Circuit Description
The BCM monitors the battery positive voltage and battery negative circuit voltage to determine if it is between 9.0-15.0 volts and sends this information out as a class 2 message to the VTD.
Conditions for Running the DTC
This DTC shall run only if the BCM has power, ground and the ignition in not in START mode.
Conditions for Setting the DTC
This DTC shall be set as current when the voltage falls below 9.0 volts for 1.2 milliseconds.
Action Taken When the DTC Sets
A message shall be sent out on the class 2 lines to illuminate the charge indicator and security lamp.
Conditions for Clearing the MIL/DTC
In order to clear the DTC from a current status the voltage shall be greater than 9.54 volts for 1200 milliseconds.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
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Tests for the proper operation of the complete circuit.
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Tests for the proper operation of the signal input circuit.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Theft Deterrent System Schematics in Theft Deterrent Connector End View Reference: Body Control System Connector End Views in Body Control Systems | ||||
1 | Did you perform the Engine Electrical Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does the scan tool indicate the battery voltage is greater than the specified value? | 9.0 volts | Go to Step 3 | Go to Charging System Test |
Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | -- | Go to Step 4 | -- | |
Does the DTC reset? | -- | Go to Step 2 | System OK | |
