Lexia shows temperature sensor fault, all the temperature gauge lights are on.

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My Name: C3driver52

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Posts: 2012
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 146 times
Been thanked: 78 times

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Ray62 wrote: Sun Oct 13, 2019 4:19 am Hi to all
Still have the same problems on the C3, temp lights all ON and fan not working even on A/C. When ing is turned OFF after a trip then On temp shows correct reading for a few seconds. Handbrake light I fixed it was a screw ( ground ) holding one of the sensors, which also cleared the e ngine light.
Temp sensor replaced and getting same results as before. Checked wiring for sensor and fan all Ok ,,,as best I could ..... fan has 5 wires so I guess it is co trolled by ECU . Does someone know where I can get a wiring manual or diagram so I can check voltages .

Thanks
Ray

Keepup the great work guys
The wiring diagrams are in the haynes manual (here) but you can't beat that by having lexia tool (here) for testing the electronics.
My Name: Ray62

Contributor
Posts: 11
Joined: Thu Feb 14, 2019 5:24 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 80000
Trim Level: SX
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Been thanked: 1 time

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Hi 3driver52
I ha e just recently bought lexia and diagbox but having issues with the installation due to issues that seller is not helping with.
I have replaced the temp sensor with luck and was thinking that could be coming from the fan not working, hence the need of the wiring manual.
I am also waiting for a soft copy of the workshop manual , will let you all know how I get on
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