I have a 2000 pontiac firebird the security light keeps flashing and my car want start unless you cross it over then it will start and run for a couple of seconds then it quits anybody have any ideal
You have two choices ! 1 is take to auto repair shop an have it fixed the correct way . 2 do an anti-theft system by pass , which may not be the problem . These systems do have a problem with the wires breaking at the lock cylinder . When you stick the key into the ignition lock there are two contacts inside that touch the resistor pellet .The resistance of the pellet is read by the BCM ,if correct the vehicle starts , if not the BCM sends a disable signal to the PCM - engine computer to disable the fuel injectors . That's what is happening on your vehicle , starts for a couple of seconds an dies. Fuel injectors are being shut off .
The personal automotive security system (PASS-Key?®) system is designed to prevent the engine from starting if the proper resistance is not sensed from the ignition key. Of the 15 different key codes or resistance values available, only one will work with each body control module (BCM). Once the key code is programmed into the BCM, the resistance value is stored in a non-volatile memory.
The PASS-Key?® system prevents the engine from starting by controlling the starter relay and the powertrain control module (PCM) fuel enable input. If the PCM does not sense the proper frequency signal on the fuel enable input, fuel will not be provided to the engine.
If the wrong resistance value is sensed when the ignition switch is in the RUN position, the BCM will not ground the starter enable circuit and will not output the fuel enable signal for approximately three minutes. The engine is prevented from starting and discourages a thief from trying key codes or resistance values at random.
If the correct resistance value is sensed when the ignition switch is in the RUN position, the BCM will ground the starter enable circuit and output the fuel enable signal. The engine will start normally.
If the PASS-Key?® system detects an open or short to ground when the ignition switch is in the RUN position, the BCM will default to fail enable. Fail enable occurs when the proper key resistance is sensed before the open short to ground occurs. This has to occur for 1 minute before the fail enable is engaged. Fail enable will illuminate the security indicator lamp and allow the operator to stop and start the vehicle until the problem is corrected.
You can test to see what the resistance is with an ohm meter across the pellet on the key . An then find the wires coming out of lock cylinder an see if you read same resistance ,with key in the ignition cylinder . If you do the wires are ok , if not then you can do the by pass . Go to radio shack an buy a resistor of same value an solder it in between the wires of the harness side , not ignition side . But ,if the wires are good an you can read the resistance value ,then you have other problem an need to have Trouble codes checked .
Mar 24, 2016 |
Pontiac Cars & Trucks