Question about Dodge Grand Caravan

3 Answers

I have a 02 grand caravan, there is fuse call asd that keeps on blowing.

Posted by on

  • Dave Johnson
    Dave Johnson Jul 06, 2015

    Check the wiring to the downstream O2 sensor under the van, I have found wires chafed and touching the Catalytic Converter this blew my fuse. Easy fix, separate the wires, and wrap each with a heavy tape or heat proof tape, and move away. This is a good place to check first.

×

3 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Sergeant:

    An expert that hasĀ over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 207 Answers

Well in a short term, you have a short circuit somewhere. Here is a detailed toturial for you. Please rate this post, thank you.

Automatic Shutdown (ASD) sense - PCM Input

The ASD sense circuit informs the PCM when the ASD relay energizes. A 12 volt signal at this input indicated to the PCM that the ASD has been activated. This input is used only to sense that the ASD relay is energized.
When energized, the ASD relay supplies battery voltage to the fuel injectors, ignition coils, and the heating element in each oxygen sensor. If the PCM does not receive 12 volts from this input after grounding the ASD reley, it sets a Diagnostic Trouble Code (DTC).

Automatic Shutdown Relay - PCM Output

The PCM operates the Automatic Shutdown (ASD) relay and fuel pump relay through one ground path. The PCM operates them by switching the ground path for the solenoid side of the realys on and off. Both realys turn on and off at the same time.
The ASD relay connects battery voltage to the fuel injectors and ignition coil. The fuel pump relay connects battery voltage to the fuel pump.
A buss bar in the power distribution center (PDC) supplies voltage to the solenoid side and contact side of the relay. The ASD relay power circuit contains a 20 amp fuse between the buss bar in the PDC and teh relay. The fuse also protects the power circuit for the fuel pump relay and pump. The fuse is located in teh PDC.
The PCM controls the relay by switching the ground path for the solenoid side of the relay on and off. The PCM turns the ground path off when the ignition switch is in the Off position. When the ignition switch is in the On or Crank position, the PCM monitors the crankshaft position sensor and the camshaft position sensor signals to determine engine speed and ignition timing (coil dwell). If the PCM does not receive the crankshaft position sensor and camshaft position when the ignition switch is in teh Run position, it will de-energize teh ASD relay.
The ASD relay and fuel pump relay are located in the PDC near the battery. The inside top of the PCD cover has a label showing relay and fuse location.

ASD and Fuel Pump Relays

The following description of operation and tests apply only to the Automatic Shutdown (ASD) and fuel pump relays. The terminals on the bottom of each relay are numbered.

'------------------'
' __85 ___________'
' __87A '87 '30 ___' Sorry for the crudeness of this. This is supposed to
' __86 ___________' be the relay terminals!
'------------------'

OPERATION
- Terminal number 30 is connected to battery voltage. For both the ASD and fuel pump relays, terminal 30 is connected to battery voltage at all times.
- The PCM grounds the coil side of the relay through terminal number 85.
- Terminal number 86 supplies voltage to the coil side of the relay.
- When the PCM de-energizes the ASD and fuel pump relays, terminal number 87A connects to terminal 30. This is the Off position. In the off position, voltage is not supplied to the rest of the circuit. Terminal 87A is the center terminal on the relay.
- When the PCM energizes the ASD and fuel pump relays, terminal 87 connects to terminal 30. This is the On position. Terminal 87 supplies voltage to the rest of the curcuit.

TESTING
The following procedure applies to the ASD and fuel pump relays.
(1) Remove relay from connector before testing.
(2) With the relay removed from the vehicle, use an ohmmeter to check the resistance between terminals 85 and 86. The resistance shoud be 75±5 ohms.
(3) Connect the ohmmeter between terminals 30 and 87A. The ohmmeter should show continuity between terminals 30 and 87A.
(4) Connect the ohmmeter between between terminals 87 and 30. The ohmmeter should not show continuity at this time.
(5) Connect one end of a jumper wire (16 guage or smaller) to relay terminal 85. Connect the other end of the jumper wire to the ground side of a 12 volt power source.
(6) Connect on end of another jumper wire (16 guage or smaller) to the power side of the 12 volt power source. Do not attach the other end of the jumper wire to the relay at this time.

WARNING: DO NOT ALLOW OHMMETER TO CONTACT TERMINALS 85 OR 86 DURING THIS TEST.

(7) Attach the other end of the jumper wire to relay terminal 86. This activates the relay. The ohmmeter should now show continuity between relay terminals 87 and 30. The ohmmeter should not show continuity between relay terminals 87A and 30.
(8) Disconnect jumper wires.
(9) Replace the relay if it did not pass the continuity and resistance tests. If the relay passed the tests, is operates properly. Check the remainder of the ASD and fuel pump curcuits.

__________________________________________________ _______________

I know you said you replaced the relay, and this is a test procedure for the relay, but I have bought bad parts in the past. The description before the test procedure at least gives you an idea of what components are wired through and controlled by the relay. One of those may be faulty. Email me if you want or need wiring diagrams and I should be able to scan them and email them to you.

I hope this helps.

Please rate this post, thank you

Posted on Apr 07, 2011

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

2000 dodge truck blowes 30amp engine fuse only it is warm & YOU TRY TO MOVE IT. iT WILL IDLE FOEVER SITTING STILL.

