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:
| • | CKT 1836 is open or shorted to B+. |
| • | Ignition 0 is active. |
Action Taken When the DTC Sets
| • | The security indicator illuminates. |
| • | The BCM stores the DTC B2958 in the BCM memory. |
| • | The vehicle will start, then stall. |
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
| • | If the DTC is a history DTC, the problem may be intermittent. Perform the test shown while wiggling the wiring and connectors. This will cause the malfunction to appear. |
| • | If the malfunction occurred while driving the vehicle will start on subsequent key cycles. |
| • | Inspect for a poor connection at the Passlock® sensor and 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 1836 between the Passlock® connector terminal A and the BCM connector C2 terminal B6. Refer to Wiring Repairs in Wiring Systems Is the repair complete? | -- | Go to Step 13 | -- |
4 | Use the J 39200 in order to measure the resistance in CKT 1836 between the BCM connector C2 terminal B6 and the Passlock® connector terminal A. Is the measured resistance within the specified range? | 0-2 ohms | Go to Step 6 | Go to Step 5 |
5 | Repair the open or repair the high resistance in CKT 1836 between the BCM connector C2 terminal B6 and the Passlock® connector terminal A. Is the repair complete? | -- | Go to Step 13 | -- |
6 | Inspect for a poor connection at the BCM connector C2 terminal B6. Was a poor connection found? | -- | Go to Step 7 | Go to Step 8 |
7 | Repair the poor connection at the BCM connector C2 terminal B6. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 13 | -- |
8 | Inspect for a poor connection at the Passlock® sensor connector terminal A. Was a poor connection found? | -- | Go to Step 10 | Go to Step 11 |
9 |
Is the voltage greater than the specified value? | 6 V | Go to Step 11 | Go to Step 12 |
10 | 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 13 | -- |
11 |
Is the repair complete? | -- | Go to Step 13 | -- |
12 | Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems. Is the repair complete? | -- | Go to Step 13 | -- |
13 | Clear the DTCs from the memory. Are the DTCs cleared from the memory? | -- | -- | |
