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The old hazard switch started buzzing and the turn signals stopped working. The abs and airbag lights both came on and won't go off. I replaced the hazard switch and the turn signal switch. I get 7 volts at the fuse and if I put 12volt to the fuse the turn signals work. I was told it was prob a bad ground but I'm not sure where it is. Can someone please help I need the car
If you only have 7 volts at that fuse your problem is in the power side of the circuit ! You need a power distribution diagram to find where that fuse gets it's power from , you have unwanted resistance in that circuit . It's not a ground problem , you need to do voltage drop testing on that circuit ! Do your brake lights work ? The power for the turn signal , ABS , Stop , an SRS fuse's in the left side instrument panel fuse block come fro the ignition switch ! Your ignition switch may be the problem ! SRS is air bag system !
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Any ideas on what else to check?
Yeah, hook up a professional grade scan tool an check for DTC'S -diagnostic trouble codes in the BCM - body control module. Seeing how it controls (turns on) these lights. Turn/hazard indicators flashing fast means a bad bulb or short circuit somewhere.
DTC B3949: Right Front Turn Signal Circuit
Circuit/System Description
Ground is applied at all times at G200 to the turn signal/multifunction switch. The turn signal lamps may only be activated with the ignition switch in the ON or START position. When the turn signal/multifunction switch is placed in either the TURN RIGHT or TURN LEFT position, ground is applied to the body control module (BCM) through either the right turn or left turn signal switch signal circuit. The BCM then applies a pulsating voltage to the front and rear turn signal lamps through their respective control circuits. When a turn signal request is received by the BCM, a serial data message is sent to the instrument panel cluster (IPC) requesting the respective turn signal indicator be pulsed ON and OFF.
DTC B3951: Right Rear Turn Signal Circuit
DTC B3951 will set when the BCM detects a short to ground or an open/high resistance in the RR turn signal control circuit.
A electronic control module ,BCM body control module or a SJB - smart junction box ford calls their body control module . Principles of Operation
The smart junction box (SJB) monitors the multifunction switch position by sending multiple voltage reference signals to the multifunction switch. When the multifunction switch is in the LH or RH TURN positions, or the hazard lamp switch is engaged, that input signal is routed to ground.
When the SJB receives a request for a turn signal or hazard lamps, the SJB supplies voltage to the appropriate turn lamps.
The hazard lamps are inoperative/always on
Circuitry
Hazard lamp switch
SJB
Go To Pinpoint Test O
Pinpoint Test O: The Hazard Lamps Are Inoperative/Always On
Refer to Wiring Diagrams Cell 90 , Turn Signal/Stop/Hazard Lamps for schematic and connector information.
Normal Operation
The smart junction box (SJB) sends a voltage reference signal to the hazard lamp switch through circuit CLS32 (BN/YE). When the hazard switch is engaged, the voltage signal is routed to ground through circuit GD116 (BK/VT). When the SJB detects a request for the hazard lamps, the SJB sends voltage to the appropriate turn lamps.
DTC B1875 - is an on-demand code that sets when the SJB detects a short to ground from the hazard lamp switch input circuit.
There is a good possibility that the hazard warning and directional signal lights have nothing to do with the starting or operation of the engine. There are many things that might cause the car to fail to start. The battery must be fully charged, and in good working condition. No corrosion on the terminals. good solid connections. When you turn the key the starter motor should turn the engine over. If that works the carburetor will need gas. If you have gas and spark, the engine should run. Hope that helps.
Turn signals work with the tail lights and parking lights on the front. You should turn on the Head lights and check to see if the tail lights and parking lights come on. You will also want to check to see if the flasher is plugged in. All the light bulbs must be plugged in and working to operate the flasher for the turn signals. good luck
First check turn signal fuse and relay if, they are good then try pressing on and off the hazard switch while turning the signal switch on.If signals start to work replace hazard switch.If hazard switch is good then replace turn signal switch.
It sounds like you have at least two bulbs out in the front. I suspect that both turn signals did not stop at the same time? Check the front bulbs. Many turn signal bulbs have two filiments; one for parking lights and the other for turn signals. The same filiment is used for turn signals and hazards.
Another possibility is that there is a bad or broken ground wire in the front?
Finally, it could be the turn signal switch.
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
These are differnt issues. The Trac off light is on because the ABS is on most common reason is because of a bad abs sensor which is part of the wheel bearing unless there is any damaged wiring.Your check engine light is on for another reason there could be many possibilities.The turn signals may be the hazard switch or turn signal switch. You should take to a repair facility that has a scan tool to tell you what are causing the abs and engine lights to come on.
Seems your flasher is going out. If i am correct the switch for your hazard lights is also your flasher. One way to find out is when it stops working tap the hazard light switch and see if it starts to work again. If so there is your problem. Hope this helps
The turn signal flasher is built in to the hazard switch. They are common for going bad. If the turn signals quit again, try pushing the hazard switch on and off a bunch of times really quick. If the turn signals start working again, replace the hazard switch
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