DTC B3420

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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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Service Manual Table of Contents

Document Tags

Document Title: DTC B3420

diagnostic

perform

system

check

vehicle

procedure

dtcb

ahld

rear

axle

sensor

signal

circuit

short

ground

voltage

information

open

resistance

suspension

position

headlamp

level

controller

ignition

control

leveling

running

test

milliseconds

setting

bthe

reference

less

than

actuator

nominal

condition

scan

tool

clear

dtcs

malfunction

inspect

wiring

replacement

intermittent

testing

poor

connections

connector

repairs

step

correct

harness

diagnostic system

rear suspension

position sensor

headlamp leveling

bthe rear

sensor voltage

voltage reference

leveling actuator

headlamps nominal

nominal level

signal circuits

testing intermittent

intermittent conditions

conditions poor

circuit testing

wiring repairs

step test

test rear

resistance short

testing wiring

correct condition

harness connector

perform diagnostic system

diagnostic system check

signal circuit voltage

rear suspension position

suspension position sensor

ignition crank position

bthe rear suspension

position sensor voltage

sensor voltage reference

voltage reference less

milliseconds bthe rear

headlamp leveling actuator

leveling actuator positioned

headlamps nominal level

nominal level headlamp

level headlamp level

sensor signal circuits

reference sensor signal

testing intermittent conditions

intermittent conditions poor

conditions poor connections

headlights daytime running

daytime running lights

connector view reference

component connector views

control module references

step test rear

test rear suspension

open resistance short

ground circuit testing

circuit testing wiring

testing wiring repairs

position sensor harness

step inspect poor

inspect poor connections

poor connections harness

connections harness connector

step important replacing

setup procedure replace

scan tool order

tool order clear

order clear dtcs

operate vehicle conditions

vehicle conditions running