Circuit Description
During periods of high electrical current drain, the SBM may intermittently block selected components from receiving power, including the heated seats. The body control module (SBM) pulls CKT 182, terminal A5 to ground in order to control the seat heater control module. The seat heater control module disables the heated seats. The SBM monitors CKT 181, heated seat status, terminal B8 in order to know whether the heated seats are ON or OFF. The SBM monitors CKT 182 for shorts to ground.
Conditions for Setting the DTC
The SBM detects a short to ground in CKT 182.
Action Taken When the DTC Sets
| • | Stores a DTC B2348 in the SBM memory |
| • | No driver warning message will be displayed for this DTC |
Conditions for Clearing the DTC
| • | A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present. |
| • | Using the on-board (clear DTCs) feature |
| • | Using a scan tool |
Diagnostic Aids
Refer to Heated Seats for additional information.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Body Control Module Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Is the DTC still present? | -- | Go to Step 3 | |
3 | Test CKT 182 for an open or a short to ground. Is the SBM replacement complete? | -- | Go to Step 5 | Go to Step 4 |
4 | Replace the heated seat module. Refer to Heated Seat Module Replacement. Did you complete the repair? | -- | Go to Step 6 | -- |
5 | Repair the open or the short to ground in CKT 182. Did you complete the repair? | -- | Go to Step 6 | -- |
6 |
Did you complete the repair? | -- | -- |
