Resistance Measurement Test

The SDM performs this test when the IGNITION 1 voltage, the 23-volt loop reserve, and the deployment loop voltage are within the correct ranges. This test checks for correct resistance of the deployment loops, and for correct operation of the driver current source and of the passenger current source. If an open is detected, this test stops before resistances are calculated. However, if the open clears, the test will be completed, and resistances will be checked.