Question about 2001 Ford Focus

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Burned cable under diode 2 socket at the engine compartment fuse box

I changed the battery to an optima batteries and made a shot circuit because there was a metal that touched both terminals while the battery cable was attach to the battery. Fuses from the engine compartment fuse box and interior of the car are in perfect conditions, car doesn't starts. When key is turn to start, in the dashboard at the milage display it appears alot of dashes. (---- ----) Before the battery change the car started and ran great. please help.

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For many modern computerized cars, there a reset after battery installation. Google for the trick for your particular model and year. Usually mode is to have headlights off, remove battery and wait five minutes before installing the new battery. If the wait is not done, one of the CANs may burn out. On my car, the windows and sun roof need to be opened and closed in a certain sequence. Check to see if the battery is fully charged, starter relay and, any melted insulation on any wires, fusible link okay? Otherwise it sounds like a profession service may be needed, esp. if it's a CAN problem. Test the 2 diodes to see if they are good. If not replace.

Posted on Nov 24, 2013

  • Jesus Yanez
    Jesus Yanez Nov 24, 2013

    I followed the burned cable and its the negative cable for the air compresor



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SOURCE: 1999 Ford Taurus Vulcan V6 troubleshooting not starting no fuel

Ive never seen a car start up just fine after leaving the key on all night. I would try jumping it. If the voltage is too low it wont start.

Posted on Jan 25, 2009

  • 108 Answers

SOURCE: no start condition new battery , good starter,

no starter relay is always at the fuse relay box at the engine compartment. The relay that you hear is the relay for the accessories to turn off the power during starting position.

Posted on Feb 01, 2010

  • 5370 Answers

SOURCE: I have a 1991 F150

One fuse box is under dash and other is in the engine compartment under the hood.If the fuses checked out ok then check the voltage to the ignition harness wires.The ignition harness wire will show 12 volt.It gets power from battery.If the ignition harness wires checked out ok and shows 12 volt then,Check the fuel pump relay and fuse under engine compartment fuse box.If the fuel pump fuse/relay both checked out ok then other possibility can be ECU/PCM fault.ECU/PCM means cars computer.Also known as electronic control unit OR power control module.Also check the EEC= Electronic Engine Control. EEC relay powers up the computer,If this relay is faulty then ecu/pcm will not get power to function,and so car will not get spark. see fig below:---- helpmech_84.jpg
In the engine compartment fuse box check this fuses and relays.If EEC relay is bad, there will be no spark, and no fuel pump operation.PCM: Powertrain Control Module. The module that controls the EEC system. Also called the Computer or ECU.The PCM/ECU is located in the drivers side kick panel behind the bracket with the hood release lever.the PCM Computer (AKA ECU) but it has to come out from under the hood.You will have to take the inter fender loose and pry it apart with a broom handle and pull it out through the gap.But you do not have to remove it to unplug its plug with the 10mm bolt in it for the spark test. ------------ unplug the PCM Computer and see if spark returns.If spark does not return then it is NOT the PCM Computer.If spark does return it is more than likely your problem. But in this case make sure the computer has a good ground on pin #40 & #60 and power on pins #1, #37 & #57 with the key on before you say it is bad.If all relays and fuses checks out ok then its faulty PCM/ECU module.Get it replaced from ford. ------------- So getting this possibilities checked will help.That will pin point towards the faulty part to be replaced.Its either fuel pump relay or fuel pump fuse or its EEC relay ( Also called PCM relay).If all checked ok then this PCM/ECU module.This will help.Thanks.Helpmech.

Posted on Feb 21, 2011

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Hi, I recommend you access the OBD panel to extract the trouble codes. Then send us the trouble codes for further advice. On 850 models the DLC is located in the engine compartment in front of the module box, behind the passenger side headlamp.

  1. Open diagnostic socket cover and install selector cable into socket No. 2 for fuel injection codes or socket No. 6 (except Motronic systems) for ignition codes.
  2. Turn the ignition switch to the ON position.
  3. Enter control system 1 by pressing the button once. Hold the button for at least 1 second, but not more than 3.
  4. Watch the diode light and count the number of flashes in the 3 flash series indicating a fault code. The flash series are separated by 3 second intervals. Note fault codes.

1f there are no fault codes in the diagnostic unit, the diode will flash 1-1-1 and the fuel system is operating correctly.
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The diagnostic system memory is full when it contains 3 fault codes. Until those codes are corrected and the memory erased, the system cannot give information on any other problems.
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Fig. Fig. 1: Push button once for mode 1
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