Jeep Grand Cherokee, 1998, Automatic Shutdown Device

Location of Relay BoxThe PCM provides ground to the starter relay control coil AFTER it determines the anti-theft system has passed the authentication test. Test the auto shutdown relay. Remove the ASD relay from the power distribution center in the engine compartment. Check for battery power on two terminals in the relay socket with the key in the start position.1993, 1994, 1995 4.0L Jeep Grand Cherokee. ASD relay troubleshooting notes: The auto shut down (ASD) relay gets power from fuse #6 (15 Amp) and fuse #2 (20 Amp) of the Power Distribution Center (PDC). The PCM activates the ASD relay and the fuel pump relay at the exact same time and thru' the same circuit (PNK wire).Jeep Asd Relay Magic Or Not Automatic Shut Down Relay Wk Grand Cherokee Wiring Diagram Automotive Wiring Schematic Asd Relay Location Where Is The Asd Relay Located Keeping This Older Jeep Running 2000 Jeep Wrangler Jeep Liberty Kj Manual Part 608 Kill Switch To Asd Relay Ground Gauge And Amps JeepJeep. Compass. Electrical. Main Power Relay. Location. ASD relay location. DONNAMCAVOY3 MEMBER; 2010 JEEP COMPASS; 2.4L; 4 CYL; 4WD; AUTOMATIC; 51,000 MILES; Where is the ASD relay located? Do you. have the same problem? Yes. No. Thursday, August 6th, 2015 AT 1:50 PM. 2 Replies. KEN ADMIN; Hey DONNA They call it the "Main Relay" now. It is in

Jeep no start — Ricks Free Auto Repair Advice Ricks Free

Hello, 2012 Jeep Compass, no crank, checked ASD (main) relay and relay box, no corrosion, relay turns on for 2 seconds then shuts off, no codes other than PO113 high temp intake air which I thought was because I disconnected to take out the air tube for more room, frustrated StanNoticed that when I turn the key, the ASD relay buzzes/clicks very fast for the 1-2 seconds that the fuel pump is supposed to prime. Testing (not sure what is relevant here) 12V from 86 to 85 during the 1-2 second prime; 12V from 30 to 87 (when I jump these pins the Jeep starts with no problem)asd make noise so does the fuel the ele. fan in front and one on the drivers side and the in side fan only will work on the top vent it use to change but not no more the jeep cranks it get gas but no fire and the battery goes dead all the time like to much volts is being drawing out of the batteryThe power supplied to the fuel pump, ignition coil, fuel injectors, and parts of the power module is controlled by the logic module through the Automatic Shutdown Relay (ASD); the idea is to shut off fuel pressure and the ignition systems when the key is turned off to prevent fires, dieseling, and other problems.

1993-1995 Auto Shut Down (ASD) Wiring Diagram (Jeep 4.0L)

Search from over 10 Million Auto Parts. Save Up To 80% Off Retail Prices, Buy Discount Auto Parts Parts Here!Access our free Auto Shut Down Relay Repair Guide for Liberty, Wrangler, 1997-2005 through AutoZone Rewards. These diagrams include: Access our Liberty, Wrangler, 1997-2005 Auto Shut Down Relay Repair Guide Description and Operation by creating an account or signing into your AutoZone Rewards account.One of these components is the automatic shutdown relay, commonly referred to as the ASD relay. The ASD relay is responsible for supplying switched 12-volt power to the vehicle's injectors and ignition coils, allowing them to provide fuel and produce spark.1991 Jeep YJ 2.5L Ax-5 Fuel Pump Not Priming OR Running Continuously Performed Check of Relays: Fuel Pump (F) Auto-Shutdown (ASD) and New Relay from AutoZone (NEW)AUTOMATIC SHUT DOWN (ASD) RELAY When the ignition switch is in either the START or RUN position, it connects circuit A1 from fuse 8 in the Power Distribution Center (PDC) to circuit A21. Circuit A21 supplies battery voltage to the coil side of the Automatic Shut Down (ASD) relay.

