Author Topic: ECU wire identification  (Read 17603 times)

Offline jonrandom

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ECU wire identification
« on: 11 January 2012, 21:32 »
Ive never done anything like this before so need some help, I know how to splice the wires but I dont understand how to workout which wire is which. I need the rpm signal and the throttle postion sensor. From the wiring diagram I think thats TS sensor B147 and the rpm B33??



VW AGU WIRING COLOURS

 

NO:30# is battery +: (which is the 12v constantly fed from the fuse box )
NO:15# is ignition switch-ignition on: remains on when cranking (power required at coil during starting and running)
X#X# supplies power to the lights etc with the key on, but off when cranking, i.e. when cranking power is cut to the lights, allowing more current to be supplied to the starter.

Working from left to right top to bottom

K46: Engine control relay
F32: FUSE
F34: FUSE
F5: FUSE
F13: FUSE
F10: FUSE
F7: FUSE
F2: FUSE
F29:FUSE
T1: I COIL CYL 1
T1: II COIL CYL 2
T1: III COIL CYL 3
T1: IIII COIL CYL 4

F28: FUSE
F43: FUSE
X1: DATA LINK CONNECTOR (DLC)
Y3: I FUEL INJECTOR CYL 1
Y3: II FUEL INJECTOR CYL 2
Y3: III FUEL INJECTOR CYL 3
Y3: IIII FUEL INJECTOR CYL 4
Y68: TURBOCHARGER (TC) WASTEGATE REGULATING VALVE
A63: AIR CON MODULE (NA)
S292: AS ABOVE (NA)
A95: AS ABOVE (NA)
A163: AS ABOVE (NA)
S258: CLUTCH PEDAL POSITION (NA)
S101: CRUISE CONTROL PEDAL SWITCH (NA)
S79: CRUISE CONTROL MASTER SWITCH (NA)
A5: INSTRUMENT PANEL
A75: INSTRUMENT CONTROL MODULE
A162: IMMOBILIZER MODULE
B33: VEHICLE SPEED SENSOR (VSS)
A52: IGNITION AMPLIFIER
A35: ENGINE CONTROL MODULE (ECM) AKA ECU
M12: FUEL PUMP (HIGH PRESSURE)
Y104: (EVAP) EVAPORATIVE EMISSION CANISTER PURGE VALVE
B30: MASS AIR FLOW SENSOR ( MAF)
B72: HEATED OXYGEN SENSOR (HO2S)
B26: INTAKE AIR TEMPERATURE SENSOR (IAT)
B54: CRANKSHAFT POSITION SENSOR (CKP)
B69: I KNOCK SENSOR 1 TIMING SIDE (KS1)
B69: II KNOCK SENSOR 2 FLYWHEEL SIDE (KS2)
A177: THROTTLE CONTROL UNIT (THROTTLE BODY)
Y56: IDLE SPEED CONTROL ACTUATOR (ISC)
S57: CLOSED THROTTLE POSITION SWITCH (CTP)
B147: THROTTLE POSITION SENSOR (TP)
B151: IDLE SPEED CONTROL ACTUATOR POSITION SENSOR (ISC)
B121: BAROMETRIC PRESSURE SENSOR (BARO)
B132: CAMSHAFT POSITION SENSOR (CMP)
B24: ENGINE COOLANT TEMPERATURE SENSOR (ECT)
S231: POWER STEERING PRESSURE SWITCH (PSP)

A16: (N/A)
#31: BATTERY NEG -


So how do I work out which wires which from this by the ecu?



Any help would be really appreciated on how you work this out.

Cheers Jon

Offline topher

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Re: ECU wire identification
« Reply #1 on: 11 January 2012, 21:39 »
look closely at the ecu plug the pins are numbered in the corners

B33 is the sender on the gearbox for the speedo, not an rpm signal.

Offline jonrandom

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Re: ECU wire identification
« Reply #2 on: 11 January 2012, 22:15 »
Arh, nice one that makes sense I missed that. So which is the rpm then?

Another thought this is for my electronic boost controller so what are the wires going into the N75, would they be the rpm and TS?

Offline Chris.

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Re: ECU wire identification
« Reply #3 on: 12 January 2012, 18:40 »
I had this worked out for mate when he was going to 1.8T his clio with a AGU

It goes through the 3 plugs in plenum chamber under wipers

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Offline Chris.

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Re: ECU wire identification
« Reply #4 on: 12 January 2012, 18:56 »
Pin 6 - Green/Brown  To A75/A162 in autodata (instrument control panel and Immobiliser module)


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Offline Chris.

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Re: ECU wire identification
« Reply #5 on: 12 January 2012, 19:00 »
Pin 62 is your throttle position sensor, but you should need to touch this if putting into a new car?

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Offline jonrandom

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Re: ECU wire identification
« Reply #6 on: 12 January 2012, 21:17 »
Thank you so much chris just what I needed!!

Im just following what the wiring diagram says for the hks evc 6, one wire for the rpm and the other for the throttle position sensor.

but you should need to touch this if putting into a new car?

What do you mean mate?

Offline Chris.

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Re: ECU wire identification
« Reply #7 on: 12 January 2012, 21:35 »
In thinking your doing a engine conversion.....hence the caddy 1.8T on the pic lol

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Offline jonrandom

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Re: ECU wire identification
« Reply #8 on: 12 January 2012, 22:11 »
Oh right lol, no its staying in a golf it was the only wiring diagram I could find of a agu code!

Offline Gloves88

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Re: ECU wire identification
« Reply #9 on: 12 January 2012, 22:30 »
Sorry to hijack the thread but I'm having the same problems identiying ECU pins on an AUM.

Anyone know where I could find this info?

Chris, what program is that you're using?

Thanks