A special electronic ABS diagnostic tester is necessary to properly diagnostic the system. You can perform a few preliminary checks before taking the vehicle to a service department who is equipped with a tester.
1. Check the brake fluid level in the master cyclinder.
2. Verify that the control module electrical connector is securley connected.
3. Check the electrical connectors at the hydraulic control unit.
4. Check fuses.
5. Follow the wiring harness to eack wheel and check that all connections are secure and that the wiring is not damaged.
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Thursday, October 25th, 2007 AT 1:43 PM