Hi all i hope you are all keeping well,
I'm trying to check my wiring on my exhaust gas temperature sensor back to the ECU,
My chassie number is VF3**************[VIN obfuscated, can be read by forum staff]
I will be totally honest I'm just a diyer on cars and I can obviously see the cable colours at the exhaust gas temperature sensor but I've no idea how to read a wiring diagram to see/know what pin numbers they are at the ECU end.
Any help would be very much appreciated thanks
Exhaust temp sensor wiring
Moderator: RichardW
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- (Donor 2021)
- Posts: 62
- Joined: 14 Jul 2020, 16:27
- Location: Romford Essex uk
- My Cars: Peugeot 207 2011
1.4 hdi 78,000 miles - x 1
-
- (Donor 2021)
- Posts: 62
- Joined: 14 Jul 2020, 16:27
- Location: Romford Essex uk
- My Cars: Peugeot 207 2011
1.4 hdi 78,000 miles - x 1
Re: Exhaust temp sensor wiring
I have located these wiring diagrams....
Am i right in saying they conect to pins B19 and B20
On the ecu?
Thanks for your help
Am i right in saying they conect to pins B19 and B20
On the ecu?
Thanks for your help
- GiveMeABreak
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Re: Exhaust temp sensor wiring
They do: (PS - I deleted your other post on this same subject as it asked the same question, to avoid duplication of answers).
Wire 1268A: exhaust gas temperature sensor downstream of the catalytic converter A: signal is Pin (1) on the Upstream Exhaust Gas High Temp Sensor (UEGHTS)
Wire 1433A: pre-catalyst downstream exhaust temperature sensor earth A: signal is Pin (2) on the (UEGHTS)
These go to the 53 Pin Brown connection plug on the engine ECU:
1268A = Pin (20) on ECU
1433A = Pin (19) on ECU
Wire 1268A: exhaust gas temperature sensor downstream of the catalytic converter A: signal is Pin (1) on the Upstream Exhaust Gas High Temp Sensor (UEGHTS)
Wire 1433A: pre-catalyst downstream exhaust temperature sensor earth A: signal is Pin (2) on the (UEGHTS)
These go to the 53 Pin Brown connection plug on the engine ECU:
1268A = Pin (20) on ECU
1433A = Pin (19) on ECU
Please Don't PM Me For Technical Help
Marc
Marc
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- (Donor 2021)
- Posts: 62
- Joined: 14 Jul 2020, 16:27
- Location: Romford Essex uk
- My Cars: Peugeot 207 2011
1.4 hdi 78,000 miles - x 1
Re: Exhaust temp sensor wiring
Thanks Marc that's much appreciated i will take a look and report back
Thanks again
Thanks again
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- (Donor 2021)
- Posts: 62
- Joined: 14 Jul 2020, 16:27
- Location: Romford Essex uk
- My Cars: Peugeot 207 2011
1.4 hdi 78,000 miles - x 1
Re: Exhaust temp sensor wiring
Well checked the wires back to the ECU plug and all ok, so not sure what to check now
Thanks all
Thanks all
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- (Donor 2021)
- Posts: 62
- Joined: 14 Jul 2020, 16:27
- Location: Romford Essex uk
- My Cars: Peugeot 207 2011
1.4 hdi 78,000 miles - x 1
Re: Exhaust temp sensor wiring
Took some readings of the exhaust gas temperature sensor today on the bench
- GiveMeABreak
- Forum Admin Team
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- Joined: 15 Sep 2015, 19:38
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- My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow - x 5723
Re: Exhaust temp sensor wiring
Ok, so just to rewind a bit, you never actually stated what the issue was, but just asked for the wiring info, which has helped you do your checks I see, but I'm not sure what the fault is to start with.
If you can provide some more information and some fault codes for the specific issue, maybe we can chip in.
If you can provide some more information and some fault codes for the specific issue, maybe we can chip in.
Please Don't PM Me For Technical Help
Marc
Marc
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- (Donor 2021)
- Posts: 62
- Joined: 14 Jul 2020, 16:27
- Location: Romford Essex uk
- My Cars: Peugeot 207 2011
1.4 hdi 78,000 miles - x 1
Re: Exhaust temp sensor wiring
GiveMeABreak wrote: ↑04 Apr 2022, 12:46 Ok, so just to rewind a bit, you never actually stated what the issue was, but just asked for the wiring info, which has helped you do your checks I see, but I'm not sure what the fault is to start with.
If you can provide some more information and some fault codes for the specific issue, maybe we can chip in.
Sorry Marc
The car is running absolutely fine and no fault codes or warning lights on the dash what so ever, and is doing regenerations every 220miles,
Previously my dpf was blocked and while i was trying to get information on that issue it was pointed out to me that my exhaust gas temperature sensor was reading 149°c constantly... with a live scan showing this, it's been suggested that my car may be chipped but as far as I'm aware its not as the dpf is all still in place as ive just recently removed it and cleaned it.
And since putting it back together the cars been fine, but live data still showing a constant 149°c
Many thanks Simon
- GiveMeABreak
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- Joined: 15 Sep 2015, 19:38
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C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow - x 5723
Re: Exhaust temp sensor wiring
Ok Simon, this may help with the readings:
The gas temperature sensor upstream of the particle filter informs the engine ECU of the temperature of the exhaust gases.
The NTC (Negative Temperature Coefficient) resistance value "R" changes in relation to the change in the temperature "T":
The gas temperature sensor upstream of the particle filter informs the engine ECU of the temperature of the exhaust gases.
The NTC (Negative Temperature Coefficient) resistance value "R" changes in relation to the change in the temperature "T":
- When the temperature "T" increases, the resistance value "R" decreases
- When the temperature "T" decreases, the resistance value "R" increases
Minimum value (°C) | Temperature (°C) | Maximum value (°C) | Resistance R (In Kohms ) |
-50 | -40 | -30 | 133,8 |
-20 | -10 | 0 | 46,76 |
-10 | 0 | 10 | 34,49 |
10 | 20 | 30 | 19,86 |
40 | 50 | 60 | 9,748 |
90 | 100 | 110 | 3,770 |
140 | 150 | 160 | 1,802 |
190 | 200 | 210 | 1,001 |
240 | 250 | 260 | 0,616 |
290 | 300 | 310 | 0,412 |
340 | 350 | 360 | 0,293 |
390 | 400 | 410 | 0,218 |
440 | 450 | 460 | 0,168 |
490 | 500 | 510 | 0,134 |
540 | 550 | 560 | 0,109 |
590 | 600 | 610 | 0,090 |
640 | 650 | 660 | 0,076 |
690 | 700 | 710 | 0,065 |
740 | 750 | 760 | 0,056 |
790 | 800 | 810 | 0,049 |
840 | 850 | 860 | 0,043 |
Please Don't PM Me For Technical Help
Marc
Marc
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- (Donor 2021)
- Posts: 62
- Joined: 14 Jul 2020, 16:27
- Location: Romford Essex uk
- My Cars: Peugeot 207 2011
1.4 hdi 78,000 miles - x 1
Re: Exhaust temp sensor wiring
Thanks for that Marc,
Something is not 100% then as it reads 149°c constantly on my pp2000/diagbox even when it's doing a regeneration, and the same 149°c on my mates snap-on scanner thinking mine may be reading it wrong...
Thanks simon
Something is not 100% then as it reads 149°c constantly on my pp2000/diagbox even when it's doing a regeneration, and the same 149°c on my mates snap-on scanner thinking mine may be reading it wrong...
Thanks simon