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Error Code P1491 Jeep Grand Cherokee


Clutch pulls in and it cools good. Cant afford more shop bills (got layed-off after thanksgiving) When it rains, it pours right. FAN RELAY TEST 2: Checking for Ground. That was until I started the jeep and the check engine light went on.

Yes Go To 644No Repair the open Ground Circuit.644 Turn ignition off.Disconnect the PCM Connector.Note: Check connectors - Clean/repair as necessary.Disconnect the Radiator Fan Relay Connector.Note: Check connectors - Clean/repair as I havent really addressed how to fix the short because the fan relay works good now without any problems but the engine light remains on. Credentials confirmed by a Fortune 500 verification firm. So I bought a new relay when I went to install it under the headlight the old relay was unplugged. try this

P1491 Jeep Liberty

or it's affiliates. Love it. WHERE can I get the info on these codes P1594 P0303 p1491 (Rad fan relay) My rad fan is not working currently.

What may be the problem the bad PCM I got code p1491 last night again in mine. Top gator 69 Posts: 7 Joined: Mon Apr 26, 2010 10:19 pm Re: 2001 jeep grand cherokee laredo p 1491 Quote Postby gator 69 » Wed Apr 28, 2010 8:42 pm Anmelden 41 Wird geladen... P1491 Jeep Grand Cherokee 2002 Top Top jeff compton Posts: 7602 Joined: Tue Jan 10, 2006 2:09 pm Location: Kingston Ontario Canada Contact: Contact jeff compton Yahoo Messenger Re: 2001 jeep grand cherokee laredo p 1491

Shortly after my engine started to overheat. P1491 Jeep Xj Melde dich bei YouTube an, damit dein Feedback gezählt wird. I installed the new fan and set the fan relay. http://www.jeepforum.com/forum/f13/p1491-help-437384/ To get to it you have to remove the front bumper cover and headlamp bracketry to access the relay.

The thermal resister on the head tests the same as a new one out of the box. P56010410ac I have several codes on my odo display. No Test Complete.643 Turn ignition off.Disconnect the Radiator Fan Relay.Using an ohmmeter, measure the Radiator Fan Relay Ground Circuit to Ground.Is the resistance below 5.0 ohms? Be sure and check fuse #5 which is a 40 amp fuse.

P1491 Jeep Xj

They said it would not delete had code p1491 for relay circuit bad. http://troubleshootmyvehicle.com/jeep/4.0L/how-to-test-the-pwm-relay-1 Is there another sensor or relay in line with that? P1491 Jeep Liberty characters left:

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Automotive advices jeep grand cherokee code p1491 jeep grand cherokee code p1491 Cars related to phrase jeep grand cherokee code p1491 jeep grand cherokee code p1491 II WJ Answers and questions: P1491 means the powertrain control module (PCM) can't communicate with the fan relay circuit. Wiedergabeliste Warteschlange __count__/__total__ Replacing the fan relay on 00 - 03 Jeep Grand Cherokee srcoyote888 AbonnierenAbonniertAbo beenden157157 Wird geladen... Anzeige Autoplay Wenn Autoplay aktiviert ist, wird die Wiedergabe automatisch mit einem der aktuellen Videovorschläge fortgesetzt. P1491 Jeep Liberty 2003

I noticed that the radiator cooling fan is not coming on at all so I replaced the radiator cooling fan relay and it still didnt work so then I replaced the Cant sign off expired registration ticket without smog. Ask sprinkles08 Your Own Question sprinkles08, ASE Certified Technician Category: Jeep Satisfied Customers: 21355 Experience: Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist 9825021 Type Your Jeep Testing the fan relay is easy, the hardest part is getting to it...

but will not cycle on air cond. P1494 Jeep Was stopping to see my mechanice anyways so we checked it out. The wires are good.

It doesn't blow air. 2 answers A big poof of dust came flying through the vents after I turned on my fan switch.

Bear in mind my A/C does not work. While letting my engine cool on the side of the road, we noticed that my auxillary cooling fan was not on. Wird geladen... 2000 Jeep Cherokee P1491 Melde dich an, um dieses Video zur Playlist "Später ansehen" hinzuzufügen.

If that code comes right back right away then i normally means to the pcm the relay is no good which is possible with alot of aftermarket parts and yes I SPONSORED LINKS Was this answer helpful?YesNo Friday, January 29th, 2010 AT 9:12 PM Bluekrawler Member Shop told me they traced my wires upto the PCM. Checked fuses all ok. Thank you for submit new forum.

So here is the rundown of my commute this morning. 15 minutes of highway driving at highway speeds - no problem 10 minutes of stop and go traffic on the highway Wird verarbeitet...