Headlamps 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: Headlamps Malfunction

diagnostic

instructions

perform

system

vehicle

provides

information

circuit

short

ground

open

resistance

voltage

signal

fuse

headlamp

relay

control

beam

left

right

multifunction

switch

park

flash

pass

auto

select

assembly

malfunction

automatic

description

operation

module

position

ambient

light

sensor

daytime

running

placed

grounded

exterior

responds

commanding

applying

energizes

illuminating

outside

lighting

reference

lamp

condition

turns

speed

gmlan

verify

scan

tool

connector

testing

verification

ignition

parameter

active

inactive

change

disable

connect

test

refer

indicator

instrument

cluster

malfunctionignition

doors

closed

accessories

disconnect

harness

min

power

down

terminal

greater

repair

connection

kbody

infinite

replace

install

fused

jumper

wire

disconnected

sturn

appropriate

terminal

listed

illuminates

xafuse

block

underhood

eheadlamp

replacement

short voltage

control headlamp

beam relay

beam headlamp

headlamp control

signal multifunction

lamps signal

headlamps signal

pass signal

beam signal

switch auto

beam select

headlamps malfunction

beam headlamps

switch malfunction

automatic beam

select switch

circuit system

control module

signal circuits

headlamp switch

running lamps

signal circuit

circuit grounded

exterior lamps

applying ground

control circuit

circuit energizes

beam control

lamp control

reference circuit

system verification

tool headlamps

headlamps switch

switch parameter

inactive commanding

parameter change

change circuit

system testing

malfunction parameter

changes verify

tool automatic

automatic headlamps

headlamps disable

disable switch

flash switch

tool beam

commanding beams

test lamp

ground ignition

verify test

lamp turns

turns commanding

headlamps scan

tool test

refer circuit

control malfunction

verify automatic

control indicator

indicator turns

tool ambient

harness connector

switch min

min vehicle

vehicle systems

systems power

ground circuit

circuit terminal

terminal ground

greater ignition

repair open

resistance circuit

resistance ground

ground connection

parameter inactive

inactive inactive

inactive ignition

ignition disconnect

connector kbody

kbody control

test infinite

infinite resistance

resistance signal

ground infinite

resistance repair

repair short

resistance replace

replace kbody

module inactive

inactive install

wire signal

parameter active

active active

active ignition

module ignition

voltage circuit

module active

active verify

active test

test replace

tool disconnected

disconnected doors

sturn signal

circuit terminal

listed ground

left headlamp

right headlamp

lamp illuminates

headlamp fuse

disconnect appropriate

terminal ground

replace xafuse

underhood test

resistance control

circuit ground

appropriate eheadlamp

eheadlamp assembly

lamp ignition

beam indicator

beam relay control

beam headlamp control

signal multifunction switch

park lamps signal

multifunction switch headlamps

switch headlamps signal

flash pass signal

multifunction switch malfunction

malfunction automatic beam

automatic beam select

beam select switch

select switch malfunction

three signal circuits

headlamp switch headlamp

headlamp switch auto

switch auto position

daytime running lamps

headlamps signal circuit

signal circuit grounded

circuit grounded indicating

position park lamps

lamps signal circuit

beam request applying

request applying ground

relay control circuit

control circuit energizes

energized switch contacts

switch contacts allowing

contacts allowing battery

allowing battery voltage

battery voltage flow

voltage flow right

beam control circuits

control circuits illuminating

circuits illuminating right

beam signal circuit

pass signal circuit

position ground applied

applying ground beam

ground beam relay

circuit energizes beam

energizes beam relay

automatic lamp control

lamp control headlamp

control headlamp switch

control module references

circuit system verification

scan tool headlamps

tool headlamps switch

headlamps switch parameter

switch parameter changes

active inactive commanding

headlamp switch parameter

switch parameter change

parameter change circuit

change circuit system

circuit system testing

switch malfunction parameter

malfunction parameter changes

parameter changes verify

changes verify scan

scan tool automatic

tool automatic headlamps

automatic headlamps disable

headlamps disable switch

disable switch parameter

tool headlamps flash

headlamps flash switch

flash switch parameter

multifunction switch parameter

scan tool beam

tool beam select

select switch parameter

connect test lamp

test point ground

point ground ignition

verify test lamp

test lamp turns

lamp turns commanding

beam headlamps scan

headlamps scan tool

scan tool test

tool test lamp

refer circuit system

relay control malfunction

control malfunction test

malfunction test lamp

commanding beams scan

beams scan tool

verify automatic beam

automatic beam control

beam control indicator

control indicator instrument

multifunction switch automatic

switch automatic beam

light sensor simulate

scan tool ambient

tool ambient light

disconnect harness connector

switch min vehicle

min vehicle systems

vehicle systems power

systems power down

ground circuit terminal

circuit terminal ground

greater repair open

repair open resistance

open resistance circuit

open resistance ground

resistance ground connection

switch parameter inactive

parameter inactive inactive

inactive inactive ignition

inactive ignition disconnect

harness connector kbody

connector kbody control

kbody control module

test infinite resistance

infinite resistance signal

resistance signal circuit

signal circuit terminal

terminal ground infinite

ground infinite resistance

infinite resistance repair

resistance repair short

repair short ground

short ground circuit

infinite resistance replace

resistance replace kbody

replace kbody control

control module inactive

module inactive install

jumper wire signal

wire signal circuit

switch parameter active

parameter active active

active active ignition

active ignition disconnect

control module ignition

greater repair short

repair short voltage

short voltage circuit

control module active

module active verify

active verify scan

scan tool park

tool park lamps

park lamps switch

lamps switch parameter

module active test

active test replace

malfunctionignition scan tool

scan tool disconnected

tool disconnected doors

disconnected doors closed

harness connector sturn

connector sturn signal

sturn signal multifunction

multifunction switch min

test replace sturn

replace sturn signal

closed accessories open

accessories open drivers

open drivers door

drivers door disconnect

door disconnect harness

note perform circuit

perform circuit system

system verification proceeding

verification proceeding circuit

proceeding circuit system

system testing ignition

control circuit terminal

ignition left headlamp

test lamp illuminates

appropriate fuse listed

fuse listed ground

listed ground left

ground left headlamp

left headlamp fuse

right headlamp fuse

test lamp illuminate

ignition disconnect appropriate

disconnect appropriate harness

appropriate harness connector

harness connector listed

connector listed xafuse

listed xafuse block

circuit terminal ground

replace xafuse block

underhood test lamp

infinite resistance control

resistance control circuit

control circuit ground

exterior lamps disconnect

appropriate eheadlamp assembly

test lamp control

lamp control circuit

control circuit terminal

terminal ground ignition

test lamp ignition

lamp ignition disconnect

harness connector xafuse

connector xafuse block

lamp turns test

turns test replace

control module test

module test lamp

beam indicator turns

bbambient light sunload

light sunload sensor

reference circuit terminal

greater ignition disconnect

khvac control module

light sensor parameter