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Home >> Mazda >> 1995 >> MX-3 Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnostic Trouble Code (DTC) Testing >> DTC 51: Fail-Safe Relay Or Wiring Harness

DTC 51: Fail-Safe Relay Or Wiring Harness

  1. Check fuses for fail-safe relay. See WIRING DIAGRAMS  . Replace fuses as necessary. If fuses are okay, go to next step.
  2. Check fail-safe relay. See FAIL-SAFE RELAY TEST  under COMPONENT TESTING. Replace relay as necessary. If fail-safe relay is okay, check wiring harness for open or short to ground between fail-safe relay and ABS control module. Repair as necessary. If wiring harness is okay, go to next step.
  3. Clear DTCs. See CLEARING CODES  under DIAGNOSIS & TESTING. Recheck for DTCs. If DTC 51 is displayed, replace ABS control module. If DTC 51 is not displayed, a temporary poor contact in wiring may have occurred and ABS is now functioning properly.
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