Torque Converter Clutch (TCC) Relay
- 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.
- 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.