xA L4-1.5L (1NZ-FE) (2006)
3. When the refrigerant amount and congestion of A/C cycle cannot be checked by the condition of the sight glass and manifold gauge,
connect the positive battery cable to terminal 1 of the connector and the negative battery cable to the terminal 2 of the connector. Then
check if cold air comes out while setting the blower switch to the "LO" position.