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Torque Converter Clutch (TCC) Relay

  1. Turn ignition off. Remove TCC relay. Using an ohmmeter, measure resistance between relay terminals No. 1 and 3. See Fig 1 . Resistance should be 90-110 ohms. Continuity should not be present between terminals No. 2 and 4.
  2. Apply battery voltage to terminal No. 1, and ground terminal No. 3. Continuity should now be present between terminals No. 2 and 4. Replace relay if it does not test as specified.
Fig 1: Identifying TCC Relay Terminals
G97D06843Courtesy of SUZUKI OF AMERICA CORP.