No , because your vehicle has no BCM . Fords have a vehicle security module that year . If intermittent, possible lose ground wire , door ajar switch
PINPOINT TEST L: THE ALARM SYSTEM DOES NOT OPERATE CORRECTLY
Test Step
Result / Action to Take
L1 USE THE RECORDED DTCS FROM PCM SELF-TESTS
Yes
If DTC B1521 is retrieved, GO to L2 . If DTC B1321, DTC B1398, DTC 1333, DTC B2243 or DTC B2245 is retrieved, REFER to Section 501-14 .
No
GO to L5 .
L2 CHECK FOR A FAULTY HOOD AJAR SWITCH
Yes
>
INSTALL a new hood ajar switch. CLEAR the DTCs. REPEAT the self-test.
No
GO to L3 .
L3 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
Yes
>
GO to L4 .
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
L4 CHECK CIRCUIT 23 (TN/LG) FOR AN OPEN
Yes
>
GO to L5 .
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
L5 CHECK THE ALARM SYSTEM FOR CORRECT OPERATION
Yes
The vehicle security system is operating correctly. CLARIFY the concern with the customer.
No
If the horn does not sound, GO to L6 .
If the parking lamps do not illuminate, GO to L10 .
L6 CHECK THE HORN OPERATION
Yes
GO to L7 .
No
REPAIR the horn. REFER to Section 413-00 .
L7 CHECK THE VEHICLE SECURITY MODULE HORN OUTPUT FUNCTION
Yes
GO to L14 .
No
GO to L8 .
L8 CHECK FOR VOLTAGE TO THE VEHICLE SECURITY MODULE CIRCUIT 645 (WH/LB)
Yes
>
GO to L9 .
No
REPAIR the supply circuit. TEST the system for normal operation.
Sorry it's actually an 02 explorer, I'm trying to help out a friend. Thanks for the great advice!
My vehicle is a buick lucerne 2007 not a ford
Yea, with a scan tool to check sensor data parameters for the alarm system would be the best way to diagnose this . You can find one that works for fords only . Forscan an it's free ,all you need is a wifi connector that plug's into the DLC. connector under the dash . You can get the hook up on ebay or amazon.https://youtu.be/UL4uAdXAXKE
02 explorer , I would think driver door key switch sensor. Have seen a few of these cause this problem .
×
Some of the sensors are going bad or are too sensitive. A motion sensor or lock sensor can be intermittently setting it off. Do you have access to a scan tool ?
Yes I have access to a basic scan tool but nothing high dollar
I also meant to add its actually an 02 not an 04, are the sensors and setup the same? Thanks so much for all the advice, I'm so glad I found this site and you guys are on here!!!!!
Also , check the battery both engine off and engine running with headlights on and blower motor on high. Let me know the voltages. A low voltage battery can trigger the security alarm.
Disconnect fuel pump relay so it won't start . Nothing puts a load on the system like the starter cranking test. If voltage drops below 10 volts bad is bad . Engine running voltage should be 13.1 to 14. 1
Battery is bad . no bad is bad .
×
?€¢
The ignition is in the ON position.
?€¢
The vehicle is shifted out of PARK.
The BCM will then unlock the doors when the ignition is placed in the OFF position. Do the exterior lights flash as well as the horn sounding ?
Body Control Module (BCM)
The
Content Theft Deterrent
system is an internal function of the Body Control Module (BCM) which utilizes class 2 serial data and various switch input information to perform CTD functions. When the BCM detects an unauthorized entry, it activates the horns and exterior lamps.
When the BCM detects an unauthorized entry, the BCM enters the alarm mode. The BCM activates the horns and exterior lamps for 2 minutes. This is followed by a 3 minute time-out with the horn no longer active. If no new intrusions are detected after the time-out, the horn is not active. The system must be disarmed or the intrusion condition removed after the time-out for the system to exit alarm mode.
If it is the horn that keeps going off, pull the horn fuse, that should stop it till you figure the problem. The bcm can ground the control side of horn relay as well as the horn switch. I'm not saying the bcm is faulty, I don't know, at the moment.
361 views
Usually answered in minutes!
Is The system the same on a 2002 as it is on a 2004?
×