Question about 1998 Jeep Grand Cherokee

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Electrical - cluster failure

Hello, Need pin out voltages for a 98 grand cherokee larado connector to the cluster .( RHDrive )
Not willing to insert a new cluster untill loom checks out. My connector shows different to the infrmation provided by a friendly Adelaide jeep dealership. ( South Australia) Most manuals show this info but have only got wrangler and cherokee CD's not Grand cherokee 98 !!!!
Also, most diagrams show 2 ground terminals and mine reads as if there is no earth. I HAVE left and right indicators, one (fused at kisk panel fuse group OK ) constant 12 volts one 12 volt ign.start run, one dimmer control terminal, and 2 terminals reading 2.5 volts approx , assume these are the "bus" lines.
WHAT are the others and does any one know how to check out the new cluster to make sure it is the correct one ????

Have had an intermittent Failure of fuse control coils of auto shut down and fuel pump relays for several years now .fault goes before able to trace it. Longest the fault lasted was 20mins but still unable to find cause by discconecting items etc.As soon as I start looking for short in circuit before or in parallel with the relay coil circuits the fault disappears and I haveonly moved the power distribution box cover and tried to insert a test light in the circuit. Ffinally cluster has failed permently on all but hard wired items .ie no gauges and warning lights but dimmer control and ABS warning light working? . vehicle towed home. Fault gone no fuse blows but still no cluster. All other systems working .
My non genuine wiring diagrams show only imobiliser on same circuit but this system works although I am not sure if the chime worked immediately,. I think imobiliser is in module with sound device etc. But not sure .
Have stripped out loom around power distribution box - no visible damage and no electrical fault between relay coil to power control computer . Any way if there was an earth ing fault there the fuse would not blow. Must be a fault between fuse and relay but this goes into the main loom and difficult to get to. If I bypass it car starts now because there is not a problem. When I tried to bypass the fuse with another in line from hot side of fuse to relay input with the problem, the car started and then I found the problem goneso ofcoursethe car started . returned wires to original but cluster not working! !!!!!!*&^*^&%
cheers Kym Ware
ps i am a motor mechanic not an auto electrician!!!

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  • 6 more comments 
  • kymlin Jul 10, 2008

    Thanks Ginco , but cannot find the cluster 10 pin connectore there???



  • kymlin Jul 10, 2008

    Hello, vin no: is 1J4GZB8S5WY114165 so what model is this Laredo ???? need instrument cluster info not radio but thanks Ginko for the interesting site.

  • kymlin Jul 10, 2008

    Thanks S4u311 this is close but not on the bulls eye! I have a 98 ZJ Grand cherokee Larado apparently. It is a 6 cyl 4.0 lt engine. For some reason I do not seem to be able to find a workshop manual anyware??? vin no 1J4GZB8S5WY114165

    any ideas welcomed


  • kymlin Jul 10, 2008

    have checked out the circuit again today and relay control which occasionally blows a 20amp fuse has now a 5 amp on it to go immediately while idling in the garage, but no problem today. Am driving around with a instrument cluster which has no tacho, no speedo etc , spooky


  • kymlin Jul 10, 2008

    Thanks Ginco, glad to know some one has ideas. I have the Hayes manual and it is good for some things. But does not cover the cluster or says something like use the dealership scanner. Done that paid for scan and no result. Dealer naturally unable to put a rough estimate of cost. Due to intermitant fuse failure. Also gave me wrong print out for vehicle !!! I will try another dealer eventually if all else fails. Auto electricians also say find a wiring diagram. I cannot believe it is so hard ?

  • kymlin Jul 10, 2008

    Wow thanks but ....sadly the 98 cluster has a rectangular 10 pin connector. I might try this tom o jeep site and ask the question there hey ?

    cheers and thanks but any other ideas welcome


  • kymlin Jul 10, 2008

    Hi Ginco, have replaced all relays several times, have bypassed parts of the circuit for the fuel pump relay for about 6 months , no problems . but recently the section of the loom between the relay coil fuse to the auto shut down blue the fuse , I had a few minutes to deliberalty put a 20amp resetable fuse in for a while and search for hot spots. No luck. But the cluster had gone out and did not come back on ! ie the cluster always dropped out when this fuse blew. So logically the cluster is the problem but 3 auto electricians have told me that it should not be the cluster .

    I will rewire both relay circuits to the relay coils next although all systems are working except the cluster. I am not sure what to do to the cluster connectors. The XJ cherokee diagrams 97 and 99 show 2 ground circuits and I do not have any ?????? So tomorrow will put in ground circuits on a couple of pins but it will be a gamble unless I can get a diagram.I know 6 of the 10 pins !!!!



