Pinpoint Test F: DTC C1185: Testing

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Repair all other DTCs before proceeding.

F1 CHECK THE ANTI-LOCK BRAKE SYSTEM (ABS) MODULE FOR DTCS
- Key in OFF position.
- Connect the diagnostic tool.
- Retrieve and record the ABS module DTCs.
- Is DTC C1185 retrieved?
- Yes : GO to F2.
- No : CLEAR the DTCs. DRIVE the vehicle over a rough road. REPEAT the self-test. TEST the system for normal operation.
F2 CHECK CIRCUIT 532 (OG/YE) FOR POWER
- Measure the voltage between the ABS module C135 pin 9, circuit 532 (OG/YE), harness side and ground; and between the ABS module C135 pin 25, circuit 532 (OG/YE), harness side and ground.
  
  Fig 1: Measuring Voltage Between ABS Module C135 pin 9, Circuit 532 (OG/YE) & Ground & Between ABS Module C135 Pin 25 & Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes : GO to F3.
- No : REPAIR the circuit. REPEAT the self-test. TEST the system for normal operation.
F3 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect all ABS connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all ABS connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.