C1604

DTC C1604 EBCM Internal Fault






Circuit Description
This DTC identifies a possible malfunction within the EBCM.

Conditions for Setting the DTC
DTC C1604 will set when a possible internal component/microprocessor problem may exist.

Action Taken When the DTC Sets
^ The solenoid relay opens, removing power from the pump motor and the solenoids.

The ABS and DDRP Are Disabled
^ DTC C1604 is stored.
^ ABS Warning Lamp and Brake Warning Lamp are turned on.

Conditions for Clearing the DTC
^ If the conditions that set DTC C1604 are no longer present, the DTC may be cleared by using the proper scan tool.
^ The DTC that has not occurred in 100 drive cycles will be cleared from history data.

Diagnostic Aids
^ When C1604 is displayed on the scan tool, it should be followed by two additional numbers (xx) which should be documented along with any other DTC(s) that may be displayed.
^ Repair low voltage, driveability, or other electrical complaints first, prior to performing C1604 trouble tree.
^ Make sure the integrity of the connection between the EBCM and the BPMV is secure, tight and free of corrosion, leaks and/or damage.





DTC Troubleshooting