Test NS-10A - "Auto Shutdown Relay Control Circuit"

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS at end of article.

Turn ignition on. Disconnect Auto Shutdown (ASD) relay. Place DRB-II in voltmeter mode. Probe Dark Blue wire (White/Yellow wire on Wrangler) in ASD relay connector. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open Dark Blue wire (White/Yellow wire on Wrangler) wire from ignition switch. Perform VERIFICATION TEST VER-1 .
Using a DVOM, check resistance between Dark Blue wire (White/Yellow on Wrangler) at ASD relay. If resistance is 100 ohms or more, replace ASD relay. Perform VERIFICATION TEST VER-1 . If resistance is less than 100 ohms, go to next step.
Turn ignition off. Disconnect engine controller 60-pin connector. Using a DVOM, check resistance of Dark Blue/Yellow wire (Orange/Dark Green wire on Wrangler) between engine controller connector terminal No. 51 and ASD relay connector.
If resistance is less than 10 ohms, replace engine controller. Perform VERIFICATION TEST VER-1 . If resistance is 10 ohms or more, repair open Dark Blue/Yellow wire (Orange/Dark Green wire on Wrangler). Perform VERIFICATION TEST VER-1 .