Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B071F 39

Transmission Range Indicator Internal Malfunction

Circuit/System Description

The body control module (BCM) receives LIN-Bus messages from the transmission range indicator module. If there is a checksum or memory malfunction in the transmission range indicator module it broadcast this message to the BCM.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

The BCM detects a checksum or memory fault in the transmission range indicator module.

Action Taken When the DTC Sets

The driver information center does not display the actual gear selector position.

Conditions for Clearing the DTC

The DTC becomes history when the condition for setting the DTC is no longer present.

Reference Information

Schematic Reference

Automatic Transmission Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Driver Information Center (DIC) Description and Operation

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Replace the S3 Automatic Transmission Shift Lever and verify that the DTC does not reset.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•	Automatic Transmission Range Selector Lever Replacement

•	Control Module References for information on BCM replacement, setup, and programming