Mechanics

SECURITY LIGHT STAYS ON

2003 Chrysler Town and Country

Electrical problem
2003 Chrysler Town and Country 6 cyl Front Wheel Drive Automatic 139000 miles

ENGINE DOES NOT TURN OVER. WHEN SENTRY IS ACTIVATED IT BLINKS FOR 15 MIN. AS SPECIFIED IN MANUAL BUT OUNCE YOU TRY THE KEY START THE SECURITY LIGHT STAYS ON AND CAR WILL NOT START.
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Lewwms
October 1, 2010.




Hi lewwms,

Thank you for the donation.

Here is a description of the operations and from the symptom description, an error has been detected in the system and appropriate scan tools would be required to perform diagnostics.

OPERATION
The Mechanical Instrument Cluster (MIC) performs a four second bulb check via PCI communication with the Sentry Key Immobilizer Module (SKIM). After the bulb check, the lamp is controlled according to SKIM messages. Then, the SKIM sends messages to the BCM to operate the light based upon the results of the SKIS self tests. The light may be actuated in two possible ways, flashing or on solid. If the light comes on and stays on solid after a power-up test, this indicates that the SKIM has detected a system malfunction. If the SKIM detects an invalid key when the ignition switch is moved to the ON position, it sends a message on the PCI bus to the BCM, to flash the light. The SKIM can also send a message to flash the light and generate a single audible chime at the same time. These two events occurring simultaneously indicate that the SKIS has been placed into the " Customer Learn" mode. Refer to STANDARD PROCEDURE - TRANSPONDER PROGRAMMING for more information on the " Customer Learn" mode. If the light comes on and stays on after the power-up test, diagnosis of the SKIS should be performed using a DRBIII(R) scan tool and the appropriate Body Diagnostic Procedures. The light
is not a serviceable component.

KHLow2008
Oct 1, 2010.
What is the (skis )and where is it located I was told once that if the security light stayed on the vehicle would not start.

When I ohms test on the starter relay pins in the fuse box it was no grounded at pin 85. Should it be? After wiggling the ground bat. Cable the security light blinks as suppose(15)and goes off, but ounce the key is turn to the start position the light come on and stays. And when engaging the sec. System again from door locks or command mod. The door locks horn sound but the sec. Comes on and stay. But ounce remove the bat ground cable and wiggle it it works as spec as describe above that is until I turn the key to the start position

Tiny
Lewwms
Oct 1, 2010.
" The light may be actuated in two possible ways, flashing or on solid.

If the light comes on and stays on solid after a power-up test, this indicates that the SKIM has detected a system malfunction. &Quot; From the above description, there is a system malfunction therefore you would not be able to start the vehicle. The starter circuit would be disabled.

If wiggling the battery cable causes the security light to start blinking, the connections are bad and repeated occurrence could have caused the system to be locked. Remove the battery cable, clean and retighten it and retest.

The SKIM is at the steering column. I do not have any diagrams to show you the exact location.

KHLow2008
Oct 2, 2010.
When we say system malfunction being detected by the skim, dose this mean that there is another component or sensor involve. In your earlier reply you mention a skis is this the same as the SKIM or a separate component?

Thank you for your patience
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Tiny
Lewwms
Oct 2, 2010.
SKIS is the system name.

SENTRY KEY IMMOBILIZER SYSTEM
The Sentry Key Immobilizer System (SKIS) is available as a factory-installed option on this vehicle. It is designed to provide passive protection against unauthorized vehicle use by disabling the engine, after two (2) seconds of running, whenever an invalid key is used to start the vehicle. The SKIS is active whenever the ignition is on and does not require any customer intervention. The primary components of the system are the Sentry Key Immobilizer Module (SKIM), Sentry Key (ignition key with a transponder molded into the head), indicator light, Body Control Module (BCM), and the Powertrain Control Module (PCM). The SKIM is mounted to the steering column with the molded, integral antenna mounted on the ignition housing. The indicator light, is located in the Mechanical Instrument Cluster (MIC).

KHLow2008
Oct 2, 2010.

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