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Old 05-06-2013, 05:38 AM   #1 (permalink)
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VAG diesil mpg display

Hi,

I'm new to this forum, been looking around for a while. Brilliant site.

I have a 1999 Ford Galaxy, with a 1.9tdi VW engine, unfortunately it does not run OBDII instead it run VAG's own software. Is there any way of getting a display similar to a scangauge for my car? Or has anyone made one before?

Thanks
Andy

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Old 05-06-2013, 07:35 AM   #2 (permalink)
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Hi Andy!

First of all welcome to the forum!
Regarding your question. As far as I know VAG ECUs have pin fir FE display and you can connect MPGuino to it as I did in Berta. And you can connect Scan Gauge or UltraGauge as well using OBDII port. FORD OBD
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Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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Old 05-06-2013, 07:43 AM   #3 (permalink)
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I've found some more info on MFA
Quote:
Additional ECU pin out info:

1.9TDI 68-Pin ECU Pinout (p/ns: 028 906 02X xx)

Copied from a 1997 Golf TDI diagram – note: all pins are included below, but not necessarily used


Pin Color Module des Description Connected to
1 BR 31 Ground connection in wiring harness 31 (156)
2 SW/GN J285 Engine Speed Signal (tachometer/DOP) G1/12 U1/6 T28/10
3 N/C
4 BR/GE N146 Metering Adjuster F26 T8/6
5 BR/GE N146 Metering Adjuster F26 T8/6
6 SW/BL J359 Low Heat Output Relay 1
7 GR/GN G149 Modulating Piston Displacement Sensor T 8/5
8 WS G28 Engine Speed Sensor 3/2
9 LI/WS MFA Fuel Consumption Signal (For Multifunction Display)
10 N/C
11 BL G80 Needle Lift Sensor 2/2
12 GR G80 Needle Lift Sensor 2/1
13 BR/RO G70 Mass Air Flow (MAF) Sensor 6/6
14 BL/BR G62 Engine Temperature Sensor T24/20 4/3
15 WS/BL G79 Throttle Position Sensor T6/1
16 BL/SW F22 0.3 Bar Oil Pressure Switch T24/1
17 WS/RO F36 Clutch Switch Pin 2 Clutch Switch
18 GE/RO Auto Gearbox T8a/4
19 RO/GN G70 Mass Air Flow (MAF) Sensor 6/1
20 WS/GE F47 Brake Pedal Switch Pin1 Brake Switch
21 N/C
22 N/C
23 SW/GE J317 Power Supply Relay F25 G 1/10
24 BR 31 Ground connection in wiring harness 156 31
25 BR/WS N18 EGR Vacuum Regulator Solendoid Valve 2/2
26 SW/BR J360 High Heat Output Relay 3
27 N/C
28 BR/GR J246 AC Relay Coupling N/2
29 LI/SW G149 Modulating Piston Displacement Sensor T8/1
30 GR/WS J52 Glow Plug Relay T10/7
31 BL/GE Auto Gearbox T8a/7
32 GR Auto Gearbox T8a/6
33 BR/BL 31 Ground connection (sensor ground) 220 31
34 BL/GR E45 Cruise Control Switch T4/2
35 RO E45 Cruise Control Switch T4/3
36 N/C
37 GN/GR F38 AC Ambient Temperature Switch
38 BLK 15 12V ignition G1/4 15
39 RO/SW 31 Alternator T2/1 31
40 N/C
41 N/C
42 SW/LI J317 ECU Switched Ground for 109 Relay 85 G1/7
43 BL/WS VSS Vehicle Speed Signal wire (VSS) TV13 W/1 U2/2 T28/7
44 SW/RO M9 Left Brake Light TV11 W/4 K/4 E/3
45 SW/GE J317 Power Supply Relay F25 G1/10 6/87
46 BR 156 Ground connection 156 31
47 RO/BL N75 Wastegate Bypass Regulator Valve 2/1
48 BL/GN K29 Glow Plug Indicator Light G 2/5
49 BR/GE N146 Metering Adjuster F26 T8/6
50 GE/BL J52 Glow Plug Relay G1/3 3/85
51 BR/SW N108 Cold Start Injector T24/13 T3/2
52 WS/GN G149 Modulating Piston Displacement Sensor T8/3
53 WS/SW N109 Fuel Cut Off Valve T24/12 T3/1
54 N/C
55 GR/RO G79 Throttle Position Sensor T6/3
56 N/C
57 GE/GN G79 Throttle Position Sensor T6/2
58 N/C
59 BL/SW Auto Gearbox T10/8
60 GE/WS K83 Malfunction Light (US only) 1/1
61 GR/WS OBD Immo Box 1995-> vehicles or OBD II connector (pre 1995 vehicles) OBD T16/7
62 GN/WS G79 Throttle Position Sensor T6/5
63 GE/SW G81 Fuel Temperature Sender T8/7
64 BL/GE G72 Intake Manifold Temperature Sender 2/1
65 GR/BL G79 Throttle Position Sensor T6/4
66 SW/WS E45 Cruise Control Switch T4/4
67 N/C
68 SW/GE J317 109' Sensor Supply Relay F25 G1/10 6/87
Pin #9 gives signal to MFA and I've used it to feed FE signal to MPGuino. And it's working flawlesly
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Quote:
Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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Old 05-06-2013, 12:14 PM   #4 (permalink)
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The tdi's do run OBDII you might have just not connected when doing your conversion.
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Old 05-06-2013, 04:50 PM   #5 (permalink)
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Thanks for the information hopefully i can come up with something from that,

The Ford Galaxy came fitted with the VW tdi as the car was a joint venture with VW, so its not a conversion, and in the uk they didn't force makers to run OBDII till alot later, something like 2006 IIRC.

Now all i need to do is read up on how to make one of these MPGuino and program it. Should be fun

Andy
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Old 05-06-2013, 05:10 PM   #6 (permalink)
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Just make sure that you have correct ECU number and pinouts before you'll connect anything.
If you'll need any info on MPGuino I have some experience so feel free to contact me.
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Quote:
Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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Old 05-06-2013, 05:18 PM   #7 (permalink)
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Thanks very much,

I've been doing some research on the instruments for my car and found i should be able to retro fit the mpg display into my car and I know with VAGcom you can adjust MPG it displays by percentage to correct it to show the real MPG, so when i get some time i will have a look to see if all the wiring is there to make it all work

Andy
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Old 05-07-2013, 04:26 AM   #8 (permalink)
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Charlie - '07 Citroen C4 Grand Picasso Exclusive
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Corsa - '05 Opel Corsa C
90 day: 53.22 mpg (US)
Thanks: 185
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I had the same situation with Berta, because BMW provides OBC (On Board Computer) which shows you many data from the car like average speed, range, fuel consumption etc. But I've decided to use MPGuino. Why? It's simple - I'm a DIY person and I love the open source project that i can change on my own. I can add any code I like to it and get new features in a matter of minutes, hours, days. And after putting Guino into an instrument cluster it just more convinient to use it without looking away from the windscreen to the usual place where OBC is installed.

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Quote:
Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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