Question about 2004 Pontiac Grand Prix

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Drivers side turn signals will not function properly even though all lamps are burning

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Do you mean they dont blink? only on left side, but do blink on the right? put the hazrd flashers on and see if all works., if OK , then may be the turn signal switch of only the left side does not blink???

Posted on Oct 04, 2009

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Posted on Jan 02, 2017

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3 Answers

Turn signals not working


all else on car works perfectly (other shoe drops??????)
waring 1: no scan tool, you will fail (99%)
is battery fully charged to 12.6vdc rested or at 10v?
all 4 corners dead?
not working means dead?, flashes too fast/slow or dim? or they stick on? (5 modes to fail not counting L/R and haz)
do the hazards work? (prime evidence and not stated)
most cars before 2007 have fuse marked TURN.
but not this car... its not at all like older cars....
did you scan it first after the fuse tests? any PCM scan tool.?
2009 WK jeep
the FSM chapter 8L shows the huge list of errors the lamps can fail. DTC errors.
in fact 8 blinker codes, ! DTC errors,

there is no fuse, just for turns, (trailer lamps fuse 19)

read this excerpt from the FSM book.

The turn signal system operates on battery current received on a fused ignition switch output (run) circuit so that the
turn signals will only operate with the ignition switch in the On position. The hazard warning system operates on
non-switched battery current received on a fused B(+) circuit so that the hazard warning remains operational regardless
of the ignition switch position. When the turn signal system is activated, the circuitry of the left multi-function
switch and the FCM will cause the selected (right or left) turn signal indicator, front park/turn signal lamp, front side
marker lamp and rear tail/stop/turn signal lamp to flash on and off. When the hazard warning system is activated,
the circuitry of the hazard warning switch and the FCM will cause both the right side and the left side turn signal
indicators, front park/turn signal lamps, front side marker lamps and rear tail/stop/turn signal lamps to flash on and
off. The Front Control Module (FCM) can also activate the hazard warning system lamps.
end quote)

the module front control MFC, runs this
and it uses fuse 18 , if 18 blows the module goes off line and vast things fail and huge numbers OF DTCs store.
and fuse 27 MFC
MFC needs these fuses good.
keep in mind nobody has MFC internal schematics...so........



this module drives left and right side front and rear.
electronic drivers, not fuses.
the MFC is here.
the fuses are 12,13,18, 20,27 that power MFC.


25812039-lb3yimx2pwhstnjl4tgwffiq-2-0.jpg ground this end.

Aug 07, 2015 | 2009 Jeep Grand Cherokee

2 Answers

Where is the emergency flasher relay located on 2013 Rogue?


Here is what the service manual says. Looks like it is not a flasher relay but a function of the body control module.

TURN SIGNAL AND HAZARD WARNING LAMP SYSTEMSystem Description OUTLINE Turn signal lamp and the hazard warning lamp is controlled by combination switch reading function and the flasher control function of BCM.
TURN SIGNAL LAMP OPERATION - BCM detects the combination switch condition by the combination switch reading function. - BCM supplies voltage to the right (left) turn signal lamp circuit when the ignition switch is turned ON and the turn signal switch is in the right (left) position. BCM blinks the turn signal lamp.
HAZARD WARNING LAMP OPERATION BCM supplies voltage to both turn signal lamp circuit when the hazard switch is turned ON. BCM blinks the hazard warning lamp.
TURN SIGNAL INDICATOR LAMP AND TURN SIGNAL SOUND OPERATION - BCM transmits the turn indicator signal to the combination meter with CAN communication while the turn signal lamp and the hazard warning lamp are operating. - Combination meter outputs the turn signal sound with the integrated buzzer while blinking the turn signal indicator lamp according to the turn indicator signal.
HIGH FLASHER OPERATION (FAIL-SAFE) - BCM detects the turn signal lamp circuit status by the terminal current value. - BCM increases the turn signal lamp blinking speed if the bulb or harness open is detected with the turn signal lamp operating. NOTE: The blinking speed is normal while operating the hazard warning lamp.

