FJ Cruiser 4WD V6-4.0L (1GR-FE) (2007)
Malfunction Indicator Lamp: Testing and Inspection
MIL Circuit
DESCRIPTION
The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunction detections by the ECM. By turning the ignition switch ON, power is
supplied to the MIL circuit, and the ECM provides the circuit ground which illuminates the MIL.
The MIL operation can be checked visually: When the ignition switch is first turned ON, the MIL should be illuminated and should then turn OFF.If the
MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using an intelligent tester.
Wiring Diagram
INSPECTION PROCEDURE
Step 1