Pinpoint Test C: DTC(S) C1311, C1313, C1315, C1317 And C1440 - Brake Hydraulic Pressure Transducer Signal Faults

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

C1 INSPECT THE BRAKE SYSTEM
- Check the brake system for hydraulic leaks.
- Are there any leaks in the base brake system?
1. YES : REPAIR the base brake system. CLEAR the DTCs. REPEAT the self-test.
2. NO : Go to C2.
C2 CHECK FOR ABS MODULE OPERATION
- Disconnect the ABS module.
- Check for:
  - corrosion.
  - pushed out pins.
  - spread terminals.
- Connect the ABS module connector and make sure it seats correctly.
- Clear the DTCs. Repeat the self-test.
- Is the DTC still present?
1. YES : INSTALL a new HCU. REFER to VEHICLE DYNAMIC SYSTEMS article. REPEAT the self-test.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.