Question about 2005 Ford Focus

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High beams wont come on !!

I notice the when I turn My headlamps on High Beam that the indicator light comes on but no High Beams!!! I have checked all relays and fuses. I also did open and close circuit test to the bulb connectors as well as the bulb its self. There was not power coming in but there was a complete circuit. Could someone tell me why this is happening and the same situation is going on with my Fog lamps. They all went out at the same time..smh

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  • Ford Master
  • 12,206 Answers

What relay's an fuse's ? open and close circuit test to the bulb connectors ??????? Voltage testing with a DVOM - digital volt ohm meter !
B+voltage going into the multifunction switch ? Fuse F2.59 7.5 amp located in the central junction box . Green with red trace goes to mulitifunction switch (high beam ) pin #6 , Pin#7 multifunction switch green with yellow trace goes to control (energize ) High beam relay . Control side high beam relay grounds at G103 ! High beam relay located in the battery junction box . Do you know how to test for B+ voltage ? Forget this open and close circuit test . Voltage drop testing is the correct way to test a electrical circuit , the circuit has to be energized .
Do you know what a wiring diagram is ? Did you view a wiring to know what you were testing ? If know ,you can't say you have a compleat circuit. Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info ,under system click on lighting ,then under subsystem click on Head lamps . Click the search button then the blue link . Using a volt meter test .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Electric Testing Techniques You Need to Know
The high beam relay is c1050 ,thats the only one you need ! Do you know about relays ?
VEHICLE RELAYS Operation Diagnosis

Posted on Jul 05, 2017

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Posted on Jan 02, 2017

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SOURCE: high beams wont turn on.

First place to start is with headlight switch. I did have a case many years ago when both high beams were blown out at once, but this is rare. When you have the headlight switch out, jump power from te low beams to the high beam contacts. If high beams come on, replace switch.
Bill

Posted on Nov 19, 2008

dttech
  • 4803 Answers

SOURCE: 2005 Ford Focus ZX3 SES, the blue high beam

It sounds like you are confused about how your headlamp system is supposed to work. The DRL does not run on the High beam circuit, it runs on the low beam circuit. The fog lamps are supposed operate with the park lamps and also with the low beams, not the high beams. From your description, I would say that your system is operating as designed and you are having trouble telling High from Low. (Don't feel bad, that is why high beam indicators were invented in the first place.)

Posted on May 08, 2011

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2007 chev sub head lights wont turn on


Do you know anything about automotive electronics ? Electronic control modules .
Headlamp ON/OFF control is determined by the body control module (BCM) by a signal on the headlamp switch on input circuit when the headlamp switch is in the HEAD position. When the headlamp switch is in the AUTO position, the BCM determines headlamps ON/OFF by the voltage from the ambient light sensor.
If the headlight switch is left in the ON position, the inadvertent power control feature will turn OFF the headlights approximately 10 minutes after the ignition switch is turned to the OFF position. If the driver places the headlight switch in the ON position after the ignition switch has been turned OFF, or if the ignition switch is in the ACCY position, the headlights will remain ON until turned OFF or the battery runs dead.
The high beam indicator is illuminated when the instrument cluster receives a GMLAN serial data message from the BCM that the high beams are illuminated.
High Beams
The high beam headlamps receive voltage from the headlamp high relay located in the underhood fuse block. The BCM controls the relay on the headlamp high beam relay control circuit. High beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is grounded, the BCM grounds the headlamp high beam relay control circuit, illuminating the high beam headlamps. The right and left high beam circuits are independent and are fused independently in the underhood fuse block.
Low Beams - Standard
The low beam headlamps receive voltage from the headlamp low beam relay located in the underhood fuse block. The BCM controls the relay on the headlamp low beam relay control circuit. Low beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is open, the BCM grounds the headlamp low beam relay control circuit, illuminating the low beam headlamps. The right and left low beam circuits are independent are fused independently in the underhood fuse block.

Hooking up a factory scan tool an checking DTC'S - diagnostic trouble codes would be the very first step in trouble shooting this problem .
DTC B257A 00: Headlamp Switch Input Signal Mismatch
DTC 2575 00: Headlamp Control Circuit

Jun 30, 2017 | Cars & Trucks

1 Answer

Hi my name is Larry I have a 1998 Pontiac sunfire & my problem that I have is I have low beam. But no high beam.


It's probably the switch , but testing to know for sure is alwasy a good idea .

Headlamps Inoperative - High Beams
Step
Action
Value(s)
Yes
No
1
Did you perform the Daytime Running Lamps (DRL) System Check?
--
YES - Go to Step 2
NO - Go to Daytime Running Lights (DRL) System Check
2
Disconnect the turn/hazard headlamp switch connector C1.
Connect a fused jumper between terminal B of the turn/hazard headlamp switch assembly harness connector C1 and ground.
Do the high beam headlamps operate?
--
YES - Go to Step 3
NO - Go to Step 4
3
Replace the turn/hazard headlamp switch assembly.
Did you complete the repair?
--
Go to Daytime Running Lights (DRL) System Check
--
4
Repair the open in CKT 1200 between the turn/hazard headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?

