Question about 1999 Jeep Grand Cherokee

2 Answers

1686 code came up on 99 jeep cherokee grand...what does this mean?

Jeep starts and runs for a few seconds then shuts off. ran test and code 1686 came up. is there a way I can bypass the anti theft relay to start it? Or how do I get them in sync again?

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Jeep Master
  • 20,706 Answers

Both keys fail, car came with 2,
never keep less than 2 or get stranded......
can be many things, cause but key tops list , and is the most easy to fix. get a reprogrammed key from dealer.
if you had 2, you can make a 3rd. DIY (rules are in operators guide, if you care to read them)

Posted on May 17, 2015

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 451 Answers

The p1686 code means :
No SKIM BUS Message received.
possible causes:
1. Invalid SKIM key.
2.wiring harness intermittent defect.
3.PCM DEF INTERNAL PCI BUS OPEN.
4.PCM PCI BUS CIRCUIT OPEN.
The first thing I would do is check the wiring harness unplug and check for loose pins then reconnect. Hope this helps.

Posted on Dec 29, 2013

  • Michael Miller
    Michael Miller May 17, 2015

    Were is the plug for the PCM located on my jeep

×

4 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

  • 118 Answers

SOURCE: How can I reset my Factory Alarm on my Jeep it wont run

Alarm Module Reset Procedure
NOTE: This information applies to a Vehicle Theft Security System (VTSS) that was armed when the battery was disconnected and reconnected.
When the armed VTSS senses that the battery has been disconnected and reconnected, it enters its power-up mode. In the power-up mode the alarm system remains armed following a battery failure or disconnect. If the VTSS was armed prior to a battery disconnect or failure, the system will have to be actively or passively disarmed following a battery reconnection.
The power-up mode will also apply if the battery goes dead while the system is armed and battery jump-starting is attempted. The engine no-run feature will prevent the engine from starting until the alarm system has been actively or passively disarmed.
Passive disarming of the Vehicle Theft Security System (VTSS) occurs when the vehicle is unlocked using the key to unlock either front door or the lift gate. Active disarming of the VTSS occurs when the vehicle is unlocked by depressing the Unlock button of the Remote Keyless Entry (RKE) transmitter.
Once the alarm has been activated (horn sounding, lights flashing, and the engine no-run feature), either disarming method will deactivate the alarm.
Depressing the Panic button (if equipped) on the RKE transmitter will also disarm the VTSS, but the horn will sound and the lights will flash for about three minutes as part of the Panic feature. The horn and lights can be stopped by pressing any of the RKE transmitter's buttons or driving the vehicle above 15 mph.

Posted on Jan 28, 2009

davidfink327
  • 140 Answers

SOURCE: 1996 Jeep Grand Cherokee - Will Not Start or Run

they have crankshaft sencers on the transmission on jeeps. it would be up high on the drivers side on front of transmission. they will cause it to not get fuel or fire and can run then quit.

Posted on Sep 21, 2012

  • 819 Answers

SOURCE: how do i override/reset anti theft system?

this does not sound like an antitheft problem. the SKIS systems in the jeeps will allow the truck to start, but it will turn off again after 5 seconds.

FYI if your jeep key is gray, it has the SKIS system. if it is a black key, it does not.

have you already done diagnostics for a no start? if you are lacking fuel or spark, you need to look elsewhere for the problem if it does not start at all. good luck!

Posted on Jul 07, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

1999 Jeep Cherokee grand..starts for a few seconds and shuts off


dies it have IMMO???? the IMMOBILZER?
id the light glowing, saying IM UNHAPPY?
1st google hit, of 6000 says SKIM failure.
been swapping major electronics ?
i see you left out the full story.
i did X and not SKIM is unhappy// what is X?

the FSM covers this, read the FSM>
or goggle Jeep SKIM

Smart Key Immobilizer Module = SKIM

Dec 29, 2013 | 1999 Jeep Grand Cherokee

1 Answer

What does the code 1686 mean for a jeep grand cherokee


you have dash lamps acting funny?
diesel engine? or gas, and what displacement? 4.0 , 4.7
P1686


did the immo lamp glow.
did you scan the PCM and see if 1685 (wrong key code)
1686, rigth out of fsm

Trouble Code: P1686 4.7L
No SKIM Bus Messages Received
Number of Trips to Set Code: 1
PCM details.
Trouble Code Conditions:
Engine started; and the PCM did not detect any MIC (I/P Cluster) messages over the Data Bus circuit for 20 seconds.
Possible Causes:
  • Data Bus circuit from MIC to the PCM is damaged or it is open
  • Instrument Cluster is damaged or has failed
  • PCM unable to communicate with the Instrument Cluster
  • PCM has failed
this means, the PCM can not talk to the I/P cluster puter.
comm fail.
even wilder guess is PCM talks to KEY via cluster so if cluster dead
so be key.
bad fuses ?

the FSm dont cover defeating any alrarms or IMMO less crooks read it. so...... google it.

Dec 29, 2013 | 1999 Jeep Grand Cherokee

1 Answer

DTC's P1686 P1687


Code 1687 means the computer lost power, probably when you disconnected the battery. Code 1686 means the computer is not talking to the instrument panel.
It could be the cluster or a wiring problem. Since you disconnected the battery, the computer may have to re-learn its parameters to know what the base idle should be. You may have to try to drive it a few miles.

Jul 03, 2013 | 2004 Jeep Wrangler

1 Answer

My jeep grand cherokee 96 v8 will start just for a few seconds and shut down and the headlights flash on and off after it die


I would call a dealer because usually when there's flashing lights involved it's a code. If it runs for a few seconds then dies it could be a plugged fuel pump or plugged line. The pump is able to pull enough fuel to let it run for a short time but then runs out. Hope it helps.

Sep 06, 2010 | 1996 Jeep Grand Cherokee

2 Answers

93' Grand Cherokee, dont start, no spark,no gas preassure


my 1996 jeep grand cherokee lmtd. won't start did tune up. cranks but no fire. please help. engine code 54 shows up . cam shaft positioning no signal. . tested all circuit. changed cam shaft positioning sensor twice.still cranks did start once ran for 5 min. changed the sensor again. no luck. help please. keith

Sep 10, 2009 | 1993 Jeep Grand Cherokee

1 Answer

1993 Jeep Grand Cherokee engine problems


First run a code check, see what you find. Second, you can do individual component testing with a decent volt/ohmeter to pinpoint problem. (instructions for tests in any decent manual)
Just off-hand, most common failure with similar symptoms to yours is crank position sensor.

Apr 27, 2009 | 1993 Jeep Grand Cherokee

Not finding what you are looking for?
1999 Jeep Grand Cherokee Logo

271 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

75797 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8152 Answers

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

Answer questions

Manuals & User Guides

Loading...