Main Relay

The main relay is located in the BJB. The operation of the main relay is controlled by the ECM which provides a ground path for the main relay coil, energizing the relay and closing the relay contacts.

The main relay supplies battery voltage to the following engine sensors and actuators:

• Electric throttle - TP sensor (via ECM)
• Fuel injectors
• Ignition coils
• Coil Capacitor
• Variable inlet cam profile switching solenoid - front and rear
• Intake tract variable manifold motor
• Plenum variable intake manifold motor
• HO2S
• Purge valve
• Fuel tank leakage monitoring pump (NAS only).