Circuit Description
This circuit supplies power from the body control module (BCM) to the Passlock™ sensor, CKT 1459.
Conditions for Setting the DTC
All of the following conditions must be met:
| • | Ignition 0 is not active. |
| • | The Passlock™ power CKT 1459 is shorted to voltage for approximately 8 seconds. |
Action Taken When the DTC Sets
| • | The BCM stores the DTC B2948 in the BCM memory. |
| • | The vehicle will start. |
| • | The SECURITY indicator remains illuminated. |
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.
Test Description
The numbers below refer to the numbers on the diagnostic table.
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
|
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 | |||||
Is the measured voltage within the specified range? | B+ | Go to Step 3 | Go to Step 4 | |||||
3 | Repair the short to B+ in CKT 1459 between the BCM connector C3 terminal B4 and the Passlock® sensor connector terminal C. Refer to Wiring Repairs in Wiring Systems Is the repair complete? | -- | Go to Step 10 | -- | ||||
4 | Inspect for a poor connection at the BCM connector C3 terminal B4. Was a poor connection found? | -- | Go to Step 5 | Go to Step 6 | ||||
5 | Repair the poor connection at the BCM connector C3 terminal B4. Refer to Wiring Repairs in Wiring Systems Is the repair complete? | -- | Go to Step 10 | -- | ||||
6 | Inspect for a poor connection at the Passlock® sensor terminal C. Was a poor connection found? | -- | Go to Step 7 | Go to Step 8 | ||||
7 | Repair the poor connection at the Passlock® sensor terminal C. Refer to Wiring Repairs in Wiring Systems Is the repair complete? | -- | Go to Step 10 | -- | ||||
8 |
Is the repair complete? | -- | Go to Step 10 | Go to Step 9 | ||||
9 | Replace the BCM. Refer to the following procedures:
Is the repair complete? | -- | Go to Step 10 | -- | ||||
10 | Clear the DTCs from memory. Are the DTCs cleared from memory? | -- | -- | |||||
