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Jeep Wrangler YJ
YJ General Discussion
YJ won't start (wiring issue?)
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<blockquote data-quote="Walt Jaquith" data-source="post: 426487" data-attributes="member: 18654"><p>Grab the <a href="https://wrangleryjforum.com/threads/jeep-wrangler-yj-wiring-diagrams.27004/" target="_blank">Wiring Diagrams.</a> There's a lot of stuff that can cause a no-start. First place I'd look would be the automatic shut down relay. It and the fuel pump relay are in the power distribution center under the hood, and operate together. Fuse 1 (30A) in the power distro serves load current to that entire circuit. The relay is activated by power from the ignition switch through Fuse 5 (10A) under the dash. It hots up the Dark Green/Orange wire which feeds the coil and the injectors.</p><p></p><p>All of these circuits are grounded through the ECM (left firewall behind the washer fluid), so just jumping the Dark Green/Orange wire to V+ won't necessairly bypass the problem, but if that circuit doesn't energize when you turn the key on, that's the first thing to fix.</p></blockquote><p></p>
[QUOTE="Walt Jaquith, post: 426487, member: 18654"] Grab the [URL='https://wrangleryjforum.com/threads/jeep-wrangler-yj-wiring-diagrams.27004/']Wiring Diagrams.[/URL] There's a lot of stuff that can cause a no-start. First place I'd look would be the automatic shut down relay. It and the fuel pump relay are in the power distribution center under the hood, and operate together. Fuse 1 (30A) in the power distro serves load current to that entire circuit. The relay is activated by power from the ignition switch through Fuse 5 (10A) under the dash. It hots up the Dark Green/Orange wire which feeds the coil and the injectors. All of these circuits are grounded through the ECM (left firewall behind the washer fluid), so just jumping the Dark Green/Orange wire to V+ won't necessairly bypass the problem, but if that circuit doesn't energize when you turn the key on, that's the first thing to fix. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
YJ won't start (wiring issue?)
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