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Continuity Tests

  1. Disconnect negative battery cable. Remove motor relay from hydraulic unit. Ensure continuity exists between terminals "B" and "C" of motor relay. See Fig 1 . Connect 12 volts to terminal "C", and ground terminal "B". Ensure continuity exists between terminals "A" and "D".
  2. Replace relay if continuity is not as specified. If continuity is as specified, check wiring harness between motor relay and ABS control unit fuse (60 amps).
Fig 1: Identifying Motor & Valve Relay Terminals
G100511Courtesy of MAZDA MOTORS CORP.