1.2 tdi polo MAF sensor wiring

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CLN1.6TDI FK
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Car Make: VW Cross Polo
Car Model: Cross Polo Mk5 1.6 tdi 77Kw
Location: Eastern Cape

1.2 tdi polo MAF sensor wiring

Post by CLN1.6TDI FK »

Hi Guys
I need some assistance on a 4 pin maf wiring descriptions for a cfwa 1.2 tdi polo. The 4 pins are: Pin 1. Black/Yellow + 12V.
Pin 2. Green ? Is ecu connection T94/39
Pin 3. Violet wire ?
Pin 4. Black wire ? T94/18

Is Pin 2. Green the earth from ecu?
Is the Pin 3. Violet a signal earth and can it be earthed on chassis?
Is Pin 4. Black +5V from ecu.

I looked at the 3 pin maf on a 1.6 tdi, on it pin 1 is green ecu -12V earth, pin 2 black/Yellow +12V and pin 3 black +5V which changes as the rpm changes. Any one have these pinouts? My question then can I use the 4 pin instead of the 3 pin?
My Rides.
2008 9N3 Cross Polo 1.9 TDi
143kw 175kw :cool: on wheels.
2013 6R1 Cross Polo 1.6 TDi 77kw

Previous:
1995 Golf 3, 2.0l GTI Exec
1995 Jetta 3, 2.0l Exec
1990 Jetta 2, 1.8l CLX
1979 Golf 1, 1.6l GTS
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missioner
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Car Model: '87 MK1 Golf Citi

Re: 1.2 tdi polo MAF sensor wiring

Post by missioner »

CLN1.6TDI FK wrote:Hi Guys
I need some assistance on a 4 pin maf wiring descriptions for a cfwa 1.2 tdi polo. The 4 pins are: Pin 1. Black/Yellow + 12V.
Pin 2. Green ? Is ecu connection T94/39
Pin 3. Violet wire ?
Pin 4. Black wire ? T94/18

Is Pin 2. Green the earth from ecu?
Is the Pin 3. Violet a signal earth and can it be earthed on chassis?
Is Pin 4. Black +5V from ecu.

I looked at the 3 pin maf on a 1.6 tdi, on it pin 1 is green ecu -12V earth, pin 2 black/Yellow +12V and pin 3 black +5V which changes as the rpm changes. Any one have these pinouts? My question then can I use the 4 pin instead of the 3 pin?
That motor has a continental ECU and injectors

If the AFM originally fitted is a 4pin connector it will want the exact same thing again.

Anything else will either not work at all or throw error codes.

This is a vital part of the fuel metering system, don't try taking chances.
'87 Golf 1 Olde Skewl OEM+
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CLN1.6TDI FK
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Registered for: 2 years 9 months
Car Make: VW Cross Polo
Car Model: Cross Polo Mk5 1.6 tdi 77Kw
Location: Eastern Cape

Re: 1.2 tdi polo MAF sensor wiring

Post by CLN1.6TDI FK »

Thanks for the info, I have decided to get software done on the polo to sort out the bugs I encountered.
The original AFM is also a continental ( siemens ) 5WK97023 3 pin.
My Rides.
2008 9N3 Cross Polo 1.9 TDi
143kw 175kw :cool: on wheels.
2013 6R1 Cross Polo 1.6 TDi 77kw

Previous:
1995 Golf 3, 2.0l GTI Exec
1995 Jetta 3, 2.0l Exec
1990 Jetta 2, 1.8l CLX
1979 Golf 1, 1.6l GTS
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Sabretooth Tiger
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Re: 1.2 tdi polo MAF sensor wiring

Post by Sabretooth Tiger »

What year model is your Bluemotion? if you in Pretoria perhaps swing by Unique motorsport. They sorted me out when my ex Bluemotion had hickups.
Current:
2021 Polo Vivo 1.4 Trendline
2015 Dodge Journey 3.6 V6 R/T

Ex:
2014 VW Polo 1.2Tdi Bluemotion
2017 Tornado Red VW Jetta 1.6Tdi Comfortline DSG
2015 Dodge Journey 3.6 V6 R/T
2008 Hyundai Accent 1.6 3dr
2010 BMW 320d
2010 Mazda 3 2.0 Individual
1999 Nissan Sabre Gxi
2006 BMW 323i
2000 Opel Corsa Lite
2006 Ford Focus
1999 Nissan Sentra Gsi
1996 Toyota Conquest.
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CLN1.6TDI FK
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Registered for: 2 years 9 months
Car Make: VW Cross Polo
Car Model: Cross Polo Mk5 1.6 tdi 77Kw
Location: Eastern Cape

Re: 1.2 tdi polo MAF sensor wiring

Post by CLN1.6TDI FK »

Hey my polo is a 2013.
I am in East London, have called a few software guys this side for help.
I would still like to know.what the 4 wire colors are for. what are the voltages and can a signal earth be connected with chassis earth.
My Rides.
2008 9N3 Cross Polo 1.9 TDi
143kw 175kw :cool: on wheels.
2013 6R1 Cross Polo 1.6 TDi 77kw

Previous:
1995 Golf 3, 2.0l GTI Exec
1995 Jetta 3, 2.0l Exec
1990 Jetta 2, 1.8l CLX
1979 Golf 1, 1.6l GTS
HASANBASHA
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Re: 1.2 tdi polo MAF sensor wiring

