Question about 1997 Ford Expedition
Posted by Anonymous on
Smart Junction Box (SJB)
ItemPart NumberDescription1-Electrical connectors (part of 14A005)2W706287 - S901SJB bolts (2 required)314B207SJBRemoval
CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.
NOTE: Prior to the removal of the module, it is necessary to upload the module configuration information to a scan tool. This information must be downloaded into the new SJB after installation. For additional information, refer to Section 418-01.
NOTE: The tire pressure monitoring system (TPMS) functionality is integral to the SJB.NOTE: A new SJB is delivered in "manufacturing mode" with 7 pre-set DTCs. These 7 manufacturing mode DTCs require that a successful configuration of the SJB occurs, then a successful TPMS sensor training occurs, then a successful self-test occurs, including the clearing of all DTCs. All of this is required in order to clear the 7 manufacturing mode DTCs. The 7 manufacturing mode DTCs are as follows:
B2477 (Module Configuration Failure)B106D (Tire Pressure Monitor System Initiators Not Configured) This DTC is present when the SJB is not configured, even on applications that are not equipped with initiators.B2868 (Left Front Tire Pressure Sensor Fault)B2869 (Right Front Tire Pressure Sensor Fault)B2870 (Right Rear Tire Pressure Sensor Fault)B2871 (Left Rear Tire Pressure Sensor Fault)C2780 (ECU in Manufacturer Sub-state)Upload the module configuration information from the SJB into the scan tool. For additional information, refer to Section 418-01.Disconnect the battery. For additional information, refer to Section 414-01.Remove the pin-type retainer and the RH A-pillar lower trim panel.Remove the glove compartment. For additional information, refer to Section 501-12.Disconnect the 7 electrical connectors.Remove the 2 bolts and the SJB.Installation
Position the SJB and install the 2 bolts.Tighten the screws to 2 Nm (18 lb-in).Connect the 7 electrical connectors.Position the RH A-pillar lower trim panel and install the pin-type retainer.Install the glove compartment. For additional information, refer to Section 501-12.Connect the battery. For additional information, refer to Section 414-01.NOTE: When successful, this step provides the calibration necessary for the SJB operation and clears DTCs B2477 and B106D. The clearing of these DTCs indicate the calibration data has been successfully downloaded to the SJB.Download the SJB configuration information from the scan tool to the SJB. For additional information, refer to Section 418-01.NOTE: When successful, this step clears DTCs B2868, B2869, B2870 and B2871. The clearing of these DTCs indicates the SJB has recognized the tire pressure sensors during the training procedure.Train the tire pressure sensors. For additional information, refer to Section 204-04.NOTE: DTC C2780 will not clear if any other DTCs are present in the SJB.Carry out the SJB on-demand self-test by clearing DTCs and then retrieving DTCs to confirm all DTCs have been cleared.
The fuses you want to check are in the smart junction box. Hopefully you can find it from instructions. I was just trying to give you location for those fuses. Don't worry about tire pressure sensors info.https://s9.postimg.org/kqyabqqlb/smart_junction_box.jpg
I hope you can click on the link for fuses, if not, type into address bar. The two fuses at top left, are hot all the time, not only check the fuse, use a test light and check voltage on fuse circuits. With shift interlock the brakes lites needs to work. I can't rule out smart junction box or a wiring circuit somewhere? Any applicable trouble codes?
Posted on Jun 29, 2017
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Posted on Jan 02, 2017
It is not the multifunction switch. The power feed goes thru the brake switch before the multi function. You have no power the the brake switch because your shift interlock is not allowing you to shift it. I'll look up the wiring diagram and repost with a solution.
Posted on Apr 25, 2009
One of your power wires is grounding to something, whether through a switch or relay.
I had wires fuse together that had the same effect in a vehicle years ago. Constantly blew fuses and happened to find the 2 wires fused under the dash in the steering console.
This is probably not your problem but there are very few things that cause those fuses to blow that rapidly.
Electrical is difficult to troubleshoot over the net though. Find out what the fuse goes to and try to follow the wires from point A to B as much as you can. May be as simple as a wire that the insulation is rubbed off or cut at a point and touching the body.
Posted on Oct 18, 2009
The best thing to do is go to any Advance or Auto Zone and buy the Chilton Repair book for this vehicle and it will have step by step instuctions for any repair that you may need. It also has pictures too. They cost around 19.99 but this book is the best for any repairs that you may ever have. Hope this helps.
Posted on Dec 06, 2009
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May 20, 2017 | 2007 Ford Fusion V6
Aug 10, 2013 | Ford Explorer Cars & Trucks
Do the brake light work? No brake lights and it won't shift out of park. Check your fuses and check for loose wires. Check your brake light switch. If that has failed, you won't be able to get out of park. The other one if the shift lock solenoid which is in the shifter assembly. The brake shift interlock switch prevents the car being shifted from park unless the brake pedal is depressed. Try to apply power/ground to the proper wires & see if it will activate.. If it does, then the problem is between the brake light switch & that solenoid. Could be the wires or the switch.Make sure the shifter cable is still held down in place at the shifter assembly & under the hood. It is the interlock switch that you hear/feel clicking.It is for the prior generation but may still apply.
Good Luck and hopefully you soon will be on the road again...;-)
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Aug 05, 2011 | 2000 Ford Expedition
Check to make that the brake lights are working - shift interlock is in the same circuit - could be a bad fuse.
You can try turning the key (with engine off) o
to the first position (Unlock) shift to neutral to start vehicle and then shift to "Drive or Reverse"
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