Circuit Description
The instrument panel cluster (IPC) supplies a 5 volt signal and a ground circuit for the PASS-Key® system. This allows the IPC to detect PASS-Key® resistance values. Inserting the PASS-Key® ,with resistor pellet, in the ignition lock cylinder completes the PASS-Key® circuit. Contacts in the ignition lock cylinder mate with the pellet contacts. The IPC compares the resistance value of the key pellet to the valid resistance programmed into the IPC. If the proper resistance value is read, the IPC allows the engine to start. If the resistance value is incorrect, a malfunction is present and a DTC will set.
Conditions for Setting the DTC
A malfunction occurs in the communication between the IPC and PCM.
Action Taken When the DTC Sets
The IPC displays the THEFT SYSTEM PROBLEM, CAR MAY NOT RESTART message on the driver message center.
Conditions for Clearing the DTC
| • | This DTC requires an ignition cycle in order to change from current to history. |
| • | The IPC detects a valid PASS-Key® resistance value on the PASS-Key® signal circuit. |
| • | A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present. |
| • | Use a scan tool. |
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform A Diagnostic System Check-Theft Deterrent? | Go to Step 2 | |
2 |
Is DTC B2750 set as a current DTC? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
3 | DTC B2750 must also set along with DTC B2710 or B2711. Is DTC B2710 or B2711 also set as a current DTC? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
