DTC 03

Solenoid Schematic:

Diagnostic Trouble Code (DTC) 3, Open Dump Solenoid Or Electronic Brake Control Module (EBCM) Malfunction:

CIRCUIT DESCRIPTION
A Diagnostic Trouble Code (DTC) 3 relates to an open in the Antilock Pressure Valve (APV) dump valve circuit. The Electronic Brake Control Module (EBCM) uses the dump valve to reduce fluid pressure in the brake lines when it senses the wheel is locking up. The fluid pressure is routed to an accumulator. An open dump solenoid prevents the EBCM from reducing the pressure and the wheel will continue to lock up.

TEST DESCRIPTION
- Check for continuity through the dump solenoid winding.
- Check for a consistent DTC being set after clearing the memory.
- Check for corrosion or poor contact in the solenoid electrical terminals.
- Check the resistance of the solenoid after the terminal repair to see if it corrected the open condition.

DIAGNOSTIC AIDS

CAUTION: Do not pierce the electrical connectors, wires, seals, or insulation during testing. Doing so will break the seal and lead to corrosion and failure of the wiring and terminals.