description

The instrument panel cluster (IPC) controls the ACC/RAP relay through the relay coil control circuit by applying voltage to the circuit. The ACC/RAP relay is energized when the ignition switch is in ACC or Run, or when the vehicle is RAP mode.

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

The ACC/RAP relay control circuit is shorted to ground.

Action Taken When the DTC Sets

The ACC/RAP relay control will be disabled.

Conditions for Clearing the DTC

The current DTC clears when the fault is no longer present.

Reference Information
Schematic Reference

Power Distribution Schematics (without WHB) (Power Distribution Schematics (without WHB))Power Distribution Schematics (with WHB) (Power Distribution Schematics (with WHB))
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Power Mode Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Circuit/System Testing

1. Ignition OFF, disconnect the ACC/RAP relay.
2. Test for less than 1 ohm between the ground circuit terminal 85 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Connect a test lamp between the control circuit terminal 86 and ground.
4. Driver door open, turn the ignition switch ON and OFF. The test lamp should turn ON and OFF when changing between the commanded states.

• If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the IPC.
• If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the IPC.

5. If all circuits test normal, test or replace the ACC/RAP relay.

Repair Instructions

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

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