Pinpoint Test H : Load Shed Message Displays In Message Center: Notes

Refer to Charging System for schematic and connector information.

Normal Operation and Fault Conditions 

When the engine is off  and the key is in ON  or accessory mode  , and the BCM determines the battery state of charge is below 40%, or 45 minutes  have elapsed, a load shed message is sent over the CAN. This message turns off the audio/navigation system to save the remaining battery charge. Under this condition, a load shed message will be displayed to notify the driver that battery protection actions are active:

• System Off to Save Battery Turn Ignition Off displays on the FCDIM (without touchscreen controls)
• SYSTEM OFF TO SAVE BATTERY PLEASE TURN IGNITION OFF OR START ENGINE displays on the FDIM (with touchscreen controls)
• Battery Saver - System Off displays on the FDIM (with Sync)

These messages displaying may be normal operation  and not indicate a fault. Refer to the Owner Literature and REFER to: Charging System - System Operation and Component Description  . Load shed messages displaying with the engine running  or only on the FCDIM or the FDIM (with touchscreen controls) indicates the audio system has detected a fault.

Possible Sources 

• Normal operation
• Audio system
• Battery
• BCM
• Fuses or Fusible Links
• Generator
• Wiring, terminals or connectors

Visual Inspection and Diagnostic Pre-checks 

• Inspect the high current BJB for loose or corroded connections.
• Inspect the battery for loose or corroded connections.
• Inspect the generator for loose or corroded connections.
• Inspect the BJB for loose or corroded connections.
• Inspect the high current BJB for loose or corroded connections.
• Inspect C134 for loose or corroded connections.
• Inspect battery and engine grounds for loose or corroded connections.