The JEEP ASD "Automatic Shut Down relay".

What is it, why is it there, the right way to does it paintings and why?My engine stalls (shuts down) at anytime, and even cranking, why?All comments are USA, not Export Jeeps.

Real JEEPS! ONLY! (all EFI automobiles have this, but is executed in different techniques) EFI manner Electronically Fuel Injected ( unlike mechanical injection)On maximum vehicles the ASD is simply instrument in the ECU/PCM. On jeeps its each, Software and Hardware, the ASD relay. (to me, they are the entire same)

ASD relay "Automatic Shut Down relay" used on all EFI jeeps. 1990 to present.What is it?It is a security device, that exists by way of LAW and for just right causes. It CAN prevent FUEL fires (the Classic Crash and burn reason why) and engine hyrdolocking.

It does that via slicing gasoline, spark and injection. (by way of hardware and software) (device approach the PCM(ECU) instructions, in ROM "good judgment")

It cuts fuel (and spark) if the PCM thinks, there may be any threat of crash and burn.The PCM drops the ASD relay for lots of causes, this checklist is for all years. (some methods, are missing on early years) Any scan software will display DTC errors for each and every failure cranking or operating (SCAN it LOOK)

Lost 12 volt DC electric power. (the ASD relay is dead without a power to it) dead as a door nail, as they are saying. (so,watch your dash voltmeter, or use a voltmeter on the CIG lighter energy port) ( ASD relay Drops for "CAUSE") Sees the spark vulnerable or lifeless at the ignitor pressure to Ignition coil primary pin. (it sees, and knows spark is bad here) (It can't see the secondary High Voltage facet, just the principle) Crank sensor dangerous. or misfiring. CKP Cam sensor dangerous, or misfiring, CMP. ASD enter learn back pin fails. (PCM commanded it but it surely refused to do its task) Shorted relay coil? Same ASD output learn back. fails. PCM commanded it, however the relay is dangerous. useless output. (dangerous RELAY) Immobilizer active. (failing or dangerous IMMO key, and so on,) SKIM module is unhappy see sprint gentle glowing telling you, SKIM failure. Any security screw ups, at all will glow the fool lamps. The operators information is clear there, learn that. or hit house above and see SKIM On some newer years, the gasoline pump relay output, is monitored and if it fails?, it sets DTC ERRORS, and drops the ASD. USE A SCAN TOOL! See WHY IT FAILED!

My OBD2 scan software, can track, PCM 12volt DC power. (it has a singular PID for that) Pids are reside information from sensors. Parameters IDs.

On even more recent Jeeps with Throttle by cord, it could shut down with a catastrophic throttle by way of cord (TBW) T-body motor error or TPS stuck open on all automobiles, combating "Toyota Run-Aways" when you get my drift. (court cases…)

FACT: In each case the PCM will log errors and display DTC errors, in case you only LOOK! SCAN IT! With a REAL SCAN software (purchase/barrow/rented)If you misplaced spark to all cylinders, now not just 1, use this common sense under:

ASD relay by no means closes? – Is a blown fuse and lost all energy to the PCM.? The ASD should close for two seconds or its dangerous or the PCM isn't remaining it, ( PCM bad) or Bad ASD (coil inside open) ASD relay closes for 2 seconds, simplest. – Is dangerous spark, bad CMP, dangerous CKP, scan it and crank at the identical time ASD relay closes for 2 seconds, however you discover no 12vdc at coil + or injector 12vdc energy is lifeless (during said 2 seconds), or (0v) cranking. – This means the ASD relay is dangerous. (unhealthy contacts, substitute it) ASD relay closes, but I have no spark to any cylinders. – So is unhealthy Ignition coil, or crank /cam sensors or bad ignitor module. SCAN IT. If the ASD relay drops driving and stalls the engine, or even parked idling, one of the vital above brought about it. (older vehicles have, less exams) Stalls led to by means of ASD drop are in the 8 level list above. Stalls led to by means of ASD now not dropping first! Can be 50 reasons, however in macro shape is, dangerous engine bad spark plugs and wires, unhealthy fueling, which can be flooding or misplaced gasoline force (stavation) Stalls for dangerous engine are misplaced compression sizzling. Some engine can do this, even stuck open head valves now or simplest HOT. (and lots of more issues inside the true engine) Stalls for spark are commonplace, by no means tuning the automobile up every 60,000 miles (spark portions. and many others) For fueling issues are bad gasoline, too much gasoline (black spark tips) or hunger, finding this is simple, try to keep engine runing with hand sprayed check gasoline. Can you save the stall with A speedy right foot action? Yes, then its now not the ASD, inflicting stalls. Its fueling or other issues. (even a caught closed ISC idle valve can stall any engine,sizzling,because of loss of air to idle engine!)

