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Hood ajar warning after replacing front blinkers


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5 replies to this topic

#1 OFFLINE   jjd

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Posted 13 June 2018 - 08:45 PM

I had to replace a front blinker bulbs last weekend and I thought I had done everything correct except I'm now getting a hood ajar warning.

I've checked the hood and latches and everything seems correct so I suspect I accidetly dislodged a quick connect harness for the latch sensor and can't figure out where that would be.

I had disconnected each of the light house wiring harnesses and a two-pin connector under the right light housing attached to the frame which I believe is for the fog lights and thought all three were reconnected. All lights are working.

Where would the hood open sensor be located? Is there a quick connect for that sensor which I may have accidently disconnected?
 
Thanks for any help








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#2 OFFLINE   murphy

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Posted 14 June 2018 - 05:05 AM

The hood has two latches and presumably has two sensors.  Verify that both latches are secured.



#3 OFFLINE   jjd

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Posted 14 June 2018 - 06:57 AM

Yup I know the two latches, and did check them for any sort of switch sensor. Check both latches weren't stuck open and found that both looked to be working correctly (and hood is down tight). Pressing on the closed hood doesn't seem to remove the warning. I couldn't see any sort of wiring on/near the latches. I can't find those switches.

 

Any idea where these hood sensor switches are mounted? (pictures?)  Most of the car door sensor switches I've seen are placed somewhere else in the door frame and woudn't be surprised to find the same with the hood. Just don't know what these would look like or where to look. 



#4 OFFLINE   murphy

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Posted 14 June 2018 - 08:22 AM

Yup I know the two latches, and did check them for any sort of switch sensor. Check both latches weren't stuck open and found that both looked to be working correctly (and hood is down tight). Pressing on the closed hood doesn't seem to remove the warning. I couldn't see any sort of wiring on/near the latches. I can't find those switches.

 

Any idea where these hood sensor switches are mounted? (pictures?)  Most of the car door sensor switches I've seen are placed somewhere else in the door frame and woudn't be surprised to find the same with the hood. Just don't know what these would look like or where to look. 

There is a gray connector at the lower left of the driver's side latch.  It appears to be wired to a microswitch located directly above it.

 

Make sure the hood release lever is fully retracted.  If it isn't completely retracted it might affect the microswitch.



#5 OFFLINE   hikyuuri

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Posted 14 December 2018 - 02:05 PM

Old thread, but wanted to add my notes to it.

 

There is also two connectors on either side of the Driver Side headlight assembly.  These connectors are not accessible without removing the front bumper cover.  This is the "sense" wire for detecting if the hood is open or not.  If the circuit is "open", the car counts that as the hood is open.

 

If one or both of these connectors are not connected, or not connected securely, then the car will read that as the hood being open, even if it is fully latched.

 

Source: When replacing my headlights with LEDs, I forgot to attach this cable.  I didn't even notice until I went to turn the car on and it said the hood was opened.  After ripping the front bumper cover off, I realized I left these disconnected.  Connecting them fixed the issue.



#6 OFFLINE   jjd

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Posted 14 December 2018 - 11:46 PM

Thanks for the note, reminded me I forgot to follow up. Turned out the switch was fine. My problem was the wiring harness which is on the attached to the trunk side of the driver's wheel well wall. This could also only be reached with the bumper cover removed. Next time I'll check everything before putting the front end back on!






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