QuestionI have a 97 Ford Ranger stepside, it a the 4.0
V-6, automatic trans, this is the second time this has happened to me, when I would go to start the truck it work make a pop and then that would be it nothing works at all no lights, everything doesn't work, the first time this happened I disconnected the battery and put it back after 5 minutes, still nothing. Called Ford dealership they never heard anything about this. Specially when I told them that my 12 volt aux. for my cell phone was working. But when I was going to have the truck towed to the dealership. I went to hit my keyless entry alarm and the passenger door unlocked. Put the key in the ignition and it started. To let you know also when I was having this problem I even tried the remote and everything else possible and nothing worked. But then out of the blue after 12 hours later it worked. My question is that if there is a reset button or something I can do to reset the alarm it is a factory stock ford alarm, but according to ford there is three different ones and I must have the one that shuts down the whole computer. They were no help. Thankyou for your time.
AnswerHello and thanks for the question...I'll try to help.
DESCRIPTION and OPERATION
The theft warning system provides the vehicle with protection from unauthorized entry into the passenger compartment and engine compartment (hood opening). It also protects against engine starting through ignition keylock cylinder tampering. If triggered, the system provides both audio and visual alarm signals and disables the starter circuit.
The system is controlled by a receiver assembly. This assembly also controls the electronic door lock control system functions. System anti-theft functions are:
Perimeter sensing - doors, trunk, hood
Ignition keylock cylinder sensing
Starter interrupt
LED flashing when system is armed
Alarm (horn and lights)
When armed, unauthorized entry into the vehicle is detected by a hood switch or the door ajar switches. The hood switch is monitored directly by the receiver assembly. The door ajar switches are monitored by the Generic Electronic Module (GEM). The GEM module signals the receiver assembly when a door is ajar (opened). If the anti-theft system is armed, this signal will trigger the receiver assembly. The door ajar signal will also prevent arming of the system if a door or liftgate is not fully closed.
Once triggered, the system flashes, the parking lamps, the theft LED indicator, and sounds the horn. In addition, the starter circuit is interrupted until the system is disarmed.
COMPONENTS
The system is composed of the following components:
Receiver assembly
Anti-theft warning indicator (output)
Door/liftgate disarm (input)
Hood switch (input)
Ignition keylock cylinder sensor (input)
Starter interrupt relay (output)
The following components already exist on the vehicle and are also used in the anti-theft system
Horn relay (output)
Parking lamps
Generic Electronic Module (input and output)
Starter relay
Park lamp autolamp/exit delay relay (output)
SYSTEM ARMING
The system is ready to arm any time the ignition switch is turned OFF and the PANIC alarm is off. There are two ways to PREARM the anti-theft system:
Press the remote entry transmitter LOCK button once to lock the doors (with the doors open or closed). If the lock is pressed again within 5 seconds, the horn will either chirp once to indicate all doors are closed and the system is arming, or will chirp twice if any door is open (preventing the system from arming).
Open a door and press the power door lock button to lock the doors. If a door is open, the anti-theft system is prearmed and waiting for all doors to close. The THEFT LED in the instrument panel will light continuously while the system is prearmed. Once all doors are closed, if any were open, the system will be prearmed with a 30 second countdown to become armed. The THEFT LED will remain lit continuously until the system is ARMED. When the system is armed, the THEFT LED will begin to flash for 50 ms every two seconds until the system is triggered or disarmed.
CANCELING THE PREARM SEQUENCE
If the anti-theft system is prearmed and waiting, it will wait only 30 minutes for a door to close. The THEFT LED will remain lit for this time. If a door does not close within 30 minutes, the LED will turn off and the theft system will return to a disarmed state.
An anti-theft system PREARM can also be cancelled before the system is armed by:
pressing the unlock switch on the door
any disarm event
DISARMING THE SYSTEM
NOTE: A perimeter alarm will "shutoff" after 165 seconds, but the system is still triggered and is not disarmed. The starter circuit will remain disabled until the system is disarmed.
An Armed or triggered system can be disarmed by one of the four events listed.
Unlock the doors by pressing the remote entry transmitter UNLOCK button once.
Unlock any door with a key.
Turn ignition to RUN or ACCY.
The remote entry PANIC button will disarm the anti-theft system only when the perimeter alarm is triggered and sounding.
ALARM STATES WHEN BATTERY POWER IS CYCLED
When the receiver assembly is powered the very first time at the vehicle assembly plant the system will be in the DISARMED state. The receiver assembly will remember whether it is ARMED, DISARMED or TRIGGERED in its non-volatile memory. When battery power is removed and then reconnected, the system will return to its state just before the battery was disconnected. If the system is in any PREARM state as described previously, then the system will return to a DISARMED state when battery is disconnected and then reconnected.
Hope this helps,
Erik
