Question about 2001 Ford Expedition

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Will a bad key ignition switch effect the inderctor light on the dishboard

Changed out ignition switch

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New keys with cylinder may not have a transponder chip , or new keys will need to be programmed. you will require two keys equipped with proper transponder for your vehicle, and either new keys cloned with the old transponders. If you have lost the original keys , you will need someone to remove the original keys from the pcm , than marry the 2 new keys to the pcm. If you have an original key , try placing it by the lock cylinder when attempting to start with the key supplied with the new ignition cylinder.

Posted on Nov 09, 2014

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2001 saturn lost keys to it. Got it to crank cut right back off secrity lights on bought a brain box for it and got 2keys with it. Still want crank I need to know what to do t could the box be bad ..


No ,the box is probably not bad , but you need to have it programmed . The dealer is the only one that can do that ? The keys don't matter .
The passlock sensor mounted to the ignition switch assembly is located inside the upper right side of the steering column. The passlock sensor contains two hall effect sensors: a tamper hall effect sensor and a security hall effect sensor. The tamper hall effect sensor is mounted on top of the security hall effect sensor. Should someone attempt to defeat the system by use of magnetic experimentation, the tamper hall effect sensor will activate first.
The passlock system is a vehicle theft deterrent system which deters drive-away vehicle theft by disabling engine operation if the ignition lock cylinder is not rotated with the proper mechanically cut key.
The passlock system is made up of an ignition switch assembly, passlock sensor, body control module (BCM), instrument panel cluster (IPC), and a powertrain control module (PCM).
The ignition switch contains a magnet mounted on the lock cylinder and a passlock sensor assembly which consists of security hall effect sensor, tamper hall effect sensor, and output resistors. A drill proof metal shield is also staked over the sensor housing.
The passlock sensor mounted to the ignition switch assembly is located inside the upper right side of the steering column. The passlock sensor contains two hall effect sensors: a tamper hall effect sensor and a security hall effect sensor. The tamper hall effect sensor is mounted on top of the security hall effect sensor. Should someone attempt to defeat the system by use of magnetic experimentation, the tamper hall effect sensor will activate first.
The BCM has the passlock controller integrated into it which controls the majority of the security systems logic. The BCM reads the data from the passlock sensor continuously. If the data is correct and has been received by the BCM within a specified time, the BCM will send a coded password to the PCM. The PCM will then allow the fuel injectors to operate.
The coded password for the security system is sent from the body control module to the PCM via the class 2 data link. If the password is correct and received within the specified time, the PCM will allow the fuel injectors to operate.
Sorry but you can't just replace parts , you need to know how the system works . You need to take this to a ASE certified repair facility that knows how it works .

Oct 10, 2015 | Saturn Cars & Trucks

1 Answer

Just changed ignition switch in 1995 Chevy Silverado 4x4, shift indicator light won't come on. Rpm and speedometer not working therefore transmission not shifting correctly. ????????


All of those problems happen with a bad ignition switch so you must have bought a bad one from auto zone or you connected it wrong.Did you change the ignition switch or the key cylinder in the steering column because there is a difference?The ignition switch supplies power to the fuses.

Apr 06, 2015 | Chevrolet Silverado Cars & Trucks

2 Answers

I have power to my starter and I have power to my ignition. But when I turn the key nothing happens


first try to start in neutral instead of park, if you can, and if you have an automatic.
if no change, then you most likely have a bad:
1. battery(if no lights, dome lights, etc whatsoever)
2. bad starter motor/solenoid(since most are all on unit)
3. bad ignition switch

check in the above order. good luck.

Mar 27, 2015 | Cars & Trucks

1 Answer

2000 suburban was stolen replaced ignition cylinder it turns over but no start


Do you have a security light lit or flashing on the Instrument cluster ?
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent is provided in order to prevent the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the lock cylinder. The cylinder rotation produces an analog voltage code in the passlock?"¢ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previousely learned voltage code. If the codes match, a class 2 message is sent from the BCM to the powertrain control module (PCM)/vehicle control module (VCM). The message enables the fuel injectors.
The design of the passlock?"¢ system is to prevent vehicle theft by disabling the engine unless the ignition lock cylinder rotates properly by engaging the correct ignition key. The system is similar in concept to the passkey system. However, the passlock?"¢ system eliminates the need for a key mounted resistor pellet. The components of the passlock?"¢ system are as follows:
?€¢
The ignition lock cylinder


?€¢
The ignition switch


?€¢
The passlock?"¢ sensor


?€¢
The Body control module (BCM)


?€¢
The security telltale


?€¢
The vehicle/powertrain control module (VCM/PCM)


The ignition lock cylinder is located at the upper right side of the steering column. The Passlock?"¢ sensor is in the steering column. The Passlock?"¢ sensor is separate from the key and lock cylinder. The key and the lock cylinder work together in order to determine if the proper ignition key was used to start the vehicle.
In the event of an open Class 2 serial data line between the BCM and the VCM/PCM, the vehicle will become fail-enabled if the VCM/PCM has already received the password from the BCM for that ignition cycle (the engine is running). In this event, the following conditions occur:
?€¢
The security telltale will be ON continuously.


?€¢
The VCM/PCM will become fail-enabled for future ignition cycles.

If a failure in the Class 2 serial data line occurs before the ignition cycle, when the VCM/PCM is not fail-enabled, the following conditions occur:
?€¢
The VCM/PCM will never receive a valid password in order to enable the fuel injectors.