Oct 13, 2014 | 2013 Nissan Rogue

1 Answer

Turn signals not functioning properly


Please check the bulbs. These issues can happen if your bulb is burned out. Crazy if you have a bad bulb on both sides but still need to rule them out.

Nov 23, 2013 | 1997 Oldsmobile Bravada

1 Answer

Driver side brake light issue


Consider the posibility that the replacement lamp is being installed backwards. It can be done and the resulting effect on performance will be as you describe

Feb 12, 2013 | Cars & Trucks

1 Answer

2003 Jeep liberty right front turn signal


why skip RR lamp? what does IT DO? be like 1st 1st look.
dim, out, fast?

the rapid is talking to you
it means current is wrong,
shorted, or open lines. to the right.
its the wiring
if the bulbs are like 1157 brass base bulbs
why not replace them first , they can short inside,
asking online for guessing is silly, why listen to 10 examples for this.
but is cut wires.
shorted wires.
keep i mind the blinker asks funny for both opens and shorts
its a feature, that.
low current or too much.

the acid test is connect 2 TEST bulbs in parallel to the multi-function switch output right side,
blinks ok now, bingo bad lamps or bad wiring, from there to the right side.

if the hazard fails you never said????
if rigth front is dim or dead the bulb is blown or shorted
if new bulb there , then the wires are shorted.
to it.
the only help on line worth squat is how to test and use your meter.
you can, check for voltage
you can check continuity on that line (its just 1 wire)
and check for shorts on that wire to ground (lamps pulled right side to do that, lamps read 0 ohms cold)
look for collision damage RF? behind lamp sockets?
be first.
in my book.
looking is always first. sure.


I have your SM book open now, chapter 8w-50
the haz/blink module has just 2 pins, left and right out.
pin 3 on the module runs front and rear blinks, (a fact to know)
RF is BR/RD, brown -red stripe?
all comments USA on USA forum. USA car.
ok?

the right side lamp (sidemaker) only blinks turns if parks ARE oFF

Id try 2 new blinker lamps front and 1 rear.
that be first. or test the lamp on a battery , and no not get burned fingers hot wring a shorted lamp.

wish i knew
what rear did
and what both did on HAZ
out, dim or to fast.

Mar 23, 2017 | 2003 Jeep Liberty

3 Answers

Turn signals dont work


that could easily be just the fuse or the flasher unit. both are on the driver side under the dash

Mar 10, 2010 | 1991 Ford Tempo 4 Door

1 Answer

I wanted to know if the flasher can knock out the right side flasher lights while the left side is working but flashing very fast?


Fast flashing occurs when one or more signal lights burn out on that side--front or rear. Other than the stress of turning the lamps off and on, the flasher should not cause rapid burn-out of any lamps. If any lamp doesn't work even with a new bulb, check for a poor grounding connection locally.

Feb 02, 2010 | 1999 Mitsubishi Galant

2 Answers

My left indicator isnt working,the rest are though


need more info ??does it work with hazzards on ??all four lights?'

Jun 14, 2009 | 1999 Volkswagen Passat

1 Answer

Turn signal driver's side doesn't blink


A safety (warning) feature on many cars is that the turn signal light will come on but not blink. This should indicate a burned out filament in one of the bulbs on the effected side. Try checking the bulbs and replace them one by one and see if this cures the problem.

Apr 30, 2009 | 2002 Pontiac Firebird

1 Answer

Side signal driver side


What your describing sounds like incorrect bulb positioning. If the socket is not located correctly then water can enter the light housing and blow the bulb, sometimes in pieces. This is the only condition that a bulb blows to pieces, when a hot bulb meets water. If needed remove the entire lamp assembly to make sure it is properly located in the socket. Good luck.

Oct 16, 2008 | 2000 Dodge Caravan

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