Question about 1998 Ford Econoline

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1998 e-150 power locks are stuck in the unlock mode

The power lock system is stuck in the unlock mode. When I pull fuse 5 (20A) and reinstall it, the power locks energize the unlock mode and they stay in that mode. The normal 12 volts on the unlock wire is pulled to zero volts, indicating the module is stuck in this mode.

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The rear door lock/unlock switch was the problem. When I took it apart, I found the wire connectors were corroded. I cleaned them up and it is now functioning well.

Posted on Jun 21, 2009

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Posted on Jan 02, 2017

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2002 yukon xl .My locks & alarm system dont work ! What do i do ? I checked fuses also


Power Door Locks Inoperative - All Doors and Switches ?
The MIR/LOCK fuse supplies battery positive voltage for the power mirrors, power door lock switches and the memory seat switch (if equipped). If the MIR/LOCK fuse is open, all systems on the fuse would be inoperative. The fault could be a short to ground in the battery positive voltage circuit, however, a short to ground in the power mirror motor control or the memory seat control circuits could also be the cause if the fuse opens after any of the switches are activated. If a short to ground exists in either the door lock or unlock relay control circuits, a DTC (B3137 or B3147) would set when the BCM commands a lock or unlock function.
Did you perform the Power Door System Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - Door Systems

2

Actuate all door lock switches to both the lock and unlock positions.
Did all the doors lock and unlock?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3

3

Did any of the doors lock and unlock from any of the switches?
Go to Power Door Locks Inoperative - One Door or Switch
Go to Step 4

4

  1. Install a scan tool.
  2. With the scan tool, command the doors to lock and unlock.
Did the doors lock and unlock?
Go to Step 12
Go to Step 5

5

  1. Remove the door lock relay.
  2. With a test lamp connected to a good ground, test the battery positive voltage circuits for the door lock relay at the fuse block.
Did the test lamp illuminate?
Go to Step 6
Go to Step 13
The Content Theft Deterrent function provides the theft deterrent by sounding the horn and flashing the headlamps and the park lamps when there is an unauthorized vehicle entry or there is tampering detected.
SECURITY Telltale The SECURITY telltale on the instrument cluster is controlled by both the VTD system and the CTD system.
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The VTD system commands the instrument cluster to control the telltale only when the ignition switch is ON. The VTD system uses the telltale as a malfunction indicator. If a DTC is present in the VTD system when the ignition is ON, the telltale will be illuminated.


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The CTD system commands the instrument cluster to control the telltale only when the ignition switch is OFF. The CTD system uses the telltale to identify system status.


-
Telltale FLASHING -- The system is in standby mode. The system is not ready to arm (a door is open).


-
Telltale ON STEADY -- The system is in delay mode. The system is ready to arm and is executing a time delay of 15 seconds before turning the lamp OFF and transitioning to armed mode.


-
Telltale OFF -- The system may or may not be armed.
Body Control Module (BCM) The body control module (BCM) monitors several inputs in order to arm and disarm the CTD system. The BCM controls the alarm function outputs. When the BCM detects an unauthorized entry (any door opened), the BCM applies ground to the horn, the park lamp and the headlamp relays. The BCM will send messages to the security telltale in the instrument cluster through the Class 2 serial data link. The BCM has the following 8 basic modes for operating the CTD system. The more detailed descriptions are below.
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Off state


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Idle state


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Disarmed state


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Ready-to-arm state


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Arm initiated state


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Arm delay state


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Armed state


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Alarm state

The BCM has the following 6 discrete inputs in order to monitor the CTD system:
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Ignition 1


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Driver door latch (door jamb) switch


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Passenger door latch (door jamb) switch


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Door lock relay


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Door key switch


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Passenger door unlock relay

The BCM applies ground once per second for approximately 2 minutes, or until a valid input to disarm the system is received by the BCM.
Check the door lock relay !

