Question about 2006 Jeep Liberty

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I have a slow battery drain on a 2006 Jeep Liberty. Pulling either fuse #34 from the dash fuse box or #7 under the hood (labeled JB Power) will eliminate the drain. According to the owner's manual #34 controls the interior lights, hands free radio control, etc. What is JB Power? Do you recommend replacing the appropriate module?

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Hi
Welcome
Jb power is Junction Block power
Here is a list of tests for this problom

IGNITION-OFF DRAW TEST The term Ignition-Off Draw (IOD) identifies a normal condition where power is being drained from the battery with the ignition switch in the Off position. A normal vehicle electrical system will draw from five to thirty-five milliamperes (0.005 to 0.035 ampere) with the ignition switch in the Off position, and all non-ignition controlled circuits in proper working order. Up to thirty-five milliamperes are needed to enable the memory functions for the Powertrain Control Module (PCM), digital clock, electronically tuned radio, and other modules which may vary with the vehicle equipment.
A vehicle that has not been operated for approximately twenty days, may discharge the battery to an inadequate level. When a vehicle will not be used for twenty days or more (stored), remove the IOD fuse from the Junction Block (JB). This will reduce battery discharging.
Excessive IOD can be caused by:

  1. Electrical items left on.
  2. Inoperative or improperly adjusted switches.
  3. Inoperative or shorted electronic modules and components.
  4. An internally shorted generator.
  5. Intermittent shorts in the wiring.
If the IOD is over thirty-five milliamperes, the problem must be found and corrected before replacing a battery. In most cases, the battery can be charged and returned to service after the excessive IOD condition has been corrected.
1. Verify that all electrical accessories are off. Turn off all lamps, remove the ignition key, and close all doors. If the vehicle is equipped with an illuminated entry system or an electronically tuned radio, allow the electronic timer function of these systems to automatically shut off (time out). This may take up to three minutes. See the Electronic Module Ignition-Off Draw Table for more information.
ELECTRONIC MODULE IGNITION-OFF DRAW (IOD) TABLE Module Time Out?
(If Yes, Interval And Wake-Up Input)
IOD IOD After Time Out Radio No 1 to 3 milliamperes N/A Audio Power Amplifier No up to 1 milliampere N/A Central Timer Module (CTM) No 4.75 milliamperes (max.) N/A Powertrain Control Module (PCM) No 0.95 milliampere N/A ElectroMechanical Instrument Cluster (EMIC) No 0.44 milliampere N/A Combination Flasher No 0.08 milliampere N/A 2. Determine that the underhood lamp is operating properly, then disconnect the lamp wire harness connector or remove the lamp bulb. 3. Disconnect the battery negative cable. 4. Set an electronic digital multi-meter to its highest amperage scale. Connect the multi-meter between the disconnected battery negative cable terminal clamp and the battery negative terminal post. Make sure that the doors remain closed so that the illuminated entry system is not activated. The multi-meter amperage reading may remain high for up to three minutes, or may not give any reading at all while set in the highest amperage scale, depending upon the electrical equipment in the vehicle. The multi-meter leads must be securely clamped to the battery negative cable terminal clamp and the battery negative terminal post. If continuity between the battery negative terminal post and the negative cable terminal clamp is lost during any part of the IOD test, the electronic timer function will be activated and all of the tests will have to be repeated. 5. After about three minutes, the high-amperage IOD reading on the multi-meter should become very low or nonexistent, depending upon the electrical equipment in the vehicle. If the amperage reading remains high, remove and replace each fuse in the Power Distribution Center (PDC) , one at a time until the amperage reading becomes very low, or nonexistent. (Refer to 04 - Vehicle Quick Reference/Fuse Locations and Types - Specifications) for the appropriate wiring information for complete PDC and TIPM fuse, circuit breaker, and circuit identification. This will isolate each circuit and identify the circuit that is the source of the high-amperage IOD. If the amperage reading remains high after removing and replacing each fuse and circuit breaker, disconnect the wire harness from the generator. If the amperage reading now becomes very low or nonexistent, diagnose and repair the Charging System as necessary. After the high-amperage IOD has been corrected, switch the multi-meter to progressively lower amperage scales and, if necessary, repeat the fuse and circuit breaker remove-and-replace process to identify and correct all sources of excessive IOD. It is now safe to select the lowest milliampere scale of the multi-meter to check the low-amperage IOD.
CAUTION: Do not open any doors, or turn on any electrical accessories with the lowest milliampere scale selected, or the multi-meter may be damaged.

