Circuit Description
This circuit supplies the Passlock™ data to the body control module (BCM) from the Passlock™ sensor, CKT 1836.
Conditions for Setting the DTC
All of the following conditions must be met:
| • | The Passlock™ option is enabled. |
| • | Ignition 0 is active. |
| • | The Passlock™ code does not equal the learned key code during the engine start or for 1 second at any time during an ignition cycle. |
Action Taken When the DTC Sets
| • | The BCM enters the tamper mode. |
| • | The BCM stores DTC B2960 in the BCM memory. |
| • | If this DTC is set during ignition ON, the vehicle will not start. |
| • | If this DTC is set while the engine is ON, the theft indicator illuminates and the vehicle will restart on the next attempt. |
Conditions for Clearing the DTC
| • | The BCM goes to sleep and reinitializes with the fault cleared. |
| • | All of the BCM history codes will be cleared after 100 ignition cycles (from OFF to RUN) with no current codes active during the 100 ignition cycles. |
| • | A Scan Tool is used. |
Diagnostic Aids
| • | When the diagnostics direct you to take the electrical measurements at the wiring harness junction blocks, refer to Power Distribution Schematics for terminal assignments of the wiring harness junction blocks. |
| • | If the DTC is a history DTC, the problem may be intermittent. Perform the tests shown while wiggling the wiring and connectors. This action often causes the malfunction to appear. |
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
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Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open. | ||||||||
1 | Was the Theft Deterrent Diagnostic System Check performed? | -- | Go to Step 2 | |||||
2 | Inspect for a poor connection at the BCM connector C3. Was a poor connection found? | -- | Go to Step 3 | Go to Step 4 | ||||
3 | Repair the poor connection at the BCM connector C3. Refer to Wiring Repairs in Wiring Systems Is the repair complete? | -- | Go to Step 8 | -- | ||||
4 | Inspect for a poor connection at the Passlock® sensor connector. Was a poor connection found? | -- | Go to Step 5 | Go to Step 6 | ||||
5 | Repair the poor connection at the Passlock® sensor connector terminal A. Refer to Wiring Repairs in Wiring Systems Is the repair complete? | -- | Go to Step 8 | -- | ||||
6 |
Is the repair complete? | -- | Go to Step 8 | Go to Step 7 | ||||
7 | Replace the BCM. Refer to the following procedures:
Is the repair complete? | -- | Go to Step 8 | -- | ||||
8 | Clear the DTCs from the memory. Are the DTCs cleared from the memory? | -- | -- | |||||
