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Jeep Wrangler YJ
YJ General Discussion
Washer Fluid Problem (unique)
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<blockquote data-quote="deadpool1" data-source="post: 439526" data-attributes="member: 21229"><p>now learn ,the skill of measuring <strong>voltage drop</strong>s (rust is top contender) grounds bad, connector pins, and bad switches. 3 cause with non-intermittent option wipers. no really rust is #1. and 100x that in the salt belt (wiki it)</p><p><strong>steps:</strong></p><p>DMM set to volts</p><p>long jumper wire (+clips) from black - test lead to battery negative lug, clean lug too. not rusty either, (only this works every time, and will not lie to you) learn it. now.</p><p></p><p>now the red wire test lead is ready to find illegal voltage drops, under normal loads.</p><p></p><p></p><p>the grounds above are 0v, 0.5vdc is auto industry spec, max drop on grounds.</p><p>8vdc was measured above but the node not told.(clearly) I guess pump pulled, and done all wrong.</p><p></p><p>but was not done correctly at all, he said not connected so that was only useless leakage current in a DMM with 1 to 10 million ohms of input impedance.</p><p>a useless test, sorry was.</p><p>in school we demo this to kids,l using their body as a wire and see voltage pass from finger to fingers to the DMM and using a tiny 9vdc battery.</p><p>you the human are just like a wire is to the DMM in volts mode, need proof ,gee google it.</p><p>all wires in all cars have natural leakage, that does not matter at all, so do not measure that.</p><p>only measure under load. (what ever it is , is turned on)</p><p>what matters are open circuits failing, 0v to load</p><p>and short circuits to load or at the device , in question. causes fuses to blow. or CB to trip</p><p>and voltage drops , both on grounds or power feeds of any kind.</p><p></p><p>what matters here is connected, and under load and wash button pushed, all at the same time using needle probes all techs know how to use.</p><p></p><p></p><p>the pump gets 11 to 12vdc key on,. KEYON-ENGINE OFF or KOEO state, no need here to eat exhaust fumes, gee I use battery charger doing all this.</p><p></p><p>if not the path to this node is failing for voltage drop way too much, as in, 12v good 8v bad under load, see that?</p><p></p><p>SAME goes for the pump ground 0.5vdc max,we all that 0v to be simple. 1 to 12vdc here is bad ground. easy as falling off a log using a meter to find bad voltage drops.</p><p>the hard fix above is that old and rare wiper module for intermittent option.</p><p>we covered all this me in 1965 high school, in 3 classes, physics and electronics, and auto shop. electives all.</p><p></p><p>learn to use the DMM correctly and guessing ends.</p><p>ask for help how. this wiring is super simple.</p><p>hint, no digital controls in the steering column here,</p></blockquote><p></p>
[QUOTE="deadpool1, post: 439526, member: 21229"] now learn ,the skill of measuring [B]voltage drop[/B]s (rust is top contender) grounds bad, connector pins, and bad switches. 3 cause with non-intermittent option wipers. no really rust is #1. and 100x that in the salt belt (wiki it) [B]steps:[/B] DMM set to volts long jumper wire (+clips) from black - test lead to battery negative lug, clean lug too. not rusty either, (only this works every time, and will not lie to you) learn it. now. now the red wire test lead is ready to find illegal voltage drops, under normal loads. the grounds above are 0v, 0.5vdc is auto industry spec, max drop on grounds. 8vdc was measured above but the node not told.(clearly) I guess pump pulled, and done all wrong. but was not done correctly at all, he said not connected so that was only useless leakage current in a DMM with 1 to 10 million ohms of input impedance. a useless test, sorry was. in school we demo this to kids,l using their body as a wire and see voltage pass from finger to fingers to the DMM and using a tiny 9vdc battery. you the human are just like a wire is to the DMM in volts mode, need proof ,gee google it. all wires in all cars have natural leakage, that does not matter at all, so do not measure that. only measure under load. (what ever it is , is turned on) what matters are open circuits failing, 0v to load and short circuits to load or at the device , in question. causes fuses to blow. or CB to trip and voltage drops , both on grounds or power feeds of any kind. what matters here is connected, and under load and wash button pushed, all at the same time using needle probes all techs know how to use. the pump gets 11 to 12vdc key on,. KEYON-ENGINE OFF or KOEO state, no need here to eat exhaust fumes, gee I use battery charger doing all this. if not the path to this node is failing for voltage drop way too much, as in, 12v good 8v bad under load, see that? SAME goes for the pump ground 0.5vdc max,we all that 0v to be simple. 1 to 12vdc here is bad ground. easy as falling off a log using a meter to find bad voltage drops. the hard fix above is that old and rare wiper module for intermittent option. we covered all this me in 1965 high school, in 3 classes, physics and electronics, and auto shop. electives all. learn to use the DMM correctly and guessing ends. ask for help how. this wiring is super simple. hint, no digital controls in the steering column here, [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Washer Fluid Problem (unique)
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