Circuit Description
The BCM monitors the heated seat control module status signal circuit for shorts to voltage.
The circuit starts at the BCM and travels to the I/P fuse panel where the circuit splits and travels to the heated seat module - driver and heated seat module - front passenger.
Conditions for Running the DTC
| • | 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. |
| • | This DTC shall not set if codes B1982 or B1983 are set. |
Conditions for Setting the DTC
The voltage of the heated seat control module status signal circuit, at the module, shall be greater than 5 volts for 1/2 second while the output is inactive.
Action Taken When the DTC Sets
The BCM sets a DTC and disables the heated seats until the next ignition cycle.
Conditions for Clearing the DTC
| • | The Load Shed system in not in an active state. |
| • | The ignition has been cycled from Off to Run. |
| • | A history DTC clears after 100 malfunction free ignition cycles. |
| • | The BCM receives the clear code command from the scan tool. |
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Heated Seats Schematics in Seats Connector End View Reference: Master Electrical Component List in wiring Systems | ||||
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 |
Is the voltage measured greater than the specified value? | 5.0 V | Go to Step 4 | Go to Step 6 |
4 |
Is the voltage measured greater than the specified value? | -- | Go to Step 5 | Go to Step 7 |
5 | Test the heated seat control module status signal 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 12 | Go to Step 8 |
6 | Inspect for poor connections at the harness connector of the heated seat module - driver. 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 12 | Go to Step 9 |
7 | Inspect for poor connections at the harness connector of the heated seat module - front passenger. 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 12 | Go to Step 10 |
8 | 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 12 | Go to Step 11 |
9 | Replace the heated seat module - driver. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | -- | Go to Step 12 | -- |
10 | Replace the heated seat module - front passenger. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | -- | Go to Step 12 | -- |
11 |
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 12 | -- |
12 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
