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2011 compass no start

Discussion in 'Compacts: Renegade, Patriot, Compass, Caliber' started by bguy, Mar 22, 2017.

  1. bguy

    bguy Well-Known Member

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    Wife just called to say the Jeep winds over but no start. The engine light and the throttle light are on. I'm at work and she's getting a ride home.
    First thing to look for?
     
  2. gforce2002

    gforce2002 Well-Known Member

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    Out of gas? I dunno, my Dad always said that if an engine doesn't start it can only be a spark problem or a fuel delivery problem. (Of course, a lot of things can affect those two things.)
     
  3. Rick Anderson

    Rick Anderson Well-Known Member

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    Ummm, no ignition (spark) would cause a vehicle not to start, and there are many others.

    The Drive-by-Wire electronic throttle caution light coming on might be a big clue. Something malfunctions with that, its not hard to imagine it wouldn't allow the engine to start.

    I've gotten the light and simply turning the ignition off and turning it on again cleared the problem. I don't know if your wife just made one attempt at starting and never turned the key all the way off before doing another attempt. Its worth a try. But first to look into is the electronic throttle.

    Do you know how to do the key dance to get codes to spit out on the odometer? I think in 2011 Chrysler cars still had the feature, FCA removed the feature in later vehicles. Do a youtube search for the Chrysler Key Dance so you can get the OBDII codes, that is the first place to start and if there are codes for the electronic throttle, then you know its your problem.
     
  4. Doug D

    Doug D Virginia Gentleman

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    Fuel pump? Relays?
     
  5. AllanC

    AllanC Well-Known Member

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    When you first turn the ignition switch to ON / RUN you should hear the electrical fuel pump power up for about 1 - 2 seconds. Does this happen? You may have to station someone outside and near the rear of the vehicle to detect. If NO fuel pump sound there is an electrical problem with the fuel pump load and / or control circuit.

    Engage the starter for a few seconds and then release the ignition switch to ON / RUN. You should hear the electric fuel pump continue to run for 1 - 2 seconds and then power down. If you do not hear the power down, then it is possible that the crankshaft position sensor is not sending the proper signal to the PCM (powertrain control module) that the crankshaft is rotating. The PCM needs to know that the crankshaft is rotating before powering up the electric fuel pump.

    After a few quick checks time to try and pinpoint the reason for the NO START condition. Connect a scan tool to the OBD II port and retrieve codes. That will give a direction for diagnosis.
     
    Doug D likes this.
  6. bguy

    bguy Well-Known Member

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    This is 2.4 CVT 4D 4WD.
    Has over half tank of fuel.
    I can hear the pump running ( it doesn't cut out while the key is on ).
    My Innova 3100 says there are no DTCs although the Engine light stays on after the throttle warning light goes out.
    I doesn't crank really fast like the timing belt was off so I believe the compression should be good at 75000 KM.

    And I can understand why the mileage would be lacking. Man that thing is hard to push even on level ground!
     
  7. ImperialCrown

    Level III Supporter

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    The 2.4L WGE has a timing chain, not belt.
    The fuel pump and pressure can be fine, but if the injectors aren't opening because of no signal, then gas still isn't getting to the cylinders. You can try a shot of solvent into the throttle body to test for this. If there is good spark and timing is OK, it should fire briefly.
    Spark plug tips may tell a story if they're wet or fouled?
    The ck eng light may stay on until it starts up. I wouldn't pay too much attention to this if no codes are present.
    AWD can be hard to push if you are fighting against the clutches, especially if the front wheels are turned.
     
  8. bguy

    bguy Well-Known Member

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    Pulled a plug.
    Dry.
    Deep tan. Kind of a Moab orangey tan. I felt it to be a serviceable plug.
    So I pulled the inlet tube from the air cleaner housing and put a drop of raw fuel in the tube. The throttle body is down by the motor mount/ under the manifold so the fuel went into the air cleaner end, maybe a 1/4 oz.
    No hint of running with and without the accelerator depressed ( I realize there's no physical link ).
    Final thing I did was to pull a coil off ( 2nd from the right, #3? ), put a new out of the box plug in the wire and grounded it on the hoisting loop. No spark.
    Whatever the issue is the computer doesn't think it needs spark.
     
  9. ImperialCrown

    Level III Supporter

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    Does your Innova show the presence of a crank/cam position sensor signal while cranking?
     
  10. bguy

    bguy Well-Known Member

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    I was looking for blown fuse (none).
    I can't find a relay bank?
    IC From the booklet I don't think the Innova will read while cranking. I must admit I've never used it's full potential. I'll give her a go tonight.
    I don't want the dealer to find something stupid like a blown relay or bad connector. It's most of my day I have to take off work plus 130km round trip to get the car carrier and drop it off. Wife made an appointment for 1:00 tomorrow.
     
  11. ImperialCrown

    Level III Supporter

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    Most fuse and mechanical relay duties have been taken over by solid-state drivers in the TIPM.
    If a short circuit occurs in the wiring or the component, the TIPM will shutdown power to that circuit for protection. It will set a fault code for either open or short circuits.
    Can the Innova read TIPM fault codes?
     
  12. bguy

    bguy Well-Known Member

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    I think it reads P codes/ emissions stuff but nothing like open or shorted circuits. More like no input from O2 sensor type thing.
    I've been thinking about the throttle body location. It's pretty low on the front of the car. Have you had hands on one of these?
     
  13. AllanC

    AllanC Well-Known Member

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    Does this mean you hear the fuel pump run while the starter is engaged and turning the crankshaft????
     
  14. bguy

    bguy Well-Known Member

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    No. It was very noisy at the school parking lot ( kind of like the 401 ) but when I got the Jeep home I can hear the fuel pump working as should. At the school I thought it was running constantly with the key in the run position.
     
  15. bguy

    bguy Well-Known Member

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    Think I'll pull the ground lug for the night.
     
  16. bguy

    bguy Well-Known Member

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    Battery lug trick didn't work.
    She's at the dealer now. I told him to call if it needs parts. Service writer said there's a wire that comes over the wheelwell that they are familiar with.
     
  17. bguy

    bguy Well-Known Member

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    Well it appears I was on the right track looking for a relay bank. There is/are relay(s) behind the LH wheelwell somewhere under the fuse bank. I'd expected it to be nearby. The tech removed the wheel and inner fender liner and found a relay with one terminal corroded completely off. So he "fixed" the wire and installed a new relay and put back all the covers and things I'd left off.
    Carrier rental $80.00
    Repairs $170.00
    Gas $30.00
    3/4 day off work .......

    Tag this one a solved. This is a common issue.
     
    #17 bguy, Mar 24, 2017
    Last edited: Mar 24, 2017
    chuzz, gforce2002 and Doug D like this.
  18. chuzz

    chuzz Well-Known Member

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    Well, thanks for letting us know what it was. It may help someone in the future with the same problem. Do they use a lot of salt on the roads where you are? I'm just wondering what caused the corrosion on a 6 year old vehicle.
     
  19. ImperialCrown

    Level III Supporter

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    I believe that this same electrical problem can also happen to the related architecture of the Caliber and Patriot. The 2007 Caliber that I drive has not exhibited a problem in this area yet, but I do want to take a look at it soon for peace-of-mind.
     
  20. nastijeep

    nastijeep Active Member

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    while this is very late, if u can, put a dab of die electric grease on relay terminals. may prevent corrosion. used this trick on bad turn signal on 200, it worked so I could return replacement turn signal. I did also disassemble old TS & grease contacts in there. cost of small tube dielectric was less than $4. as I recall, replacement TS was about $35.
     

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