DO NOT work on my own, get any person to begin engine and you look at the ASD!

The gadget and the way it works.The ASD has engine startup logic that is unique to JEEPs. (in part)You must crank with in seconds or the key on, is disregarded by many jeeps. (the ole' key off, key on take a look at again deal) "the glove field operators information explains this"You crank the engine, and the above listing of common sense tests, will have to not fail, right through the start tournament or it cuts the ASD.

Note in moderation, if spark is bad cranking, the ASD cuts spark coils 100% useless.(double dead) Funny, however very true, see the ASD schematic? The ECU provides however 2 seconds to get up and work, or kills the show.

You handiest get 2 seconds to get the 8 elements above true or the sport is all over.If when riding, it (PCM) sees one of the vital 8 fail, ASD drops.In reality, the ASD can drop, then come back, whilst using, folks say it cuts out. certain it did, on 1993 and more recent JEEPS you'll scan, drive and log information, to peer why! any OBD2 scan software. person who logs is, absolute best of easiest.The USA has all automobiles OBD2 1996 and more moderen and inexpensive scan equipment can be had for , rented or loaned to you. (there is not any reason why, to work blind, ever in the United States, get the scan device, plug it in and USE IT) (if older use the blinking CEL tests observed below…)

The DTCs mistakes, let you know. CMP /CKP or Spark are lifeless. (and distinctive codes for ASD screw ups enter or outputted)OBD2 we take a look at Pending DTC's and LIVE and Stored DTC's.Freeze body, DTC's, will show what DTC failed. (and what the opposite sensors had been doing at that second)or even seeing RPM drop like a rock, faster than any crankshaft can spin down, dig? is another clue.

On pre 1996 Jeeps see easy methods to get flash codes below:The FSM covers that underneath emissions + diagnostics. See DTC checklist and the right way to get it. (hint :crank for 5 seconds, see what fails?)The FSM is here.Jeep wisdom base.

FLASH codes, or OBD scans: DTC scanning strategies from first Jeeps to new. How to get my DTC errors; there are 2 techniques. I take advantage of a real scan software for all 91 to now.Here is my Innova 3120 (9 at walfart too){ does Jeep: 1993-1995 OBD1 after which does OBD2 1996 to Now. but does no longer do OBD2 Live-Data Stream Display )

The ignition key toggle tips works 1991? to now., 1996+ Jeeps, a scan instrument should be connected to the OBD2 port to diagnose any ASD issues, below is a list of codes that will close it down. (OBD2)Key trick is (On/off/On/off/On/ ) see CEL (MIL) flash 2 digit codes now… "no get started? crank for five seconds., unencumber key and see codes? would possibly work too.?"Jeep adjustments codes like gals trade lips stick colours.All decimal codes, FSM uses hex. (base 16)Warning, the CEL would possibly not glow for many mistakes running. even code 54 is not going to glow the CEL. (scan equipment rule right here)At the tip it'll flash two fives, because of this end of codesDTC's: the 2 digit are OBD1, the Pxxxx codes are OBD2. P approach powertrain, engine or transmission codes. (errors)

