DTC B3891

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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 Descr

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You may preview the service manual table of contents by clicking below.

Service Manual Table of Contents

Document Tags

Document Title: DTC B3891

diagnostic

instructions

system

procedure

trailer

circuit

short

ground

open

information

voltage

signal

rear

lamp

switch

control

module

xbcm

conditions

ignition

scan

tool

reference

connector

testing

bulb

diagnostic procedure

short voltage

circuit system

lamp circuit

trailer rear

lamp switch signal

switch signal circuit

auxiliary control module

control module references