Jun 16, 2016 | Cars & Trucks

1 Answer

Center Differential Lock Stuck


Yes it will, once no power is going to it it should or it could remain locked as well Give it a try . But you should have a look at the relay

1 2
3 4

that is what the pins should look lik 1 - 4 should power it
try grounding pins 1 - 4 this should lick or unlock the diff..

Jul 15, 2008 | 2002 Lexus LX 470

1 Answer

How do you reset the alarm system on a 98 olds silhouette after it triggers without the remote entry


Theft Deterrent Arm/Disarm Modes
Important: Although mode 2 provides increased security, the content theft deterrent system disarms only by pressing unlock on the keyless entry transmitter. This can pose a problem if the keyless entry transmitter is damaged, lost, or inoperative for any reason while you attempt to disarm the content theft deterrent system.
Mode 1: The system arms when you lock the doors with the keyless entry transmitter. The system disarms when you unlock the left front, right front, or liftgate door with the key or the keyless entry transmitter. The system does not arm when you lock the doors with a power door lock switch.

Mode 2: The system arms when you lock the doors with the keyless entry transmitter. The system disarms when you unlock the doors with the keyless entry transmitter. The system does not disarm when you unlock the doors with the key.

Mode 3: The system arms when you lock the doors using a power door lock switch or the keyless entry transmitter. The system disarms when you unlock the left front, right front, or liftgate door with the key or the keyless entry transmitter.
Changing the Feature Customization Modes
  1. Turn off the IP dimmer switch.
  2. Turn the ignition switch to the LOCK position.
  3. Remove the BCM PRGRM fuse.
  4. Turn the ignition switch to the ACC position. The BCM flashes the fasten belts indicator and sounds the chime 4 times, which indicates that BCM type 4 is installed on the vehicle. At this point, the BCM has entered the feature customization mode.
  5. In order to change the theft deterrent/shock sensor mode, turn the headlamp switch from OFF to PARK and back to OFF.
  6. The BCM flashes the fasten belts indicator and sounds the chime a number of times equivalent to the theft deterrent/shock sensor mode. A transition past mode 4 repeats the sequence starting with mode 1.
  7. Complete the following steps in order to change the theft deterrent arm/disarm mode:
6.1.
Insert the key in the left front, right front, or liftgate door lock cylinder.


6.2.
Rotate the key from the center to the unlock position.


6.3.
Press the horn button on the remote keyless entry transmitter.


6.4.
Count the number of chimes that you hear. The number of chimes tells you which mode you have set.


6.5.
Press the horn button again in order to change the mode. Continue to press the button until you hear the number of chimes that indicates the mode that you want.


6.6.
Turn the key back to the center position and remove the key from the door key cylinder.

In order to exit and save the current feature customization modes use the following procedure:

  1. Turn the ignition switch to the LOCK position.
  2. Reinstall the BCM PRGRM fuse.
If you are unable to change locking modes Theft Deterrent System Feature Customization Inoperative

Aug 25, 2015 | Cars & Trucks

1 Answer

2008 suburban Stuck Lift Gate Lock


I have a 2008 Suburban with the power liftgate disabled. I have had the power latch stop working, and the BCM report that the rear access open when it is closed (both gate and glass). Somehow the liftgate module thinks the gate is open, so I cannot open the gate at all, and the latch and rear wiper will not work. To reset the control module I pulled the liftgate fuse (#20) in the instrument panel fuse box, turned the car on, off, reinstalled fuse, turned car on, unlocked doors using drivers side switch, and the power latch will function again - at least for a while.

Jun 05, 2013 | 2008 Chevrolet Suburban

1 Answer

How to take automate car alarm off silent mode


{: ) When armed, the content theft deterrent (CTD) system is designed to deter vehicle content theft by pulsing the horns and exterior lamps for approximately 30 seconds when an unauthorized vehicle entry is detected.