11 CKP crank sensor useless. 1996/7 (P1391) (P1398) misfire at prohibit! CKP is an EPA requirement for 1996 rules. (misfire,and so forth) 24 TPS stuck prime, cuts gas. (P0123) "throttle place sensor' 42 ASD fails as much as 1998 or can mean the Fuel pump relay output is DEAD. See FSM for main points. 43 Dead spark (primary facet) DTC mistakes (P0351) 54 (1993 my oldest book) means "no cam shaft sync signals", CMP. (1996/7) CMP = Cam position sensor. (or CMP is misfiring) (9D-hex? manufacturing unit DRB? scan device) ( or OBD DTC P1391) CMP/CKP loss. (1998+ code) I'm positive there are other codes, that can drop ASD, however jeep does NOT checklist all of them. Thus my web page. 37 Park / impartial switch PRNDL failure? (I'm guessing here) and past right here. code 14/24/? The jeep books do a poor activity of stating all ASD good judgment. IMO!

The ASD energy feeds can blow the PCM fuses, this is the long play (45min) phase 1 to 3, video for college students on that matter, discovering the PCM lifeless…

Finding out ASD states, for DIY, with nearly no equipment, (no scan tools? ) NO STARTS?The ASD relay most not drop out cranking for five seconds?Gee, how can I uncover that? smartly, quite a lot of manner.Keep in mind, maximum other people can't pay attention the pump spin cranking (or drop out cranking! ), (until Xmen other folks? "or Superman?)

The scan instrument instructed you why! (DTC) however you don't have one.. for 3? dollars even less used!!!. so… here is a cheaters checklist… The ASD relay coil pins went from 12vdc (11v) to 0v, 2 seconds, prior to my 5 2d cranking consultation ended. This is the ECU doing that for "CAUSE". My spark timing light hooked up, went useless, at 2 seconds, similar as consistent with above. consistent with "CAUSE". My voltmeter at 2 gas pump wires went from 11v to 0v in 2 seconds. in keeping with "CAUSE". My injector (any) NOID gentle (attached) is going dead, 2 seconds in to cranking, for "CAUSE". IF now not, then the gas pump is possibly lifeless. Check fuel drive subsequent. to be at spec, now not dribble assessments malarkey. Injectors want complete spec. drive to run. Sorry, dry rails is a sound take a look at, but not the dribble check. What is "CAUSE". Well this is simple, I simply indexed all ECU ASD drop Causes above, all 8. Having no scan device, makes you blind, get one and prevent running BLIND! (beg, barrow, hire or buy one )

The keyon/off magic tricks unfortunately, clears many ASD drop screw ups. Making that trick close to needless. (key off, erases some DTCs)

Dog chases path?:Please don't take your car to the dealer and say, my CEL was once on, earlier than, but is not on, now. oops!The PCM most effective studies live codes (previous codes are cleared robotically, if no longer true) (Live approach NOW)In the true world, things may also be excellent, bad or intermittent. (buy a scan tool and log your disasters in actual time live, after which you could have details that can resolve complicated problems, and wager what?, newer automobiles are more advanced and there's no finish to this,evolution…)ANDThe ECU stores codes, but if they self corrected, they're ERASED, (sorry the broker can NOT see erased codes by the PCM or by your resetting them, with the scan instrument or battery pulls) (there is no Windows undelete command, in vehicles, now not yet…)If you ask them to fix cleared codes, on the broker you'll spend a whole lot of cash and get zero results. (it's an Implied, demand via you; for him to GUESS, so you're asking him to wager, he is not god. nor clairvoyant, he's however just a guy)In most instances, EVERYONE, and me, all guess flawed about equivalent, lacking FACTS or EVIDENCE.So, purchase a $Nine scan instrument and get the DTCs your self,write them down and the mechanic can guess 10 times higher now. even A hundred times is imaginable (eg, intermittent open OXYGEN sensor heater. for sure)One extra abnormal factor, is the ECU/PCM on most cars loves to hide bad spark DTCs, you key off and it erases the bad spark DTC. (this is to give it a brand new probability, subsequent crank up, IMO)

More… (one more case of the hen and egg) see why?

