C0090

The apply valve solenoid circuits are supplied with battery power when ignition is in RUN position. The electronic brake and traction control module (EBTCM) controls valve function by grounding circuit to turn valve on when necessary.

CODE PARAMETERS
DTC C0090 will set if:
The EBTCM senses an open, short to ground, or short to voltage in the circuit.
When this trouble code sets the EBTCM will disable ABS, and turn ON the antilock telltale.
Dynamic rear proportioning (DRP) will only be functional on one wheel unless a LR apply solenoid or LR wheel speed code is also set, then DRP will be disabled. In either case, the RED brake telltale will be turned on.

DIAGNOSTIC AIDS
- The inlet valve solenoids are internal to the EBTCM. Replacing the controller is the only repair.