?€¢
The vehicle will not start.


The lock cylinder and the visible key insert portion of the ignition switch are located at the upper right side of the steering column. The electrical switching portion of the assembly is separate from the key and lock cylinder. The electrical switch portion is hidden inside the steering column. The electrical switch portion and the key and lock cylinder synchronize and work in conjunction through the action of the mechanical assembly between the 2 parts.
Passlock?"¢ Sensor
The passlock?"¢ sensor is inside the upper right side of the steering column. The passlock?"¢ sensor contains 2 hall effect sensors. The tamper hall effect sensor is on the top. The security hall effect sensor is under the tamper hall effect sensor. Both of the hall effect sensors monitor the magnet of the lock cylinder through an opening. The tamper hall effect sensor is physically placed on top of the security hall effect sensor. This arrangement enables the tamper hall effect sensor to engage first if an intruder attempts to bypass the passlock?"¢ sensor by placing a large magnet around that area of the steering column. There is a tamper resistor inside the passlock?"¢ sensor in order to help prevent tamper to the system. Passlock?"¢ equipped vehicles have a selection of 10 different security resistors ranging from 0.5K ohms up to 13.6K ohms. Installing one of the security resistors inside the passlock?"¢ sensor will generate a unique passlock?"¢ code. All 10 combinations of the passlock?"¢ sensor have the same part number. However, you cannot simply replace the passlock?"¢ sensor and expect the system to operate properly. Always start by performing the Diagnostic System Check first and following the instructions.
SECURITY Telltale
The SECURITY telltale appears on the message center inside the instrument cluster. If the SECURITY telltale flashes or if the SECURITY telltale lights continuously during the vehicle operation, refer to the system diagnosis.
Fuel Lockout Cycle
The Passlock?"¢ system has a lockout cycle of approximately 10 minutes. Once the vehicle is in the lockout cycle, the vehicle remains in the lockout cycle for 10 minutes, even if the ignition switch is turned from the RUN position to the OFF position.
The Passlock?"¢ system uses the lockout cycle in order to synchronize all of the Passlock?"¢ components when any Passlock?"¢ related part is changed. The Passlock?"¢ system requires 3 consecutive lockout cycles in order to complete the 30 minute learn procedure for a changed component.

Mar 10, 2015 | Cars & Trucks

1 Answer

Tachymeter problem


You probably have either a bad tach or a bad wire connection. The wiring of the tach is very simple - there are really only three leads to deal with:

1. 12v positive from ignition - may be a red wire, goes to switched side of ignition switch to provide 12v when the key is on.
2. Ground - goes to ground - usually black wire
3. Tach sense - goes to the ignition - usually grey wire
4. Light - there is probably another pole for an internal light - this would go to the nav/dash light circuit to pick up 12v when the lights are on. It would have no effect on the operation of the tach.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Dec 14, 2011 | Volvo 760 Cars & Trucks

2 Answers

I can't get my car to start, when i turn the key the car don't make any sounds, i check the battery, change the starter


The next thing i would check is the ignition switch itself. Turn the key to the on position, If the red warning lights on your dash don't light up (and your battery connections are clean), the ignition switch is bad. If they do light up, turn the key to the start position. The dash warning lights should turn off at this key position (most cars). If you're not sure, turn on the headlights. When you try to start the car, the lights should either dim (a lot) or turn off completely. If they do, your ignition switch should be ok. If not, the switch will need replacement.

Sep 02, 2010 | 1995 Ford Windstar

2 Answers

Engine starts for 3 seconds and then shuts down, radio,locks,trunk release,interior lights do not work, clock/radio display shows time but nothing from radio


Hi,
This could be a tricky one - so just go through the options methodically untill you effect a repair.

If it has an immobiliser fitted - try using another key. Sometims the chip in the key fails.

If you did anything prior to this problem - jetwashing, using a mobile phone near the steering column, serious work etc - try these areas first.

Check alternator function.
Check fuses.
Check fuel level.
Look for leaks.
Check belts condition.

It is behaving like a major electrical fault. Check the BIG fuses in the engine bay fusebox. After this - check that the ignition switch is supplying a switched live feed when in the "on" position.
It could be a faulty switch contact. Possible if you have uprated lights somewhere.

Sep 30, 2009 | 2001 Chevrolet Malibu

1 Answer

Chevy S-10 Start problems


If hall effect switch was bad you wouldn't get any spark.What year 2.5L is this?Is this a 2 injector Throttle Body? The pink wire on top of injectors comes thru a 20Amp fuse controlled by the Ignition switch you should have battery voltage with key on The dark green and dark blue wires come from the pcm which are called injector drivers the drivers supply a pulsating ground if you crank the engine with a test light between either pink/dk green or pink/dk blue test light should flash dimmlythat would mean injectors are being driven but there isn't any fuel at the injector or the injectors are bad no pulse means either a bad computer ( which these drivers are known for going bad)or the computer isn't being commanded to fire the injectors.

Aug 22, 2009 | 1988 Chevrolet S-10

2 Answers

Camaro 1994


There are numeous manufacturers and retailers of mats and fitted plastic covers to conceal cracked dashboards -
Take a look:
http://www.google.com/search?rlz=1C1GGLS_en-USUS291&aq=f&sourceid=chrome&ie=UTF-8&q=dashboard+covers

Sep 07, 2008 | 1994 Chevrolet Camaro

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