Posted on Apr 18, 2011

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

There is a wire harness over the top of transmission near trans dip stick wires are chaffed through and when van is put in gear the trans shifts foward grounding the wires

Posted on Sep 23, 2012

2 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 4125 Answers

SOURCE: i have a 02 grand caravan, there is a fuse call asd keeps on blowing

This fuse is the Automatic Shut Down fuse. If you are blowing this fuse you are pulling too much current on the critical engine circuit that it is protecting. This is many times caused by a short circuit in the wiring harness. This can be time consuming and difficult to track down.

Posted on Dec 07, 2013

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

The 25 amp ASD fuse keeps blowing when i try to start myTown & ountry 2001


In that case you have a dead short somewhere. This suggests replacing the ASD relay, and there is a neat trick using a bulb instead of a fuse to track the problem.

https://www.2carpros.com/questions/2001-dodge-caravan-asd-fuse

And 'Chrysler Tech' here has good advice as to what is causing it.
http://www.chryslerforum.com/forum/chrysler-pacifica-15/asd-fuse-blowing-right-away-help-23819/

25 amp ASD fuse Google Search

Jan 25, 2017 | Cars & Trucks

1 Answer

I have a 02 grand caravan, there is a fuse call asd keeps on blowing


This fuse is the Automatic Shut Down fuse. If you are blowing this fuse you are pulling too much current on the critical engine circuit that it is protecting. This is many times caused by a short circuit in the wiring harness. This can be time consuming and difficult to track down.

Dec 06, 2013 | Cars & Trucks

1 Answer

I have a 2001 dodge caravan. the asd fuse blows when you turn the key on. When I was driving the car just quit. We un hooked the alternator and coil pack and when u turn the key on it still blows the...


you must call some tech for to troubleshooting . This is a expertise skill for to fix short circuit.you must the VOM, for to tracking where is the short in your vehicle. Knowledge fro electricity and electronic must be required

God bless you

Oct 30, 2013 | 2001 Dodge Caravan

1 Answer

2003 dodge grand caravan turns over but wont start


Someone will need to trace that circuit to find the short.
There are a dozen or more components controlled by that relay.
You may need a wiring diagram and/or repair manual to troubleshoot it.

Aug 12, 2012 | 2003 Dodge Grand Caravan AWD

1 Answer

Asd 25a fuse blows every time i crank engine 2001 dodge grand caravan 3.3


Unplug these items,
- coil pack
- the multi wire connector on the back of the alternator
- both oxygen sensors

Install a new fuse and see if it blows when you turn the key on. If it does than there could be a problem with the fuel injectors or the wiring to the injectors or any of the items that where unplugged.

if it doesn't plug the coil pack back in and start the vehicle. If it blows with the coil pack plugged in replace the coil pack.

If it still doesn't blow with the coil pack plugged in and the engine running shut it down and plug in the alternator and start the vehicle. If it blos with the alternator plugged in replace the alternator.

Continue the same steps with the O2 sensors if needed.

If you have any questions let me know and I'll be happy to help. Thank you for using Fixya.com!

Jan 10, 2012 | 2001 Dodge Grand Caravan

1 Answer

My 20 AMP FP/ASD Gas, keeps blowing even off i went threw 4 in a row...really really frustrating


If the ASD blows the fuel pump fuse the fix is easy disconnect the battery go the the 02 sensor the one near the power steering pump here is the scenerio your 02 heater circuit has shorted to ground you will have to unravel the o2 harness you did add a year so i will assume its a 95 use this as a guide do you see the 02 heater and the nearest ground is the 02 sensor which can cause FP to blow opencansmo_10.gifcansmo_11.gif

Aug 22, 2011 | Plymouth Neon Cars & Trucks

1 Answer

'engine' fuse blows continuously


Sorry to say it, but take it to a shop. There's a serious chance that there's a problem with either the power To the ECM, or with the ECM, itself. A fallacy with diagnostics is that the "brain" never faults. I've replaced way too many in my day to believe this. Best of luck! You have a great vehicle, it just needs a little love ;)

May 22, 2010 | 2000 Dodge Grand Caravan

2 Answers

My 02' Grand Caravan front A/C is not blowing in the front


Could be the fuse for the front blower motor, or worse the motor itself.

Choice A is easy and not expensive. Choice B could be somewhat pricey, or really pricey if the dash has to come out for blower removal/replacement.

Don

Apr 13, 2010 | 2002 Dodge Grand Caravan

1 Answer

98 grand cherokee asd relay blowing fuse


The fuse it doing it's job, you have a short ( Wire that is connected to a ground, that draws too much power )

If you have an electrical schematic ( Repair manual ) find out which wires are connected to that fuse and check them for any chaffing, cuts, unnesassary twists, or corrosion.

If you have a ohm-meter, isolate the system ( by disconnecting the fuse, and other connections. Then check for any resistance on wires that should not be connected ( because you disconnected them ) by having one Lead on the wire's connector and the other meter-lead on your car's frame. A good wire will not have continuity if it is isolated.

Apr 10, 2010 | 1998 Jeep Grand Cherokee

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

2,165 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dodge Experts

yadayada
yadayada

Level 3 Expert

75117 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7772 Answers

Are you a Dodge Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...