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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1558 (Engine Controls And Fuel - 3.5L (L66) - Troubleshooting & Diagnosis) >> Malfunction Indicator Lamp (MIL) Always On >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

If the MIL is ON at all times, and there are no powertrain DTCs set, there is a condition with the CAN or the class 2 circuits.

Malfunction Indicator Lamp (MIL) Always On

Step Action Yes No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Powertrain Control Module Connector End Views or Engine Controls Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? Go to DATA LINK REFERENCES Go to Diagnostic System Check - Vehicle