6. Observe the multi-meter reading. The low-amperage IOD should not exceed thirty-five milliamperes (0.035 ampere). If the current draw exceeds thirty-five milliamperes, isolate each circuit using the fuse and circuit breaker remove-and-replace process in Step #5 . The multi-meter reading will drop to within the acceptable limit when the source of the excessive current draw is disconnected. Repair this circuit as required; whether a wiring short, incorrect switch adjustment, or an inoperative component is the cause.

Posted on Jul 13, 2010

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Have no dash lights on my 2006 jeep liberty renagade my manual does not show a fuse for the dashlights


dear linda
car drives ok? (shoe on other foot drops. omg)
head lamps work, park lamps, turns ,brake, reverse?
wiring is complex,
rule 1, on all complex systems, like this
there is not one fuse for every load on the system.!
takes 100's fuse or more to do that,
rule2, most fuse(not all) are shared, so names based
on say the most common of 10 things off 1 fuse.
say park lamps.
I have no IDEA at alllwhat DASH lamps means.???????????
can you be just a bit more specific,. keep in mind we are blind here.

the cluster is an object,(coin toss 1)
it has many warning lamps.,inside, CEL is top lamp to glow.
CEL glows engine can run.
most warning lamps glow, key on. you have NONE?
then the cluster has background lamps. that glow in park or headlamp on mode and have a dimmer, that can be set wrong.
in shop lacking the book or the online book
one has 2 choices. (look for blown fuses, (all) or test them (ALL)
lacking books, what other why can there be.

cluster power
is JB 13 and 34 fuses. (or JB F9 ,park)
JB means cab box.

the cluster is a data monitor
that gets date from a network.
the park relay dead kills the cluster back ground illumination .

tell more get more...??? even photos of dead lamps is amazing.

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What is wrong when I pull JB Power #15 50 amp fuse the drain g


2003 jeep GC, or WJ jeep, it is..?
there are no 50a fuses in any JB,
there are just 4 in the PDC. engine bay.
so, JB is wrong, input to me.
ill assume F15 is correct, and not F3/7/12 in PDC
F15 feeds JB via a pink wire. (pk-wt)
this main F15 feed JB , F5,7,8,9 fuse in cab.

so pull fuse 5 to 9 there and the one that ends the drain
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easy, huh, just 4 fuse to pull.
Cab box, only. called JB on all jeeps.
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jb fuse 8 is (12 courtesy lamps , intrusion module(export) and VICS, vehicle info center(memory)
jb fuse 9, front12vdc power outlets (cig ports modern) Cell Phone arked there?

or login at alldata.com and see all that, in the wiring pages.

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Which fuse controls the map lights in the 2002 jeep liberty


map light? and no symptoms..

the dimmers on the HL stalk. (held lamp , park dash dimmer)
if the power to the map is dead so will many other things be dead.
lost the 2002 operators guide, ?
in cars 1 fuse runs many things. thus my others dead comment.
why not be clear, , the overhead dome map light. say where
hand is, because many cars have dash map lamps, so.....
my hand is on the DOME light above and its what DEAD?
i log into alldata.com so can you.
i look at this schematic, and there are 2 lamps
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but they both use the same fuse. so are both dead.?front and rear?
or both stuck on? what are the symptoms.?

both lamps have manual direct control (sw) PUSH THEM ?
If not in manual mode, there are controlled by the BODY computer BCM..
both run off JB1, fuse 34.
now i bet the next question is where is fuse 34, well its in the JB.
and where is JB its at your left knee, (USA only LHD only. comments )
fuse 34 runs the foot courtesy lamps... are they dead?
and visor vanity.
there are 2 fuse boxes. one in engine bay and one in cab, some cars
3.
JB =means cab
PDC fuse box is engine bay, Jeep lingo...
JB is in plain view above left ankle, look down then up and left.
bingo JB.
the box had fuse and relay ID's
the operators guide shows , all the fuses and name.

i dont have the OP guide so cant find the name for Fuse 34.
but there is no need yet if the other lamps work then FUSE 34 is good.
and is 15amps.

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Jb power fuse drains battery


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