DTC B257B

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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 B257B

diagnostic

instructions

system

provides

lighting

control

switch

signal

voltage

information

circuit

short

ground

open

resistance

instrument

panel

dimmer

dimming

terminal

description

brightness

interior

backlighting

module

lights

reference

setting

conditions

detects

ignition

connector

testing

disconnect

harness

test

lamp

illuminate

kbody

infinite

repair

greater

replace

short voltage

dimmer switch

dimming control

control module

signal circuit

detects short

ignition disconnect

harness connector

circuit terminal

lamp illuminate

connector kbody

kbody control

infinite resistance

resistance circuit

repair short

greater repair

replace kbody

panel dimmer switch

dimmer switch signal

backlight dimming control

dimming control terminal

switch instrument panel

switch signal circuit

detects short ground

control module references

verify test lamp

circuit terminal ground

test lamp illuminate

harness connector kbody

connector kbody control

kbody control module

test infinite resistance

infinite resistance repair

resistance repair short

repair short ground

short ground circuit

greater repair open

repair open resistance

open resistance circuit

replace kbody control

control module test

module test lamp

circuit terminal signal

terminal signal circuit

signal circuit terminal