Circuit Description
The body control module (BCM) monitors CKT 262 for the content theft system. The BCM supplies an output to the left front and the right front mini-wedge door jamb switches. When the BCM senses the output voltage low by turning the key in the door key switch, the BCM disables the content theft system.
Conditions for Setting the DTC
| • | CKT 262 is shorted to ground for more than 184 seconds. |
| • | The system voltage must be between 9.0-16.0 volts. |
| • | The above conditions must be met for 0.5 seconds. |
Action Taken When the DTC Sets
| • | If the short to ground occurs after the vehicle is secured, the content theft system will be disabled. |
| • | If the short to ground occurs before the vehicle is secured, the content system will not disable the system by turning the key in the door key switch. |
Conditions for Clearing the MIL/DTC
| • | The current DTC will clear immediately after the short to ground is corrected. |
| • | A history DTC will clear after 100 consecutive ignition cycles without a fault present. |
| • | History and current DTCs may be cleared using a scan tool. |
Diagnostic Aids
| • | Always diagnose the first DTC listed on the scan tool. |
| • | The scan tool must display DTC B2973 as a current code before performing diagnostics. |
| • | Perform a visual inspection for loose or poor connections at all related components. |
| • | Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems. |
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
-
This determines if the BCM is defective. Disconnecting the BCM connector will set other DTCs.
-
The step determines if the left front mini-wedge (door jamb switch) is shorted to ground.
-
This step determines if the right front mini-wedge (door jamb switch) is shorted to ground or if CKT 262 is shorted to ground.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the BCM Diagnostic System Check? | -- | Go to Step 2 | |
Does the scan tool display DTC 2973 as current? | -- | Go to Step 8 | Go to Step 3 | |
Does the test lamp light? | -- | Go to Step 4 | Go to Step 6 | |
4 | With the test lamp still connected, disconnect the right front mini-wedge (door jamb switch). Does the test lamp light? | -- | Go to Step 7 | Go to Step 5 |
5 | Replace the right front mini-wedge. Is the repair complete? | -- | Go to Step 9 | -- |
6 | Replace the left front mini-wedge. Is the repair complete? | -- | Go to Step 9 | -- |
Locate and repair CKT 262 (LT GRN) short to ground between the BCM connector C3 (PPL) and the left front/right front mini-wedge (door jamb switches). Is the repair complete? | -- | Go to Step 9 | -- | |
8 |
Is the repair complete? | -- | Go to Step 9 | -- |
9 | Clear the DTCs. Is the repair complete? | -- | -- |
