Diagnostic Instructions
DTC Descriptor
DTC C0899 : Device Voltage Low
Circuit/System Description
The electronic brake control module (EBCM) monitors the ignition voltage level available for system operation. A low voltage condition prevents the system from operating properly.
Conditions for Running the DTC
Ignition is ON.
Conditions for Setting the DTC
This fault will be set if the ignition voltage to EBCM is less than 9 volts for 100 msec.
Action Taken When the DTC Sets
| • | The EBCM disables the traction control system (TCS) and vehicle stability enhancement system (VSES) for the duration of the ignition cycle. |
| • | The antilock brake system (ABS) indicator turns on. |
| • | The vehicle dynamics caution (VDC) indicator turns on. |
| • | The driver information center (DIC) displays the SERVICE STABILITRAK message. |
Conditions for Clearing the MIL/DTC
| • | The condition for the DTC is no longer present and the DTC is cleared with a scan tool. |
| • | The ABS indicator may remain illuminated after repairs are made and DTCs are cleared, until the vehicle is operated at speeds greater than 13 km/h (8 mph) and the self test is completed. |
| • | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Circuit/System Testing
- Measure the voltage at the battery terminals.
- With scan tool read the ignition voltage in the EBCM data list. Verify that battery terminal voltage and ignition voltage readings do not differ more than 1 volt.
| ⇒ | If more than 1 volt test the ground circuit of the EBCM for high resistance or replace the EBCM. |
- Go to
Charging System Test .