Daytime Running Lights (DRL) System Check
Step
Action
Normal Result(s)
Abnormal Result(s)*
1
Turn the headlamp switch to the HEAD position.
Turn the headlamp dimmer switch to the LOW position.
The low beam headlamps are ON.
The high beam headlamps are OFF.
Headlamps Inoperative - Low Beams
2
Turn the headlamp switch to the HIGH position.
The high beam headlamps are ON.
The high beam indicator is ON.
The low beam headlamps are OFF.
Headlamps Inoperative - High Beams
3
Turn the headlamp switch OFF.
Turn the ignition to ON.
Disengage the parking brake.
The high beam headlamps come ON at a reduced intensity in approximately 30 seconds.
Daytime Running Lamps (DRL) Inoperative, Headlamp Switch Operates Normally
* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.

Jan 13, 2017 | 1998 Pontiac Sunfire

1 Answer

2010 impala high beams do not come on, light on dash comes on, replaced bulbs still don't work, checked all fuses, look good


High Beam Headlamp Operation
Battery voltage is applied at all times to the coil and switch sides of the HIGH BEAM PCB Relay located in the underhood fuse block. When the headlamp dimmer switch is placed in the high beam position, the headlamp dimmer switch signal circuit to the BCM is pulled low signaling the headlamp high beam request. In response to this signal, the BCM applies ground through the high beam relay control circuit energizing the high beam relay. With the high beam relay energized, battery voltage is applied through the switch side of the relay, the left and right high beam fuses, and the high beam supply voltage circuits illuminating the high beam headlamps. At the same time the BCM sends a GMLAN serial data message to the instrument panel cluster (IPC) requesting the IPC to illuminate the high beam indicator. Ground for the left headlamp is provided at G101 and the right headlamp at G100.

Nov 23, 2016 | 2010 Chevrolet Impala

2 Answers

2005 Ford Focus ZX3 SES, the blue high beam indicator in the dash comes on with low beams, and goes off with high beams. The indicator is on at the wrong time! I have tried the following: The turn signal...


It sounds like you are confused about how your headlamp system is supposed to work. The DRL does not run on the High beam circuit, it runs on the low beam circuit. The fog lamps are supposed operate with the park lamps and also with the low beams, not the high beams. From your description, I would say that your system is operating as designed and you are having trouble telling High from Low. (Don't feel bad, that is why high beam indicators were invented in the first place.)

May 08, 2011 | 2005 Ford Focus

1 Answer

My high beams won't turn off, even when my truck is not on. 05' Chevy Silverado 1500


The headlamps are controlled by the Body Control Module (BCM) The first thing I would check for is the Headlamp Hi Relay. It is located in the underhood fuse/relay box. If pulling the relay out turns your high beams off, try taking out the low beam relay and putting it in the high beam position. If the headlamps stay off, try plugging the high beam relay into the low beam position. If the low beams now come on, the relay is shorted.

If none of this works, I would recommend scanning your BCM to see if there are any fault codes.

Feb 05, 2011 | Chevrolet 1500 Cars & Trucks

1 Answer

Low beam headlamps wont turn on change bulbs and checked fuses and still wont come on.


did you check for a relay in your fuse panel? there should be a relay that controls your low beams and one for your high beams. check for that and then if high beams are working swap it with low beam relay. if your problem switches to low beams working and high beams not working replace the bad relay.

Jan 26, 2010 | 1998 Ford Explorer

1 Answer

How can i disconnect the high beams because when i turn my normal lights on the high beams come on. I need to know how I can disconnect them.


there are 3 wires going to each headlamp,a ground,a low beam,and a high beam.. cut the high beam wire, and do both sides .and if you want high beams to work,wire both sides to a single throw double pole switch for the high beams to turn on and off.

Jul 22, 2009 | 1991 Toyota Tercel

1 Answer

1994 ford f-150 with day time running lights headlightnot working


Daytime Running Lamps
The daytime running lamp (DRL) system is designed to turn the high beam headlamps on, with a reduced light output, and without illuminating the high beam indicator lamp in the instrument panel. You have a DRL Module.
The multifunction switch is the stalk on your column.

This is 96 F150 circuit. Don't have 94.

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Symptom Chart, Headlamps HEADLAMPS Condition Possible Source Action
  • Headlamps Inoperative
  • Circuitry open/shorted.
  • Damaged headlamp switch.
  • Blown fuse.
  • GO to Pinpoint Test A .
  • Headlamps On Continuously
  • Circuitry open/shorted.
  • Damaged headlamp switch.
  • GO to Pinpoint Test B .
  • High Beams or Low Beams Inoperative
  • Circuitry open/shorted.
  • Damaged multi-function switch.
  • GO to Pinpoint Test C .
  • One High Beam or One Low Beam Headlamp Inoperative
  • Circuitry open/shorted.
  • Damaged connector.
  • Headlamp bulb damaged.
  • GO to Pinpoint Test D .
  • Flash-to-Pass Inoperative
  • Blown fuse.
  • Circuitry open/shorted.
  • Damaged multi-function switch.
  • GO to Pinpoint Test E .



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Feb 25, 2009 | 1994 Ford F150 Styleside Supercab

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