FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Switch Monitor Test

The Switch Monitor Test checks input signals sent from the Electronic Control Module (ECM).

The Switch Monitor Test is a unique and separate test from the Key On Engine Running (KOER) self test. This test is performed by actuating a series of switches and verifying their operation and input signals.

All switches must be "Off" at the beginning of the test and only one switch at a time must be actuated during the test.