Torque Converter Clutch Relay Control

Torque Converter Clutch (TCC) relay controls TCC solenoid valve operation using signals from various engine sensors. TCC relay will only turn on when the following conditions are met:

• Engine running
• Engine coolant near operating temperature (varies between models).
• Throttle valve open (degree of opening varies between models).
• Brake not applied (brake switch off).
• Vehicle speed more than specified mph (varies between models).
• 4WD LOW switch off (Grand Vitara, Vitara & XL-7).