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Old 03-04-2012, 07:36 AM   #1
MikeIndiana
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Default My Saturn 2000 won't start. Security Light, Gas gauge not working.

My car won't start. A few seconds after I turn the key to run, the security light comes on, the 'service engine soon' light comes on and the little service + wrench light comes on too.

It turns over, but isn't getting any fuel. No fuel pressure. Has over a 1/2 tank of gas in it. Gas gauge shows empty.

Leaving it in run position, for 10 minutes, does not reset the security light and will not start after any amount of time.

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Old 03-04-2012, 10:35 AM   #2
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2003 L-Series 3.0L Sedan
Default Re: My Saturn 2000 won't start. Security Light, Gas gauge not working.

Factory security does not disable the fuel pump. Did you check for a blown fuel pump fuse? Swapped pump relay with another?

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Old 03-04-2012, 11:09 AM   #3
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Default Re: My Saturn 2000 won't start. Security Light, Gas gauge not working.

Which model car do you have?, L-series or S-series.

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Old 03-04-2012, 09:30 PM   #4
MikeIndiana
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Default Re: My Saturn 2000 won't start. Security Light, Gas gauge not working.

I have an S series.

And the security operates by disabling the fuel pump. Thanks.

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Old 03-04-2012, 09:38 PM   #5
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Default Re: My Saturn 2000 won't start. Security Light, Gas gauge not working.

The security reset involves turning the car to the run position 3 times, while waiting at least 10 mins (AND the security light goes OUT) each time, before the car will start again.

Did you recently replace anything or lock the car with the FOB but unlock it with the keys?

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Old 03-05-2012, 04:33 AM   #6
MikeIndiana
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Default Re: My Saturn 2000 won't start. Security Light, Gas gauge not working.

Quote:
Originally Posted by ShawnV View Post
The security reset involves turning the car to the run position 3 times, while waiting at least 10 mins (AND the security light goes OUT) each time, before the car will start again.

Did you recently replace anything or lock the car with the FOB but unlock it with the keys?
No, the waiting 10 minutes thing does not work.

I tested the schrader fuel valve and there is no fuel pressure, I don't hear the fuel pump when I turn the ignition to run.

The daytime running lights come on, when the security lights come on, a second or two after turning the ignition it to 'run'.

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Old 03-05-2012, 12:26 AM   #7
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Default Re: My Saturn 2000 won't start. Security Light, Gas gauge not working.

Quote:
Originally Posted by MikeIndiana View Post
I have an S series.

And the security operates by disabling the fuel pump. Thanks.
Well, you're mistaken.

From the service manual;

The passlock sensor data supplied to the BCM is in the form of V-codes or voltage codes. When the proper ignition key is turned in the ignition switch, the correct V-code is supplied to the BCM. The BCM responds by sending a serial data password to the engine controller allowing the engine to run.

Under a tamper condition, a specific V-code is supplied to the BCM. The BCM will send a class II message to the PCM disabling the fuel injectors.


No mention anywhere of disabling the fuel pump. I thought the same until I read the service manual.................

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Old 03-05-2012, 05:06 AM   #8
MikeIndiana
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Default Re: My Saturn 2000 won't start. Security Light, Gas gauge not working.

Quote:
Originally Posted by fdryer View Post
Well, you're mistaken.

From the service manual;

The passlock sensor data supplied to the BCM is in the form of V-codes or voltage codes. When the proper ignition key is turned in the ignition switch, the correct V-code is supplied to the BCM. The BCM responds by sending a serial data password to the engine controller allowing the engine to run.

Under a tamper condition, a specific V-code is supplied to the BCM. The BCM will send a class II message to the PCM disabling the fuel injectors.


No mention anywhere of disabling the fuel pump. I thought the same until I read the service manual.................
well I bought a digital service manual, from DetroitMotors.com and here is what it says.

Quote:
OPERATION
When mechanical key turns the Passlock(tm) lock cylinder, data is created by a rotating magnet turning past a
stationary Hall effect sensor. This data signal is sent to the BCM. The BCM determines the validity of the data
within a preset time window, then sends a coded password to the PCM, which then allows the fuel injectors to
operate normally.
If data is not read within the preset time window, the Vehicle Theft Deterrent (VTD) system will go into
SHORT TAMPER MODE. During this SHORT TAMPER MODE, the vehicle will not operate for 4 seconds
and SECURITY indicator light will flash. After 3 consecutive failed time window readings, or if wrong data is
read, the VTD will go into LONG TAMPER MODE. During the LONG TAMPER MODE, the fuel injectors
will shut off for 10 minutes and SECURITY indicator light will flash. Vehicle may crank and temporarily start
during tamper modes, but will soon stall due to fuel shut-off.
It says it disables the fuel injectors, but I guess there should still be pressure at the schrader valve, not sure.

It may disable the fuel injectors by disabling the fuel pump, more than one source has said it disables the fuel pump.

From what I gather how this system operates is some sort of secret they keep from the general public. Maybe so the government can remotely disable your car completely. Who really knows, it's possible. They admittedly do it now on newer cars, maybe they've been doing this secretly for a long time.

I can hardly believe this is all just to deter stupid car thieves.

I guess it could be the BCM also, if it's not just a loose wire somewhere.

I checked under the car and there is very little corrosion, the wires all seem in good condition.

I checked some of the wires and got no voltage in the rear fuel pump connector, which according to the Richpin videos, means there's a problem somewhere, but the 'problem' I guess could be in one of the damn computers.

Really miss non-computerized cars right now.

I guess if it's the BCM i gotta buy the part from a dealer and they need to use some special "Tech I" software only some computer expert can use, to program it, so I can start my car.

Is fuel injection really worth THIS?

Last edited by MikeIndiana; 03-05-2012 at 05:20 AM..

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