Solara V6-3.3L (3MZ-FE) (2004)
Malfunction Indicator Lamp: Testing and Inspection
MIL CIRCUIT
CIRCUIT DESCRIPTION
The MIL is used to indicate the ECM's detection of a vehicle malfunction.
The instrument panel GAUGE fuse provides circuit power and the ECM provides the circuit ground that illuminates the MIL.
MIL operations should be checked visually:
The MIL should be illuminated when the ignition switch is first turned ON. If the MIL is always ON or OFF, use the hand-held tester or OBD II scan
tool and follow the procedures below to determine the cause of the problem.
Wiring Diagram
INSPECTION PROCEDURE