Question about 1999 Pontiac Sunfire

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I have a 99 Pontiac Sunfire, 2.2L and my turn signals quit working. I replaced the combination switch and the flasher/hazard relay, and still no joy. The problem was intermittent, and now it's just dead. My rear defroster quit working when my signals died too. It will turn on when I hit the button and the turn signals do work. All of this has led to my ABS lights to come on as well. What's my next option outside of buying a new car?

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  • Pontiac Master
  • 12,466 Answers

It will turn on when I hit the button and the turn signals do work. All of this has led to my ABS lights to come on as well. ??????????? Your best bet , take it to a qualified repair shop or learn to do better explanation's ! Or lean to do automotive electrical testing .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Electric Testing Techniques You Need to Know

How to Use Multimeter to Troubleshoot Common Problems

Do you know what a wiring diagram is ? How to use a DVOM - digital volt ohm meter ? Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year make ,model and engine size. Under system click on lighting ,then under subsystem click on turn signals . Click the search button then the blue links .Check power an ground circuits ! This is how we diagnose electrical faults , not just replacing parts .

Turn Lamps
Voltage is applied through the TURN fuse and the turn/hazard flasher when the ignition switch is in the following positions:
• RUN
• BULB TEST
• START
The voltage travels to the contact in the hazard switch. The hazard switch is located in the turn/hazard-headlamp switch assembly. This contact is normally closed.
When the left turn signal is turned on, voltage is applied to the following components.
• The left turn indicator
• The left front park/turn lamp circuit 14
• The left rear turn lamp circuit 18
The turn lamps turn on immediately. The current flow heats up the timing element. The timing element is located in the turn/hazard flasher. The timing element repeatedly opens and closes the circuit. This action causes the turn lamps to begin flashing.
The voltage that is applied to the left front park/turn lamp is also applied to the left front marker lamp. If the headlamp switch is in the OFF position, the left front marker lamp will find a path to ground through one of the following lamps. The following lamps provide low resistance paths to ground:
• The right front marker lamp
• The right turn indicator
• The right front park/turn lamps
• The left front park/turn lamps
The left front marker lamp flashes with the turn lamps. The voltage drop across the marker lamp is much higher than the voltage drop across the other lamps. The lamps that are used for the ground path will not flash.
When the headlamp switch is in either the PARK or HEAD positions, voltage is applied through the following components:
• The EXT LP fuse
• The marker lamps
• The park lamps
When the left turn signal is turned on, the left marker lamp will have voltage at both connections. The left marker lamp does not light. When the turn/hazard flasher stops the voltage to the turn lamps, the marker lamp is grounded through the turn lamp. The marker lamp does not go on. The left front marker lamp flashes in the following manner:
• The left front marker lamp flashes on when the turn filament of the left front park/turn lamp goes off.
• The left front marker lamp flashes off when the turn filament of the left front park/turn lamp goes on.
Voltage is applied to the right lamps in the same manner, when the right turn signal is turned on.
Hazard Lamps
Voltage is applied at all times through the following components to the normally open contact of the hazard switch in the turn/hazard-headlamp switch assembly:
• The STOP HAZ fuse
• The turn/hazard flasher
When the hazard switch is turned on, voltage is applied to the following components:
• The front turn lamps
• The rear turn lamps
The following lamps flash on and off:
• All of the turn lamps
• Both of the turn indicators
The front marker lamps flash with the hazard lamps on, just as the front marker lamps flash when the turn lamps are on. If the headlamp switch is in the OFF position, the front marker lamps flash on when the hazard lamps are on. The front marker lights will flash on when the hazard lamps are on if the headlamp switch is in one of the following positions:
• PARK
• HEAD
When the hazard lamps are on, the following conditions apply:
• The turn circuit is always open.
• The turn/hazard flasher controls the lamp.
Park/Marker Lamps
Voltage is applied through the EXT LP fuse, to the headlamp switch at all times. Voltage is applied to the park lamps and the marker lamps when the headlamp switch is in the following positions:
• PARK
• HEAD
The front marker lamps are grounded through the turn filament of the respective front park/turn lamp. The front marker lamps light as a result.
Stop Lamps
Voltage is applied through the STOP HAZ fuse to the brake switch at all times. When the brake pedal is depressed, the brake switch closes. This action applies voltage through the turn/hazard-headlamp switch assembly to the following lamps:
• The high mounted stop lamp assembly
• The left tail/stop-turn lamps
• The right tail/stop-turn lamps