An unauthorized entry can be any of the following with the CTD system armed:
• When any door is opened without first being unlocked using the keyless entry transmitter • After a battery reconnect, if the battery was disconnected with the CTD system armed
Disarming an Armed System/Silencing an Alarm
If system arming has been requested by the power door lock switch or the keyless entry transmitter, it must be disarmed.
Important: Using the power door unlock switch or manually unlocking the doors does not disable the content theft deterrent (CTD) arm mode. Also, disconnecting the battery or pulling fuses does not disable the arm mode, since the BCM stores the CTD mode status in memory.
• To disarm the CTD system in standby mode, perform one of the following: - Press the UNLOCK button on the keyless entry transmitter. - Insert a valid key into the ignition and switch to the ON position. • To disarm the CTD system in the armed mode (non-event) or when activated (during an alarm event): - Press the UNLOCK button on the keyless entry transmitter. - Insert a valid key into the ignition and switch to the ON position Locking the Vehicle Without Arming the CTD System Locking the vehicle may be accomplished without arming the content theft deterrent (CTD) system. Use of the manual door locks or using the key to lock the doors will lock the vehicle, but will not arm the CTD system.

Apr 23, 2011 | 2007 Chevrolet Tahoe

1 Answer

I have a 2000 pontiac trans am. when i set my alarm my haedlight pop up. they never use to. replaced module,and headlight motors,still didn't fix it.


In your owners manual on pages 2-19 and 2-21 tells you how to change this.

Entering Programming Mode
1. Turn the ignition key to RUN, then to OFF. This will
disarm the content theft-deterrent/alarm system
(if equipped).
2. Remove the RADIO fuse. This fuse is located in the
main fuse block which is located on the left side of
your instrument panel. The radio fuse is on the lower
right-hand corner of your instrument panel. See
"Fuses and Circuit Breakers" in the Index.
3. Turn the ignition key from OFF to RUN three times
quickly (within five seconds). The vehicle will
respond by locking the doors, unlocking the driver's
door and releasing the hatch. Your transmitter is now
ready to match the vehicle. Leave the ignition
in RUN.
4. Press and hold the LOCK and UNLOCK buttons on
the first transmitter for 15 seconds. The vehicle will
respond as in Step 3.
5. Repeat Step 4 for the remaining transmitters.
6. When you have finished matching all of your
transmitters, replace the RADIO fuse.
7. Check that all transmitters work by pressing
the buttons.

Programmable Modes
Your vehicle can be programmed to one of the
following modes:
Mode 1: All Off (The headlamps will not flash and the
horn will not sound to provide you feedback that a
lock/unlock command has been received by the remote
keyless entry transmitter.)
Mode 2: Horn and Lamps/Lamps (Your horn will sound
briefly and your parking lamps will flash when you
press LOCK on the remote keyless entry transmitter.
Only your parking lamps will flash when you press
UNLOCK.)
Mode 3: Horn and Lamps (Your horn will sound briefly
and your parking lamps will flash every time you push
LOCK or UNLOCK.)
Mode 4: Lamps (Your parking lamps will flash every
time you press LOCK or UNLOCK.)
Mode 5: Lamps/Horn and Lamps/Lamps (Your lamps
will flash upon the first press on LOCK, your lamps will
flash and your horn will sound upon the second press
on LOCK and your lamps will flash upon any press
on UNLOCK.)
Vehicles are delivered programmed in Mode 5.
To change the mode, do the following:
1. Press the UNLOCK button on the remote keyless
entry transmitter.
2. Count the number of chimes you hear. The number
of chimes tells you which mode your vehicle is
set for.
3. Press the UNLOCK button, again, on the remote
keyless entry transmitter until you hear the number
of chimes that correspond to the mode selection
you want.
The mode you selected is now set. You can either exit
the programming mode by following the instructions
later in this section or program the next feature available
on your vehicle.

When programming is complete, turn the ignition to
OFF and reinstall the RADIO fuse.

Sep 20, 2010 | 2000 Pontiac Firebird

1 Answer

Hatch back will not open


With key in hand,hit power door lock switch to lock. Raise release handle & lower. Hit power door lock unlock raise & lower handle. May take a couple times is stuck in limbo between lock & unlock mode.

Jun 07, 2010 | 2001 Volvo V70

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