The older Jeeps, say a 1995, has OBD1, and maximum people, don't have a Scan instrument.The key on/off/on/off/on trick erases spark failure codes. (sucks huh?)On 1991 and more moderen Jeeps, the scan tool can, see unhealthy spark DTCs. (check out it)! Cranking for 5 seconds. Look for Spark fail or different codes. (DTCs)

Scan gear for outdated dogs:This device can do real scans on 1993/1995 Jeeps.Older than that, best $one thousand and up scan gear paintings,DRB2, (DRB is the manufacturing facility scan software title,btw)Snap-On MT-2500.The older 87-90′ Renix EFI (ECU) won't even retailer codes, it simplest does live errors.

Buy an previous DRB2, off fleabay. 91 up 95? $$$$$AutoXray 5000, or 6000 usedOTC observe 4000, used.Actron CP 9110

RENIX historical past: (tremendous outdated Dogs) I owned 2.Model years: (find a working scan instrument for these engines, is problematic. )The Renix EFI is AMC gadget. its not a JEEP it's AMC. and is NOT OBD1 at all. (it's pre OBD1 or as they say Proprietary.)

1986 – Renix TBI available on Jeep 2.5 L four-cylinder engines. 1987 – the brand new Renix controlled 4.0 L six-cylinder engine used to be rated at 173 hp (129 kW; 175 PS) and 220 lb·feet (298 N·m) of torque. 1988 – 4.0 L output larger to 177 hp (132 kW; 179 PS) and 224 lb·ft (304 N·m) of torque, because of higher compression ratio. 1989 – Changed to Renix MPFI. 1991 – Chrysler Corporation (then the owners of the Jeep emblem changed the Renix control gadget with OBD-I-compliant keep an eye on electronics, the Chrysler HO EFI).

Jeep History helps.The marque has long past through many homeowners, starting in 1941 with Willys, which produced the primary Civilian Jeep (CJ).Willys was offered to Kaiser in 1953, which was Kaiser-Jeep in 1963.American Motors (AMC) purchased the corporate in 1970.The Chrysler Corporation bought out AMC in 1987, shortly after the Jeep CJ used to be replaced with the AMC-designed Jeep Wrangler or YJ.Finally, Chrysler merged with Daimler-Benz in 1998 to form DaimlerChrysler.and now's Fiat in 2009.They did proceed to use "AMC" portions till the stock used to be depleted.wow!

via : fixkick.com

Just speedy journal right here, for pals with unhealthy ASD…

My 2008 JK jeep ignition coil. (the PCM monitors this coil, for unhealthy primary indicators) My JK Jeep the PCM might throw P2302 ionization error, and the FSM don't even point out bad spark plugs or the HV wires. (which causes this?, a 102,000 mile carrier level, that individuals SKIP, unhealthy spark plugs/wires)Both Spark plugs must fire, and habits or the principle present will NOT be correct and the ECU throws, IONIZATION errors.What that is, is the spark plasma at the spark plug tips. The spark in fact Ionizes the Air and fuel price, what we name FIRING. (the plasma forms a live resistor that the ECU reads, INDIRECTLY)If there is not any spark, there is no plasma and the coil number one present will probably be too low.This is what the test does, and isn't explained smartly, in the FSM.The Wranglers were given 3 coil pack machine, about 1996 (4.0L) but the 2.Five was once still distributor device, the Grand Cherokee ran this distributor until 1998 (and some COPS) the place they switched to COP coils in 1999 for every spark plug, Coil Over-Plug.By 1999 all fuel engine have been COP. 3.7 to six.2Liter. (with the exception of the 4.0L)The last 4. liter I-6 Jeep engine used to be at finish of the 2006 style year. (used in Wrangler) over Five million produced as of 2001,then Surplanted with the 3.8L.In each case, you might have 1 coil, Three coils (coil rail or pack) or 8 COPS. ( a quick look at your engine, and bingo, what you've is there)I point out all this, only for you probably have ASD relay problems because of primary ignition spark failure.