Posted on Jun 30, 2017

  • Jeff Armer Jun 30, 2017

    Turn Signal Lamps Inoperative - Hazard Lamps Operate
    Turn Signal Lamps Inoperative - Left or Right Side

  • Jeff Armer Jun 30, 2017

    Turn Signal Lamps Inoperative - Hazard Lamps Operate
    Step
    Action
    Value(s)
    Yes
    No

    Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open.

    1
    Turn the ignition switch to the ON position.
    Disconnect the turn/hazard flasher connector.
    Connect a test lamp between terminal 1 of the turn/hazard flasher harness connector and ground.
    Does the test lamp light?
    --
    Go to Step 2
    Go to Step 3

    2
    Turn the LH turn signal or the RH turn signal to the ON position.
    Connect the fused jumper between terminal 1 and terminal 4 of the turn/hazard flasher harness connector.
    Do the turn lamps illuminate but not flash?
    --
    Go to Step 4
    Go to Step 5

    3
    Repair the open in CKT 539 between the fuse block and the turn/hazard flasher. Refer to Wiring Repairs in Wiring Systems.

    Is the repair complete?
    --
    System OK
    --

    4
    Replace the turn/hazard flasher.

    Is the repair complete?
    --
    System OK
    --

    5
    Reconnect the turn/hazard flasher connector.
    Disconnect the turn/hazard headlamp switch assembly.
    Connect fused jumper wire between terminal E and terminal F of the turn/hazard headlamp switch assembly harness connector.
    Do the turn signal lamps flash?
    --
    Go to Step 7
    Go to Step 6

    6
    Repair the open in CKT 16 between the turn/hazard flasher and the turn/hazard headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems.

    Is the repair complete?
    --
    System OK
    --

    7
    Replace the turn/hazard headlamp switch assembly.

    Is the repair complete?
    --
    System OK
    --

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SOURCE: turn signals hazards flasher don't work jeep

I NEED TO LOCATE THE SWITCH WHERE IS IT ?
MY INDICATORS NOR HAZARD LIGHTS ARE WORKING I DONT KNOW WHAT IS WRONG WITH IT CHANGED BULBS BUT NOTHIGN THEY ALL WENT OUT AT THE SAME TIME
SO THERE MUST BE A RELAY SWITCH SOMEWHER BUT DONT KNOW WHERE ?
THANKS FOR HELPING

Posted on Apr 01, 2010

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1 Answer

My turn signals sometimes will quit working then I have to hit the hazard lights button leave it on and then turn my turn signals on then they work what causes this to happen


When the turn signals quit working pull up , down , front to back an back to front on the turn signal switch handle . Do they work when doing this ? Pontiac had bad switch . The power for the turn signals goes through the flasher / hazard module . Could be the switch or the module.
The HAZARD LPS fuse in the left hand instrument panel (LH IP) junction block supplies battery positive voltage to the flasher module, which is part of the hazard switch assembly. The TURN LPS fuse in the LH IP junction block supplies ignition positive voltage to the flasher module. The turn signal lamps may only be activated with the ignition switch in the ON position. When the turn signal switch is placed in either the left or right position, current flow is from the flasher module's output to the turn signal switch assembly. The flasher module then sends an on-off voltage signal to either the left or right turn signals and their instrument panel cluster (IPC) indicator. When the hazard switch is pressed, all the turn signal lamps will flash including both IPC turn signal indicators.

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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.
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Flasher unit relay


Hi there:The combination flasher for this model is integral to the hazard switch located in the center of the instrument panel, just above the radio. The combination flasher is a smart relay that functions as both the turn signal system and the hazard warning system flasher. If supplemental lighting is added to the turn signal lamp circuits, such as when towing a trailer with lights, the combination flasher will automatically try to compensate to keep the flash rate the same.


The combination flasher cannot be repaired or adjusted and, if faulty or damaged, the hazard switch unit must be replaced.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

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Hope this helps.....

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