20 Most Recent 2003 Ford Explorer Sport Trac Questions & Answers


The autolamp system, controlled by the vehicle security module, supplies voltage to the same circuits used by the headlamp switch to power the exterior lamps when low light conditions are detected.
Anyone else have or have fixed this problem some help please???? What fixed someone else's vehicle probably won't fix your's .Electronic's involved . Using service repair info. , wiring diagram's an testing the electrical circuits is how professional Technician's fix electrical system problems , not guessing or looking for magical fixes on web sites or forum's.
Visual Inspection Chart Mechanical Electrical
  • Headlamp switch
  • Battery junction box (BJB) fuses:
    • 1 (60A)
    • 16 (15A)
    • 22 (20A)
  • Central junction box (CJB) fuse 20 (5A)
  • Circuitry
  • Photocell sensor
  • Vehicle security module

Plus hooking up a factory scan tool an checking for DTC'S - diagnostic trouble code's .
Vehicle Security Module Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1695 Autolamp On Circuit Failure Vehicle Security Module Go To Pinpoint Test J . B1792 Autolamp Sensor Input Circuit Short to Battery or Open Vehicle Security Module Go To Pinpoint Test J . B1793 Autolamp Sensor Input Circuit Short to Ground Vehicle Security Module Go To Pinpoint Test J . B2661 Parklamp Relay Output Short to Vbatt Vehicle Security Module Go To Pinpoint Test R . B2662 Parklamp Relay Output Open Circuit Vehicle Security Module Go To Pinpoint Test I . B2663 Headlamp Relay Output Short to Vbatt Vehicle Security Module Go To Pinpoint Test F . B2664 Headlamp Relay Output Open Circuit or Short to Vbatt Vehicle Security Module Go To Pinpoint Test H . Symptom Chart Condition Possible Sources Action
  • No communication with the vehicle security module
  • Circuitry.
  • Vehicle security module.
  • REFER to Section 418-00 .
  • The autolamps are inoperative
  • Circuitry.
  • Headlamp switch.
  • Photocell sensor.
  • Vehicle security module.
  • Go To Pinpoint Test G .

Electric Testing Techniques You Need to Know

2003 Ford... | Answered on Sep 19, 2017


First thing , knowing what all is involved in the cruise control system helps
Speed Control The speed control system is designed to maintain vehicle speed between 48 and 200 km/h (30 and 125 mph).
Normally, when the brake pedal is applied, the speed control module deactivates the speed control system. Under increased brake pedal effort, the deactivator switch, a normally closed switch, will open and remove power to the speed control actuator clutch, releasing the throttle independently of the speed control module.

Principles of Operation
The brake pedal position (BPP) switch is normally closed to ground. When the brake pedal is applied with the speed control system engaged, the BPP switch closes (to battery voltage), putting the speed control in stand-by mode.
NOTE: A redundant brake deactivator (BPA) switch is provided as an additional safety feature.
NOTE: The speed control module is integral to the powertrain control module (PCM).
The clockspring provides the electrical interface between the steering column wiring and the speed control switches in the steering wheel.
The inputs to the powertrain control module (PCM) required to operate the speed control system are the:
  • anti-lock brake (ABS) module
  • digital transmission range (TR) sensor
  • speed control deactivator switch
  • speed control switches
  • vehicle speed signal (VSS)
The inputs to the speed control actuator come from the powertrain control module (PCM).
The outputs of the speed control actuator go to the speed control cable controlled throttle position sensor.

Special Tool(s) 73III Automotive Meter
105-R0057 or equivalent Worldwide Diagnostic System (WDS)
418-F224,

New Generation STAR (NGS) Tester
418-F052, or equivalent diagnostic tool with appropriate adapter cable
Inspection and Verification
  1. Verify the customer concern.
  1. Verify the speedometer operates correctly without using the speed control by test driving the vehicle. If the speedometer does not operate correctly, refer to Section 413-00 .
  1. Verify the stoplamps operate correctly with the ignition switch in the OFF position. If the stoplamps do not operate correctly, refer to Section 417-01 .
  1. Verify the parking brake is not applied and is operating correctly. If the parking brake is not operating correctly, refer to Section 206-00 .
  1. Visually inspect for obvious signs of mechanical and electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Speed control cable
  • Throttle lever
  • Speed control actuator
  • Battery junction box (BJB) fuse 40 (15A)
  • Circuitry
  • Powertrain control module (PCM)

  1. If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • SCP or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for PCM, Go To Pinpoint Test A .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the KOEO Test.
  1. If the DTCs retrieved are related to the concern, go to the Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics.
  1. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.
NOTE: DTC P0703 and DTC P1572 must be repaired before any other DTC.

Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index DTCs Description Source Action P0500 Vehicle Speed Error PCM REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual. P1565 Speed Control Command Switches High/Out of Range PCM Go To Pinpoint Test A . P1566 Speed Control Command Switches Low/Out of Range PCM Go To Pinpoint Test B . P1567 Speed Control Output Circuit PCM Go To Pinpoint Test C . P1568 Speed Control Unable to Hold Speed PCM Go To Pinpoint Test D . P1572 Brake On/Off Failure PCM Go To Pinpoint Test E . P0703 Brake Switch Input Malfunction PCM Go To Pinpoint Test E . IF thier are no codes go to the Symptom Chart

Symptom Chart Condition Possible Sources Action
  • No communication with the powertrain control module (PCM)
  • Battery junction box (BJB) fuse(s):
    • 11 (40A)
    • 40 (15A).
  • Circuitry.
  • PCM.
  • REFER to Section 418-00 to continue communication diagnostics.
  • The speed control switch is inoperative - no DTCs
  • Speed control switch.
  • INSTALL a new speed control switch. REFER to Speed Control Switch - With Remote Audio/Climate Controls or Speed Control Switch - Without Remote Audio/Climate Controls in this section.
  • The speed control is inoperative - no DTCs
  • Low battery voltage.
  • Circuitry.
  • Digital transmission range (TR) sensor (automatic transmission only).
  • Parking brake switch.
  • Go To Pinpoint Test F .
  • The speed control indicator lamp is always on
  • Circuitry.
  • Instrument cluster.
  • Powertrain control module (PCM).
  • Go To Pinpoint Test G .

