Circuit Description
The BCM monitors the load control circuit for shorts to ground and shorts to voltage.
The circuit starts at the BCM and travels to the IP fuse panel where the circuit splits to supply power for the heated seat switch and HVAC control head for the rear defog relay driver.
Conditions for Running the DTC
| • | The Voltage to the BCM must be between 9.0 and 16.0 volts. |
| • | The ignition must be in the ON position. |
| • | The Load Shed system must be active. |
| • | This DTC shall not set during BCM programing and configuration changes. |
| • | This DTC shall not set if any communication codes are set. |
Conditions for Setting the DTC
The voltage of the load control circuit, at the module, shall be greater than 8 volts for 1/2 second while the output is inactive.
Action Taken When the DTC Sets
The BCM sets a DTC and disables the following State of Health (SOH) DTCs:
| • | DTC U1096 |
| • | DTC U1255 |
| • | DTC U1300 |
| • | DTC U1301 |
The BCM illuminates the SVS indicator.
Conditions for Clearing the MIL/DTC
| • | The Load Shed system in not in an active state. |
| • | The voltage of the load control circuit at the module shall be less than 8 volts for 1/2 second while the output is inactive. |
| • | A history DTC clears after 100 malfunction free ignition cycles. |
| • | The BCM receives the clear code command from the scan tool. |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Body Control System Schematics in Body Control System | |||
1 | Did you perform the Engine Electrical Diagnostic System Check? | Go to Step 2 | |
2 |
Does the scan tool indicate that DTC B2348 is current? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Test the load control circuit of the BCM for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 4 |
4 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 5 |
5 |
Important: Perform the set up procedure for the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System. Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 6 | -- |
6 |
Does the DTC reset? | Go to Step 2 | System OK |
