Pinpoint Test F: DTC C1185: Testing

NOTE: Repair all other DTCs before proceeding.

F1 CHECK THE ANTI-LOCK BRAKE SYSTEM (ABS) MODULE FOR DTCs
- Enter the following diagnostic mode on the scan 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 ABS module C135-9, circuit 532 (OG/YE), harness side and ground; and between ABS module C135-25, circuit 532 (OG/YE), harness side and ground.
  
  Fig 1: Checking Circuit 532 (OG/YE) For Power
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
Yes : GO to F3.

No : VERIFY battery junction box (BJB) fuse 11 (10A) is OK. If OK, 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 . CLEAR the DTCs. REPEAT the self-test.

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.