Brake Lights, Rear Turn Signals, and blinker singal not working
The brake lights, rear left and right turn signals, hazard lights, and blinker signal on the dash just up and stopped working, the parking lights do come on, and i checked and changed the fuse but that still didnt correct the problem, any advice?
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In the diagram for rear lamp, the top wires are voltage, the bottom black wire is ground. The brown wire on either side should be tail lamps, goes hot when you turn on the headlamp switch. The other top wire on either should be for turn signal. With everything turned on, is there voltage on that wire?
Because the front works and the rear don't, possible wiring circuit problem? The voltage for turn signals comes from bcm. The bcm knows when you turn on turn signal switch, either side, then the bcm sends voltage to turn signal lamp at the rear and front.
This vehicle is equipped with the following printed circuit board PCB mounted relays.
• High beam
• Low beam
• Fog lamp
• Park lamp
• Stop lamp
• Horn relay
They are directly soldered to the underhood fuseblock circuit board. A failure of one of these relays will require the whole under hood fuse block to be replaced.
Turn Signal/Hazard Lamps
The body control module (BCM) is responsible for controlling the turn signals and hazard lamps. When the turn signal switch is placed in either the left turn or right turn position, the BCM receives a signal from the turn signal switch. The BCM 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, the BCM receives a signal from the hazard switch. The BCM then will send an on-off voltage signal to all the turn signal lamps. All the turn signal lamps will flash including both IPC turn signal indicators.
Vehicles are just not the same as they use to be. Electronics !!!!!
The parking lights should be on a different circuit from turn signals - hazard lights. The bulbs usually have two filaments, one for each circuit. On most models there is a tail light fuse and relay that handles front and rear parking lights.
If the turn signal filament of the right front park/turn lamp is known to be OK and the hazard switch is in the normal position, the hazard switch or the turn signal/multi-function switch could be defective
Assuming this has the V6, the 15A PARK LPS fuse in the underhood fuse block feeds constant power to the auto park lamp relay. When the relay closes, 12V power passes through the 10A INST LPS fuse in the right instrument panel fuse block to the panel dimmer switch and then to the five instrument cluster lamps.
If by "rear lights" you mean everything in the rear lamp assemblies, power for the tail lights (running lights) starts at the 15A PARKLAMP fuse in the underhood junction block, passes through the automatic lamp control (ALC) relay and the right instrument panel junction block to the tail filament of the dual stop/tail lamp and the separate tail lamp on each side. The 12 V power for the stop lamps is protected by the 20A STOPLAMPS fuse in the left I/P junction block, passes through the stoplamp switch when brakes are applied, stop filament of the dual stop/tail lamps. That leaves the turn signals and the hazard lamps. Power for the turn signals originates at the 10A TURNLAMPS fuse in the left I/P junction block and is applied to the hazard switch. Switch output goes to the turn/headlamp/wiper switch for selection of left or right turn signals. That switch output goes to the turn lamp. Power for the hazard function begins at the 10A HAZRD LPS fuse in the left I/P junction box and goes to the hazard switch. Switch output is sent to the left I/P junction box to make the turn signals flash. That's it. Post a comment if you need more information.
Guessed it's a V6. Trying to sort this out. If setting the headlamp switch to PARK turns on the park filaments of the front park/turn signal lamp and the tail filaments of the rear tail/stop lamps and the separate tail lamps, the park light circuit is good. If 20A fuse 6 in the power distribution center is OK, the combination flasher in the multifunction switch is receiving power. Power is directed to the turn signal lamps by operation of the turn signal/hazard warning switch. If the turn signals are not flashing, the combination switch may have failed or the turn signal flasher part of the combination flasher may have failed. Finally, the hazard warning switch causes the turn signal elements of the front combination park/turn signal lamps and the rear turn lamps to flash.
Have you tried replacing the bulbs? The two side lights run through the turn signal switch so if they aren't getting power, chances are your signal switch is bad. Do your front blinkers work? Do the rear lights come on when you use the blinkers or the hazards?
YOU MIGHT WANT TO CHECK THE BULBS IN THE REAR LIGHTS THEY OFTEN STOP WORKING IF THERE IS A BURNT ONE . IF NOT THEN CHECK TO SEE IF YOU CAN HEAR THE CLICK WHEN YOU ENGAGE YOUR SIGNAL EACH WAY IT MIGHT BE IN THE STEERING COLOUM WHERE IT CONNECTS TO THE SIGNAL ARM
there are 2 one for the hazards and one for the blinkers
the hazards are under the dash about where your right knee would be you have to remaove the lower portion of the dash (2 screws)
the blinkers are way up under the dash by the parking brake.....way up you have to get on your back and move wires to see it if the flasher still works a little you can hear it.....again its way up there but you dont have to remove anything to get to it.
I just changed mine it took 10 times as long to find it as it did to replace it