  • Anonymous Mar 11, 2014

    were is the fuel shutoff switch on a 1983 colt cl wagon


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Fuel pump is good, but no fuel pressure? How did you determine that the pump is good?
The ff
Failing gages point towards a problem with the PCI data bus or the PCM itself. This takes quite some troubleshooting to find the cause.
There are many components connected to the PCI bus and any of them could bring the bus down. You can measure the voltage on pin 2 of the data connector on the left side of the drivers footwell area. A good bus voltage is around 2.5 V. There is a PCI bus disconnect plug under the steering tube. By removing the shorting cap, you will disconnect almost all components from the bus. PCM and SKIM will still be connected and you could try to run the engine. You will ot have instruments nor most of the other systems, but this is only to see if the PCM works ok. If it runs, then you will have to look which component or bus wire gives the problem.

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REMOVAL & INSTALLATION Conventional Cluster Fig. 1: Remove the trim screw covers on the driver's and . . . 89606p41.jpg
Fig. 2: . . . passenger side of the instrument cluster 89606p42.jpg
Fig. 3: Remove the upper trim panel retaining screws 89606p43.jpg
Fig. 4: Remove the headlight switch knob 89606p44.jpg
Fig. 5: Detach the electrical connectors for the trim panel and remove it from the vehicle 89606p45.jpg
Fig. 6: Remove the instrument cluster retaining screws from either side of the cluster 89606p46.jpg
Fig. 7: Remove the transmission range indicator cable 89606p47.jpg
Fig. 8: Slide the cluster out and detach the electrical connectors and . . . 89606p48.jpg
Fig. 9: . . . . remove the instrument cluster from the vehicle 89606p49.jpg
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98 jeep Grandcherokee instrument cluster failure

OP sorry you are fixing a car you dont understand.
no engine stated, nor size or gas or diesel
and is a stalls post!
located DOWN under, zillion miles from us...oh joy;

the post a WG jeep (to usa) we dont have them here in USA, zero.

then post wall of text and endless problems
why stick to just one, fix that and move on.
pick one.(ASD is serious )
be best here, in serial endless, posts land.
i hate to pop your bubble but mechanics is now 1/2 electronics! facts.

EFI , and networks too. sorry but you need some class time.
I see you are mixing up different jeeps data.
why mix one countries books with others,for sure yours and ours
our 98 is WJ jeep ONLY sold only here.
outside usa. JG or, ZG, WG
sorry they are not the same car, nor are the clusters.

wow. nor many other things same,most of which are governed by each countries laws
KUDOS or 11th person ever here stating country, gee there is hope.
way to go there,here is big fat cigar and lotto ticket as prize! HOORAY!

this car runs from 1993 to 2017 and beyond
so vast books on them. huge by country (market)
you can not swap cluster willly-nilly, due to odometer laws
if you read the cluster page,(SM) it told you that
SM = service manual.
and yes, cluster runs on a network, all GC are.

if you had read the cluster chapter it told you
how to do the cluster self test diagnosis(methods)
costs 0 bucks 0 tools.
so if that passed, you scan the PCM
to see if there are no communication errors to the cluster.
no cluster can work on a DEAD NETWORK
just like dead WIFI, same same. deal.

you failed both steps; guessing here, is not possible.
seems like we can delete you whole post
and add this.
"Have had an intermittent Failure of injectors and ignition coils,l auto shut down and fuel pump relays for several years now:
sure many do... and will never be fixed, ever lacking a scan too. (I promise)

if then car has IMMO lamp,(lamp12> right corner)
if it glows at any time driving,that means KEY FAILURE.
"security key:" if in fact is is opted, and in europe they run there own, SKIM IMMO systems there. even back to 1996.

so not fitted with IMMO
then you must scan the PCM to see why the pcm Cut the ASD relay, you MUST there is NO other way possible
sorry, but is a FACT

so post, car drops ASD random times
and forget all that other stuff.

check IMMOBILIZer lamp.
scan it now.
if fail scan not,or even before failure we scan live driving
for fact the PCM will tell you WHO failed
is this hard? no!

if no scantool

BRICKwall results.

here is skim 2002 skim
see that lamp.. if it goes on driving all jeeps made on earth STALL,(BY DESIGN)
and 6 more causes of ASD drop and stalls.
salls have 50 cause,but im talking only ASD drop
induced STALLS

Feb 26, 2017 | 1998 Jeep Grand Cherokee

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