2003 Ford... | Answered on Jul 07, 2017


There are two relay's for the fog lamps in that relay box . fog lamp isolation an fog lamp relay . You can find a diagram here http://www.bbbind.com/free_tsb.html Enter your vehicle info. year , make , model , engine size . Under system click on electrical distribution , then under sub system click on relay . Hit the search button , then click on the link . Good luck !

2003 Ford... | Answered on Mar 21, 2017


The instrument cluster illuminates the interior lamps when an unlock signal is received from the vehicle security module. The illuminated entry feature will be canceled when any of the following conditions are met:
  • 25 seconds have elapsed since the illuminated entry feature was activated and the interior lamp control is not activated (door ajar or courtesy lamp switch on).
  • The instrument cluster receives a request from the vehicle security module (remote transmitter lock button pressed) and the interior lamp control is not activated.
  • The ignition is in the RUN or START position and the interior lamp control is not activated.
The instrument cluster illuminates the courtesy lamps when any door is open or ajar. The courtesy lamps shuts off when the doors are closed and the illuminated entry feature is not active or when the vehicle speed is greater than 5 mph (8 km/h). The interior lamps are not reactivated until the vehicle speed is less than 3 mph (5 km/h) and a new door open warning lamp signal is received.
The instrument cluster controls the courtesy lamps illuminated entry function by activating the battery saver relay.
The panel dimmer switch is integrated into the headlamp switch and controls the interior lamps by activating the instrument cluster through circuit 1034 (BK/WH).
The vehicle security module sends a signal to the instrument cluster on the UBP network circuit to indicate a request to turn the illuminated entry feature on or off.
The on-demand lamps, glove compartment assembly, homelink module, puddle lamps and illuminated vanity mirrors are controlled by the battery saver relay. The battery saver relay becomes active (relay coil is energized) when the instrument is in the awake mode, or in the sleep mode (relay coil is de-energized).

2003 Ford... | Answered on Nov 28, 2016


First you want to remove the brake caliper assembly, rotor, and then the axle hub. Then you want to take a pry bar between the inner tulip and differential and vigorously tug on it until it pops out. Make sure you have a drain pan to catch any fluid that comes out of the differential, and refill as necessary. the CV shaft should come out and allow you to drop the shaft onto the ground.

When you reinstall the half shaft, give it a few good short jabs to get the snap retainer to pop back into place in the differential. Make sure the shaft is all the way in where the race is inside of the seal. Once you have confirmed the inner tulip has reseated in the differential, then reverse the above procedure.

I am sure you already know this, but PLEASE make sure that if you don't have a hoist to do this job, make sure that it's on a concrete surface with approved jack stands, PLEASE don't trust your life to a hydraulic or screw jack as these things can shift and cause the vehicle to fall on you. This risk is especially great doing this particular job as it requires a lot of tugging and hammering in the event the wheel hub is stuck to the spindle assembly. PLEASE remember, "Safety first". Also wear OSHA approved safety glasses as dirt and or rust can fall in your eyes.

2003 Ford... | Answered on May 18, 2016


The radiator may be defective internally. Flushing may not be enough.

2003 Ford... | Answered on Apr 02, 2016


Try recharge cooling system, check vents to c if there something blocking

2003 Ford... | Answered on Mar 22, 2016


It was clicking fast because it was only operating 2 out of 4 bulbs. You need to use a test light to find out where you are losing the power. It could be any place between the turn signal switch and the lights themselves, including the switch itself.

2003 Ford... | Answered on Mar 20, 2016


Blinking quickly is either a bad bulb or bad circuit/connection. If the bulb works OK when switched to the other side you will probably need to have a mechanic look at it.

2003 Ford... | Answered on Mar 09, 2016


It does so by design and to prevent dieseling.

2003 Ford... | Answered on Mar 05, 2016


jack the vehicle up and put on stands
remove the diff housing as a complete unit
depending on where the crack is it may be possible to have the housing welded up by an accredited engineering shop and if possible have the area properly reinforced to prevent it cracking again

2003 Ford... | Answered on Feb 23, 2016


The timing chain tensioners are located with the timing chain inside the timing cover and usually are not changed unless the timing chain assembly is replaced. Why would you change them?

2003 Ford... | Answered on Dec 29, 2015


Heres a shot in the dark, cheap and easy worth looking at maybe

2003 Ford... | Answered on Nov 28, 2015


I know it sounds a bit difficult but fuel leaking is serious danger so with this id siphon tank dry (don't use a drill pump ) and undo fasteners and hoses/wires that hold it too truck , lowering it to ground , a carefull inspection of approx. area of leak will tell the problem , your looking for cracks in plastic or rubber hoses , these might be very small and fine look closely
if cracks are in the tank , unless you know someone with a ultrasonic welder id replace the tank

2003 Ford... | Answered on Oct 30, 2015


If the tank is right full to the top it could be the filler hose or vent hose leaking at the connection with the tank and if it is not right full it probably has a hole in the side of the tank

2003 Ford... | Answered on Oct 30, 2015

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