Ignition Switch

Ignition Switch:

With the ignition switch in the Drive or Start position, battery positive voltage (+15) goes from the ignition switch to pin 60 of the ECM.

Battery positive voltage (+30) is applied to pins 1 and 48 of the ECM.

When the ignition is switched off, certain functions in the ECM remain live for an additional 12 minutes. One example is that repetition of the Before start function is prevented within a period of 12 minutes.