1011-00

1011-00 BCM SYSTEM OVERVOLTAGE





When Monitored and Set Condition

- When Monitored: Ignition on. The Body Control Module (BCM) monitors the Fused B(+) circuit at all times for proper system voltage.
- Set Condition: If the voltage is above 16 volts, the Diagnostic Trouble Code (DTC) is set.





For a complete Body Control Module Circuit Diagram. Body - Electrical Diagnostics.

Diagnostic Test

1. WITH THE scan tool, READ DTCs
Turn the ignition on.
With the scan tool, read and record the Body Control Module DTCs.
With the scan tool, erase the Body Control Module DTCs.
Start the engine.
With the scan tool, read DTCs.
Does the scan tool display a System Overvoltage DTC?

Yes

- Go To 2

No

- Go To 4

2. MEASURE THE BATTERY VOLTAGE




Turn the ignition off.
Disconnect the BCM harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Start the engine.
Raise the engine speed above 1800 RPM.
Measure the battery voltage.
Is the voltage above 16 volts?

Yes

- Refer to charging system testing and repair.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Go To 3

3. MEASURE THE RESISTANCE OF THE GROUND CIRCUIT




Turn the ignition off.
Measure the resistance between ground and the Ground circuits at the BCM C4 harness connector.
Is the resistance below 1.0 ohm at each Ground circuit?

Yes

- Replace the Body Control Module.Body Control Module - Removal.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Repair the Ground circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test

4. INTERMITTENT WIRING AND CONNECTORS
The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.

NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTC's.

NOTE: Check for any Technical Service Bulletins that may apply.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and open circuits.
Were there any problems found?

Yes

- Repair as necessary.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.