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Pinpoint Test A: Testing

CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

A1 CHECK VOLTAGE TO THE ABS MODULE
- Key in OFF position.
- Disconnect: ABS Module C135.
- Key in ON position.
- Measure the voltage between ABS module C135-16, circuit 601 (LB/PK), harness side and ground.
  
  Fig 1: Checking Voltage To ABS Module
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
Yes : GO to A2.

No : VERIFY that central junction box fuse 1 (5A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
A2 CHECK CIRCUIT 530 (LG/YE) FOR AN OPEN
- Measure the resistance between ABS module C135-8, circuit 530 (LG/YE), harness side and ground; and between ABS module C135-24, circuit 530 (LG/YE), harness side and ground.
  
  Fig 2: Checking Circuit 530 (LG/YE) For An Open
  Courtesy of FORD MOTOR CO.
- Are the resistances less than 5 ohms?
Yes : REFER to MODULE COMMUNICATIONS NETWORK to continue diagnosis of the ABS module communication.

No : REPAIR the circuit. TEST the system for normal operation.