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Pinpoint Test F: DTC C1185: Testing

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.