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Jared D
Jared D, ASE Certified Technician
Category: Ford
Satisfied Customers: 1337
Experience:  Shop Supervisor at County Fleet
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2002 Ford Sport Track, anti-theft system preventing vehicle

Customer Question

2002 Ford Sport Track, anti-theft system preventing vehicle from starting. Have tried resetting the system twice. Have a new factory key, anti-theft light blinking about every second or two even when key is out of the ignition.
Submitted: 10 months ago.
Category: Ford
Expert:  Jared D replied 10 months ago.

Good morning,

Let me see if I can help get this one sorted out. To diagnose this system you will need a multi-meter.

Try these steps to diagnose what sounds like a bad transceiver:

1. Check fuse 14 (5 amp) of the Central Junction Box (CJB) for being blown, missing, or poorly connected and service as necessary.

2. If fuse 14 checks to be ok, access the transceiver located under the ignition switch tumbler forward of the steering wheel and check the circuits of its connection.

A. A Dark Green/White wire supplies ignition-fed voltage from fuse 14.

B. A Black/Light Blue wire supplies the transceiver a ground.

C. The Grey/Orange wire and the White/Light Green wire are communication circuits running between the transceiver and the PCM. With the transceiver plugged in and backprobing, both wires should read close to battery voltage with a Digital Volt-Ohm Meter (DVOM) (they will not light a test light).

3. If the transceiver circuits show to be ok and the connection is in good condition, replace the suspect transceiver.

Customer: replied 10 months ago.
Jared can you stay on the line while I do what you recommended.
Customer: replied 10 months ago.
I have a multi-meter. Is the CJB inside the engine compartment or inside the cabin?
Customer: replied 10 months ago.
Also is the transceiver located under the plastic shrouding covering the steering wheel?
Expert:  Jared D replied 10 months ago.

Oh sorry, the CJB is the under hood box.

I'll get a diagram of the transceiver in a sec.

Customer: replied 10 months ago.
Okay
Expert:  Jared D replied 10 months ago.

This one shows a pretty good picture.

Customer: replied 10 months ago.
Thanks, ***** ***** see a 5 amp fuse in the CJB.
Customer: replied 10 months ago.
Any idea how much a transceiver would run?
Customer: replied 10 months ago.
Picture of the CJB in the vehicle
Expert:  Jared D replied 10 months ago.

I'm sorry I just realized that I marked that the CJB is the under hood, it is the under dash. The under hood is the BJB. Sorry! I keep getting pulled away here at the shop. Normally it's quiet around here in the morning.

Customer: replied 10 months ago.
Not a problem. I'm sure you run into this (guys running back and forth between computer and the car they are working on) all the time.
Expert:  Jared D replied 10 months ago.

The transceiver ring is about $50. Usually dealer only.

Customer: replied 10 months ago.
I found fuse 14 (inside the cabin). It was a 10 amp fuse. And it looked good. I'll put a Ohm meter on it though.
Customer: replied 10 months ago.
Yeah it's good. I'm going to go through all the 5 amp fuses to check for continuity.
Customer: replied 10 months ago.
Here's an all important question, if I replace the transceiver will it respond to the existing keys or do I have to have the transceiver programmed?
Expert:  Jared D replied 10 months ago.

This model shouldn't need to be programmed if you replace the transceiver ring. the programming is stored in the PCM rather than the transceiver.

Customer: replied 10 months ago.
Thanks. I'm taking the ring out now.
Expert:  Jared D replied 10 months ago.

Yeah, that's most likely the problem. Let me know if you need any additional info.

Expert:  Jared D replied 10 months ago.

I just wanted to check whether you need any additional info.

If you no longer have any questions please don't forget to rate.

Expert:  Jared D replied 10 months ago.

Please don't forget to rate. We don't get paid if we don't get a positive rating.

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