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Home >> Hummer >> 2009 >> H3 Base, Standard >> Repair and Diagnosis (Single Page) >> Body & Frame >> Ignition Switch/Steering Lock >> Wiring Systems And Power Management - Service, Repair, Troubleshooting & Diagnosis >> Power Mode Mismatch >> Circuit/System Verification

Circuit/System Verification

With a scan tool, access BCM, Power Mode data display list and compare all parameters listed with the corresponding ignition key position. The PMM Power Mode Parameters table below illustrates the correct state of these input parameters in correspondence to the ignition switch position. The circuits which the individual parameters are related to are in parentheses.

PMM Power Mode Parameters

Ignition Switch Position Ignition Accessory (Terminal 1) Ignition 1 Run/Crank (Terminal 3) Ignition Off/Run/Crank (Terminal 4)
OFF Inactive Inactive Active
ACC Active Inactive Inactive
ON Active Active Active
START Inactive Active Active