Circuit Description
When an ignition key is inserted in the ignition switch, the terminals located in the steering column lock cylinder contact the resistor pellet in the key. The IPC measures the resistance of the key pellet and then determines if the measured value matches the value stored in the IPCs memory.
Conditions for Setting the DTC
| • | The IPC determines that one of the 15 valid key pellets was detected, and matches the resistance of the one stored in the IPCs memory. |
| • | The IPC class 2 vehicle security password report message was sent and acknowledged. |
| • | The IPC then determines that one of the 15 valid key pellets was detected, but now the key pellet does not match the resistance of the one stored in the IPCs memory. |
Action Taken When the DTC Sets
The IPC displays the THEFT SYSTEM PROBLEM, CAR MAY NOT RESTART message on the driver message center.
Step | Action | Value(s) | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Theft Deterrent System Check? | -- | Go to Step 2 | |||||||
2 |
Is the value displayed within the specified value? | 1-15 | Go to Step 4 | Go to Step 3 | ||||||
3 | Perform the Replacing Lost PASS-Key® II Ignition Keys procedure in Theft Deterrent Systems. Did the engine start? | -- | -- | |||||||
4 |
Is DTC B2781 set current? | -- | Go to Step 7 | Go to Step 5 | ||||||
5 | Is the ignition key damage apparent or suspect? | -- | Go to Step 6 | |||||||
6 | Replace the ignition key. Refer to Replacing the Ignition Key in General Information. Did you complete the repair? | -- | -- | |||||||
7 |
Is DTC B2781 set current? | -- | Go to Step 8 | |||||||
8 |
Did you complete the repair? | -- | -- |