Post by HASANBASHA »

Hi, just now I joined in this club. I am from Chennai, india. I have polo 1.5 TDI 2017 model, MAF sensor wire has been cut down by rats. It has three wires 1. Green with red, 2 gray with black and the 3rd one is black. I am looking for your assistance to fix this issue.
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CLN1.6TDI FK
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Car Make: VW Cross Polo
Car Model: Cross Polo Mk5 1.6 tdi 77Kw
Location: Eastern Cape

Re: 1.2 tdi polo MAF sensor wiring

Post by CLN1.6TDI FK »

@Hasanbasha
What is the engine number and make of the maf sensor?
My Rides.
2008 9N3 Cross Polo 1.9 TDi
143kw 175kw :cool: on wheels.
2013 6R1 Cross Polo 1.6 TDi 77kw

Previous:
1995 Golf 3, 2.0l GTI Exec
1995 Jetta 3, 2.0l Exec
1990 Jetta 2, 1.8l CLX
1979 Golf 1, 1.6l GTS
HASANBASHA
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Registered for: 2 years 2 months

Re: 1.2 tdi polo MAF sensor wiring

Post by HASANBASHA »

CLN1.6TDI FK wrote: Tue Jan 25, 2022 12:19 am @Hasanbasha
What is the engine number and make of the maf sensor?
Engine Number-CWX162631
I didn't find it's make. Continental ECU and injectors.
HASANBASHA
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Re: 1.2 tdi polo MAF sensor wiring

Post by HASANBASHA »

HASANBASHA wrote: Tue Jan 25, 2022 12:10 pm
CLN1.6TDI FK wrote: Tue Jan 25, 2022 12:19 am @Hasanbasha
What is the engine number and make of the maf sensor?
Engine Number-CWX162631
I couldn't find it's make. Part Number mentioned as 04L 906 461 B. Continental ECU and injectors.
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CLN1.6TDI FK
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Posts: 30
Registered for: 2 years 9 months
Car Make: VW Cross Polo
Car Model: Cross Polo Mk5 1.6 tdi 77Kw
Location: Eastern Cape

Re: 1.2 tdi polo MAF sensor wiring

Post by CLN1.6TDI FK »

Hasanbasha

Will you be able to send me a picture of the maf the connector and wires.

On all the info the you give show a 4 pin maf sensor on number 04L906461B.
My Rides.
2008 9N3 Cross Polo 1.9 TDi
143kw 175kw :cool: on wheels.
2013 6R1 Cross Polo 1.6 TDi 77kw

Previous:
1995 Golf 3, 2.0l GTI Exec
1995 Jetta 3, 2.0l Exec
1990 Jetta 2, 1.8l CLX
1979 Golf 1, 1.6l GTS
User avatar
CLN1.6TDI FK
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Posts: 30
Registered for: 2 years 9 months
Car Make: VW Cross Polo
Car Model: Cross Polo Mk5 1.6 tdi 77Kw
Location: Eastern Cape

Re: 1.2 tdi polo MAF sensor wiring

Post by CLN1.6TDI FK »

@Hasanbasha
I have a wiring diagram that can help you but will have to email you with it. Maf sensor is page 7 on the link.
Or try this full link:

https://www.kolhosniki.ru/elsaonline&ve ... m#id500007
My Rides.
2008 9N3 Cross Polo 1.9 TDi
143kw 175kw :cool: on wheels.
2013 6R1 Cross Polo 1.6 TDi 77kw

Previous:
1995 Golf 3, 2.0l GTI Exec
1995 Jetta 3, 2.0l Exec
1990 Jetta 2, 1.8l CLX
1979 Golf 1, 1.6l GTS
HASANBASHA
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Posts: 5
Registered for: 2 years 2 months

Re: 1.2 tdi polo MAF sensor wiring

Post by HASANBASHA »

CLN1.6TDI FK wrote: Wed Jan 26, 2022 12:16 am @Hasanbasha
I have a wiring diagram that can help you but will have to email you with it. Maf sensor is page 7 on the link.
Or try this full link:

https://www.kolhosniki.ru/elsaonline&ve ... m#id500007
Thank you so much for your help. I will check and also send the pictures to you through email. Thank you.
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CLN1.6TDI FK
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Posts: 30
Registered for: 2 years 9 months
Car Make: VW Cross Polo
Car Model: Cross Polo Mk5 1.6 tdi 77Kw
Location: Eastern Cape

Re: 1.2 tdi polo MAF sensor wiring

Post by CLN1.6TDI FK »

@Hasanbasha

I recieved your email.
Please first use the drawing for maf sensor G70 trace thewires back to the ecu pin connections and check if it is connected correct.
Pin1 is ecu negative to maf.
Pin2 is 12 volt from positive harness to sensor.
Pin 3 black wire is 5 volt signal wire.

If this is correct you can have a few things to check on maf, maf might be dirty or damaged.
My Rides.
2008 9N3 Cross Polo 1.9 TDi
143kw 175kw :cool: on wheels.
2013 6R1 Cross Polo 1.6 TDi 77kw

Previous:
1995 Golf 3, 2.0l GTI Exec
1995 Jetta 3, 2.0l Exec
1990 Jetta 2, 1.8l CLX
1979 Golf 1, 1.6l GTS
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