Ambient temp sensor fault

[Wafu]

Addition to the second post.
Bumper off, took the new sensor off and check the resistance, checked the old sensor and the resistance is near to the new one, concluded that I have two serviceable sensors.
Checked for an earth from the plug wires, one has a good .002 resistance to earth, the other is show 01 on my multimeter. This would say I have good earth and a supply wire to the sensor.
Next step is to see what voltage I have to the plug from god know where in the van.

Does the sensor have a fuse? If so where is it please.
Does anyone have a wiring diagram for the sensor and any attached systems?

 

[Wafu]

I have the same fault as you guys, the temp went from normal to random -figures, all the way up to -42 degrees, then it gives just dashes on the indication.
I’ve changed the temp sensor behind the grille, and plugged in my Carista. Job done I thought, but once I’d cleared the fault and the engine management light on the dash, the temp shows -16.5 with no engine management light.

I checked the code on the Carista and found ‘Outside temperature sensor: resistance too high - B103F1B code.

Anyone had this before? If so, can you point me in the right direction?

To help me understand the system, does the temp sensor wiring go through the multi plug on the offside, the one you disconnect when taking off the bumper?

Vehicle details are a 2018 Caravelle, Executive.

 

[Bav]

Does anyone have a wiring diagram for the sensor and any attached systems?

If you upgrade your membership to VIP, you can access wiring diagrams from the downloads section.

 

[Wafu]

Check me out, I’m a VIP member