For 1990-2009 cars

### Schematic

Refer to

#### Pass Key III Module

Theft Deterrent System Components
Vehicle Theft Deterrent (VTD) Description
Cell 133: G200, G302
DLC Schematic
Stop Lamp, Hazard, and Pass Key Fuses, FRT HVAC MI BLWR and Headlamp Circuit Breakers
IGN, SIR, T/S/G, Cruise, and PCM/Pass Key 1 Cluster Fuses
IGN, SIR, T/S/G, Cruise, and PCM/Pass Key 1 Cluster Fuses
Cell 14: G200
.

### Circuit Description

The vehicle theft deterrent (VTD) module checks memory to see if the Learn Coded Key setting is on. If so, the VTD sets this DTC.

### Running the DTC

The VTD must see the ignition switch input. The VTD can not have a B1327 set as a current DTC.

### Conditions for Setting the DTC

If the Learn Coded Key setting is on, the VTD sets this DTC.

### Action Taken When the DTC Sets

The VTD will learn the key code. No driver warning message will be displayed for this DTC.

### Conditions for Clearing the MIL/DTC

The VTD clears the current status of the DTC when it does not see the Learn Coded Key setting as on. The DTC will still be retrieved as current until the ignition switch is cycled. The DTC will become a history DTC at that time.

### Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. To set this code, a key with a working transponder was read by the VTD (Pass Key® III) Module. For that key to operate the vehicle perform a 10-minute or 30-minute re-learn procedure.

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you perform A Diagnostic System Check - Vehicle Theft Deterrent? | Go to Step 2 | Go to Diagnostic System Check - Theft Deterrent
2 | Important: If you perform a 10-minute or 30-minute re-learn procedure, all keys not learned at that time will be erased and will not be recognized. Perform the Quick Learn Procedure on all keys or instruct the customer how to perform the Quick Learn Procedure.

Perform the VTD (Pass Key® III) Module learn Procedure. Refer to Programming Theft Deterrent System Components .

Is the procedure complete?

Go to Step 3

--

3 |

1. Use a scan tool in order to clear the DTCs.
2. Attempt to start the vehicle.

Does the DTC reset?

Go to Step 2

System OK