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ABS-2 (Open Isolation Solenoid Circuit)

  1. Turn ignition off. Disconnect negative battery cable. Disconnect control unit harness connector.
  2. Using an ohmmeter, check resistance between control unit harness connector terminal "C" and chassis ground. See Fig 1 . If resistance is 3-6 ohms, replace control unit. If resistance is greater than 6 ohms, go to next step.
  3. Disconnect solenoid valve harness connector from solenoid valve connector. Check resistance between isolation solenoid terminal and ground terminal of solenoid valve. See Fig 2 or Fig 3 .
  4. If resistance is 3-6 ohms, repair open in isolation solenoid wire between solenoid valve and ABS control unit. Check for dirty or loose terminals. If resistance is greater than 6 ohms, replace hydraulic unit.
Fig 1: Control Unit Harness Connector Terminal ID
G91B03891Courtesy of MAZDA MOTORS CORP.
Fig 2: Solenoid Valve Connector Terminal ID (B2200, B2600i & MPV)
G91D03892Courtesy of MAZDA MOTORS CORP.
Fig 3: Solenoid Valve Connector Terminal ID (Navajo)
G92H01055Courtesy of MAZDA MOTORS CORP.
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