Trailer Lamps Malfunction

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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.

Diagnosti

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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: Trailer Lamps Malfunction

diagnostic

instructions

system

vehicle

provides

information

circuit

short

ground

open

resistance

voltage

signal

trailer

backup

relay

control

park

stop

lamp

right

connector

malfunction

description

reverse

position

module

message

battery

remove

switch

applied

applying

tail

license

operation

times

brake

pedal

sensor

reference

fuse

multifunction

ignition

body

cycle

testing

exterior

scan

tool

verify

commanding

turns

test

terminalb

xtrailer

greater

repair

connection

disconnect

harness

xafuse

block

rear

terminal

connect

illuminate

infinite

replace

kbody

terminal

appropriate

listed

underhood

short voltage

control trailer

trailer park

park lamps

trailer stop

stop signal

signal lamp

lamp relay

lamps control

lamp control

right trailer

connector ground

lamps malfunction

circuit system

control module

battery voltage

control circuit

ground applied

park lamp

switch signal

control circuits

pedal position

position sensor

right stop

illuminates trailer

stop lamps

signal multifunction

multifunction switch

signal lamps

vehicles backup

lamps commanding

lamps scan

tool vehicles

malfunction vehicles

vehicles park

lamp turns

brake lamp

vehicles right

right signal

exterior lamps

ground circuit

xtrailer connector

greater ignition

repair open

resistance circuit

resistance ground

ground connection

harness connector

connector xafuse

rear body

circuit terminal

terminal ground

test lamp

verify test

lamp illuminates

lamp illuminate

illuminate ignition

test infinite

infinite resistance

resistance control

resistance repair

repair short

kbody control

circuit terminal

terminal ground

voltage circuit

test replace

replace xafuse

terminal listed

ignition disconnect

ground test

underhood test

lamp fuse

underhood ignition

relay control trailer

control trailer park

trailer park lamps

control trailer stop

trailer stop signal

stop signal lamp

signal lamp relay

backup lamps control

lamps control trailer

park lamps control

signal lamp control

gear selector reverse

selector reverse position

battery voltage backup

voltage backup lamps

lamps control circuit

position ground applied

switch signal circuit

lamp operation right

operation right trailer

right trailer stop

lamp relay supplied

relay supplied battery

supplied battery voltage

battery voltage times

brake pedal position

pedal position sensor

right stop lamp

lamp relay control

relay control circuits

lamp relay energized

relay energized relay

energized relay switch

relay switch contacts

stop signal fuse

signal fuse trailer

lamp control circuits

control circuits illuminates

circuits illuminates trailer

illuminates trailer stop

signal multifunction switch

control module references

vehicles backup lamps

commanding backup lamps

backup lamps scan

lamps scan tool

scan tool vehicles

backup lamps malfunction

lamps malfunction vehicles

lamps verify vehicles

vehicles park lamps

stop lamp turns

lamp turns commanding

stop lamp scan

lamp scan tool

vehicles brake lamp

brake lamp stop

lamp stop lamps

stop lamps malfunction

brake lamp turns

lamp turns verify

turns verify vehicles

verify vehicles right

vehicles right brake

right brake lamp

malfunction vehicles right

vehicles right signal

right signal lamps

circuit system testing

xtrailer connector ground

greater repair open

repair open resistance

open resistance circuit

open resistance ground

resistance ground connection

ignition vehicle systems

harness connector xafuse

connector xafuse block

circuit terminal ground

control circuit terminal

verify test lamp

test lamp illuminates

test lamp illuminate

lamp illuminate ignition

test infinite resistance

infinite resistance control

resistance control circuit

infinite resistance repair

resistance repair short

repair short ground

short ground circuit

replace kbody control

kbody control module

control module test

module test lamp

control circuit terminal

circuit terminal ground

greater repair short

repair short voltage

short voltage circuit

replace xafuse block

lamps malfunctionignition exterior

malfunctionignition exterior lamps

appropriate ground circuit

ground circuit terminal

circuit terminal listed

terminal listed xtrailer

listed xtrailer connector

connector ground terminala

harness connector kbody

connector kbody control

control module ignition

ground test lamp

illuminate ignition disconnect

underhood test lamp

lamp illuminates ignition

illuminates ignition connect

trailer park lamp

park lamp fuse

lamp illuminates trailer

switch control terminal

control terminal ground

terminal ground test

lamp illuminates test

illuminates test replace

test replace kbody

appropriate control circuit

terminal listed ground

listed ground terminal

signal lamp fuse