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Ambient Air Temperature Sensor Code P0070


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2012 Journey. Temp display is -40. Sensor has been changed. Code is P0070. Mechanic said it appears to be a broken wire. Can't get 5 volts at the sensor. Looking for a wiring diagram so I can try and chase down the broken wire. I know the sensor harness goes behind the driver side headlight area, but not having any luck trying to chase it from there. Thanks. If this is the wrong subforum, feel free to move it.

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17 minutes ago, Dean H said:

2016 DJ service CD 

IMG_20241211_131359.thumb.jpg.ae0beebdb11af7d9d8e2e4a1d4f3817a.jpg

 

IMG_20241211_130528.thumb.jpg.751ca647fbd242f34fb4e583ed962d37.jpg

 

The connector the circuit goes to, is the one at the end of the white line.

Inline front end module connector.

 

IMG_20241211_133749.thumb.jpg.da1c7aee7c9109a1a8bb608cdc789b0f.jpg

So this connector is basically behind the headlight assembly, is that correct and in the other photo the actual BCM appears to be inside the car behind the glovebox?

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On 12/11/2024 at 7:16 PM, MarkyB said:

Thanks, I'll get on this this weekend.

Sorry to bother, I can't separate the plug. Found the Red release on the bottom side, but nothing I do works. Looks like a grey disk with a lever on the bottom side, but it's not moving either.

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Your going to remove the complete sensor from the front clip first. Then try to separate the connector.

 

It is held in by a push in trim thing.

 

Using trim removal tool with the slot in it will help 

 

While pulling it away from the front clip. Pull on the the left side then right side. Going back and forth. Go easy.

 

The connector is going to be a royal pain in the -beep-

IMG_20240507_191500.thumb.jpg.8ef4be6c7975edd291f090c9cf49e2ef.jpg

 

 

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On 12/11/2024 at 7:15 PM, Dean H said:

Connector, yes. Easy access -

IMG_20241211_1342192.thumb.jpg.87e3e7de222f195c94cce15e1e0c5929.jpg

 

BMC to the right of the glove box. 

Dean, This is the plug I can't separate. I'm trying to test continuity between the sensor and this point first. I pulled the glovebox and looked at the BCM, that is no bueno for me.

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  The red clip has to pulled down to release the wire harness.

 

Can you tell me the code 

title for P0070?

 

So I can look it up.

 

 

 

Edited by Dean H
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2 hours ago, Dean H said:

  The red clip has to pulled down to release the wire harness.

 

Can you tell me the code 

title for P0070?

 

So I can look it up.

 

 

 

For whatever reason, your last comment about checking the 5V is not in the thread. I have and he also have removed the sensor. I also have 2 additional sensors. All have been checked with a multimeter and tested in hot and cold water. If I take a volt meter from either wire to ground, neither will give me 5 volts.

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