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 BCM detects voltage 1 second after ignition 0 is inactive on CKT 1454. |
Action Taken When the DTC Sets
| • | The BCM stores the DTC B2948 in the BCM memory. |
| • | The vehicle will start immediately and then stall. |
| • | 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 ON) with no current codes active during the 100 ignition cycles. |
| • | Use a scan tool. |
Diagnostic Aids
Inspect for a bad connection at the Passlock® sensor and the BCM.
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 System diagnostic system check performed? | -- | Go to Step 2 | |
Is the measured voltage greater than the specified value? | 0 V | Go to Step 3 | Go to Step 4 | |
3 | Repair the short to voltage 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 14 | -- |
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 14 | -- |
6 | Inspect for a poor connection at the Passlock® sensor terminal C. Was a poor connection found? | -- | Go to Step 9 | Go to Step 7 |
7 | Use the J 39200 in order to measure the resistance of CKT 1459 from the Passlock® cylinder to the BCM. Is the resistance greater than the specified value? | 2 ohms | Go to Step 8 | Go to Step 9 |
8 | Repair the open circuit in CKT 1459. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 10 | |
9 | Repair the poor connection at the Passlock® sensor terminal C. Refer to Wiring Repairs in Wiring Systems Is the repair complete? | -- | Go to Step 14 | -- |
10 |
Does the Passlock Power data parameter display the specified value? | ACTIVE | Go to Step 11 | Go to Step 13 |
11 | Use the Scan Tool BCM special functions test in order to command the Passlock Power to OFF. Does the Passlock Power data parameter change from ACTIVE to INACTIVE? | -- | Go to Step 12 | Go to Step 13 |
12 |
Is the repair complete? | -- | Go to Step 14 | -- |
13 | Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems. Is the repair complete? | -- | Go to Step 14 | -- |
14 | Clear the DTCs from memory. Are the DTCs cleared from memory? | -- | -- | |
