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What does a JB Power 50 AMP fuse go to? - 2001 Jeep Grand Cherokee

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I have a 66 miliamp draw on JB power fuse #7 in the underhood box. Is this excessive?


Not really , there say 50 milliamps as a rule of thumb . What does fuse #7 power ? Are all the doors shut , did you let the control modules on the vehicle power down ? You would know it if something was on , probably have over 100 milliamps or more .

Dec 30, 2016 | Cars & Trucks

2 Answers

What can be done about the draining of the battery by the jb power fuse on the 2002 grand Cherokee right hand drive


What ? jb power fuse ? Why don't you say what jb is ? I'm assuming you mean junction box . Were not mind readers ! Regardless you have a parasitic draw on one of the circuits in the junction box , Hook up a amp meter between the negative battery post an negative battery cable . Shouldn't have more then 50 milliamp draw . Pull the fuse's one at a time till the drain goes away . Look at a wiring diagram for that circuit to see what all is on it . isolate an fix . Videos on youtube showing how to trouble shoot ! How To Perform Parasitic Draw Test EricTheCarGuy

Aug 27, 2016 | 2002 Jeep Grand Cherokee

1 Answer

Hi anyone know what number fuse is for cig lighter on a grand jeep cherokee 2003 please


which one, ???
cig or power outlets. there are 3. of them 2 front 1 rear.
the number is
fuse 26 runs cig relay. main feed
fuse 29 runs cig relay coil.
both are in the JB, junction box.
power outlet rear is fuse 27 PDC
power outlet front is fuse 9 JB.

May 12, 2016 | Jeep Cars & Trucks

1 Answer

No sound from radio -"No RDS" - nor CD nor tape.....


the fuse blew,
that is always what to do when any electrics die.
check fuses
same fuses for both radio options.
fuse 1 and 20.
fuse 2 is memory
fuse 1 is key on power, (bingo !)
in JB
JB is cab box. junction box.


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May 09, 2016 | 1999 Jeep Grand Cherokee

1 Answer

What fuse disables power mirrors?


99 WJ , FSM covers this.
did you scan the PCM first?
which one , left or right, why not say that? as its key.
both doors have door controller brain. (complex)
both run off batter A146 feed. JB. fuse 12 , in PDC. 50 amps.

Mar 13, 2015 | 1999 Jeep Grand Cherokee

1 Answer

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
is the load that is leaking, (phantom drains)
easy, huh, just 4 fuse to pull.
Cab box, only. called JB on all jeeps.
jb fuse 5 is radio.
jb fuse 7 is HVAC zone control (heat?) skim mod. & auto head lamp sensor & BCM memory, (yes lots)
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.

Jan 17, 2015 | 2003 Jeep Grand Cherokee

1 Answer

Clock and power locks dont work


Several to check--In Instrument Panel JB (behind left side of dash) Gauge Fuse 7.5Amp--Power Fuse 30Amp---Door Fuse 30Amp--ECU-1G Fuse 10Amp------In Engine Room JB (L/F Inner Fender Panel) Dome Fuse 7.5Amp

Mar 15, 2014 | Toyota Avalon Cars & Trucks

1 Answer

Jb power fuse drains battery


The JB fuse under the hood is the power supply for the fuse box inside of the vehicle, if the battery drain goes away when JB fuse is removed is only because you have isolated the interior from the rest of the vehicle. These vehicles have issues with the body harness connector on the drivers side floor. To access the connector remove the rear seat and pull back the carpet, the connector is located directly below the drivers side rear seat bottom. Unscrew the 10mm bolt that holds the connector halves together and inspect for corrosion. If corrosion is present, repair as needed and your battery drain should go away.

Jan 23, 2011 | 2002 Jeep Liberty

2 Answers

No brake lights,have replaced all bulbs and brake light switch is good what left


you could just have abrake light switch problem located on your brake pedal. i have ran across a bad connection at the fuse box.

1. Check power in and out of the dash fuse box. Power comes in through connector JB-10 and goes out of JB-05 and JB-07, all White/Green wires. The connectors plug into the back of the dash fuse box. If there is power in and no power out, the problem is in the dash fuse box.

Nov 07, 2009 | Mazda 626 Cars & Trucks

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