Circuit Description
When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder embedded in the head of the key is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique value, which is received by the theft deterrent control module. The theft deterrent control module then compares this value to a value stored in memory, learned key code. If the value is correct the theft deterrent control module sends a random generated number to the transponder, this is called a challenge. Both the transponder and the theft deterrent control module perform a calculation on the challenge, if the calculations match the theft deterrent control module sends the fuel enable password via the class 2 serial data circuit to the engine control module (ECM). If either the transponders unique value or the calculation to the challenge is incorrect the theft deterrent control module will send the fuel disable password to the ECM via the class 2 serial data circuit.
Conditions for Running the DTC
The ignition switch is in the ON position and the battery voltage is greater than 9.0 volts.
Conditions for Setting the DTC
If the transponder value from the ignition key does not match the one stored in memory, the theft deterrent control module sets this DTC. This DTC indicates the use of a key with a transponder value that has not been learned by the theft deterrent control module. The vehicle theft deterrent (VTD) system considers this to be a theft attempt.
Action Taken When the DTC Sets
| • | The vehicle will not start. |
| • | The theft deterrent control module sends a message via the serial data circuit to the radio to display STARTING DISABLED REMOVE KEY. |
| • | The theft deterrent control module sends a message via the serial data circuit to the instrument panel cluster (IPC) to flash the SECURITY indicator. |
Conditions for Clearing the MIL/DTC
| • | The theft deterrent control module clears the current status of the DTC when it senses a valid, memorized, transponder value from the ignition key. |
| • | The DTC can be cleared by using a scan tool. |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
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Verifies the condition for setting DTC B3060 is current.
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The only method to determine which re-learn procedure to perform.
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To set this DTC, a key with a working transponder that is not learned was read by the theft deterrent control module. For that key to operate the vehicle and one or more learned keys are available, perform the Adding Keys procedure.
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To set this DTC, a key with a working transponder that is not learned was read by the theft deterrent control module. For that key to operate the vehicle, a 10 Minute Re-Learn Procedure or 30 Minute Re-Learn Procedure must be performed.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Theft Deterrent System Schematics Connector End View Reference: Theft Deterrent System Connector End Views | |||
1 | Did you perform the Theft Deterrent Diagnostic System Check? | Go to Step 2 | |
Is DTC B3060 set as a current code? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | |
3 | Are more than one of the vehicle's keys available? | Go to Step 4 | Go to Step 6 |
Attempt to start the vehicle using all of the vehicle's available master keys. Do any of the available master keys start the vehicle? | Go to Step 5 | Go to Step 6 | |
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Important: Two learned master keys are required to perform the Adding Keys procedure on export vehicles with option code (UA2 OR Z49). If only one learned master key is avalable then the Replacing Keys procedure will need to be performed. Refer to Replacing Keys . With a learned master key perform the Adding Keys procedure on the suspect key. Refer to Adding Keys . Is the procedure complete? | Go to Step 7 | -- | |
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Important: If a 10 Minute or 30 Minute Re-Learn Procedure is performed, all keys not learned at that time will be erased and will not be recognized. Perform the Adding Keys procedure on all keys or instruct the customer how to perform the Adding Keys procedure. Refer to Adding Keys . Perform the Programming Theft Deterrent System Components procedure. Refer to Programming Theft Deterrent System Components . Is the procedure complete? | Go to Step 7 | -- | |
7 |
Does the DTC reset? | Go to Step 2 | System OK |
