Outer Limits 4x4 Board

as above i am in need of the diagram showing ecu harness that controls the auto so as we can hard wire the surf box upto the 1uzfe

Have you tried the toyota surf forum?

http://www.toyotasurf.asn.au

Try the search function or post a thread. usually you'll get what you need from here.

Cheers,

Chris.

will try cheers

I looked everywhere for it and this is the best i could find. Cut and pasted from a finland site.




As there are no proper wiring diagrams for the 2L-TE engine, I’ll try to bring some light in this dark issue, for those who are interested...
My engine is off a ’91 LJ78 Prado with AT , the engine and the related ECU wiring is similar to LN130 2L-TEs.
I’ve got the ‘naked’ engine with the ECU and the pure engine wiring without AC and Transmission wiring. With the wiring harness on a table and fragments of several different wiring diagrams I have made up the following list. The LX90 diagram comes pretty close to the LJ/LN wiring although it differs in connector / pin numbers and wire colours. But it gives a very good overview of the ECU wiring.

The list shows the Pin number, Pin code, wire colour and location.



A connector

1 G-REL B-O Glow Relay
2 BAT W-L Fuse Box
3 TIL G Inst.Clust. (?)
4 ACT L (?)
5 SPD G-B Inst.Clust. (?)
6 G-IND R-W Glow Light
7 +BF B Glow Relay / Main Relay
8 +B B Spill Valve Relay
9 +BG B-R Ignition IG
10 IGSW B-R Ignition IG (joined with A9)
11 A/C B-R (?) propably Idle Up for A/C
12 TAC BR-R Inst.Clust.

B connector

1 W G-R Check Engine Light / Diag. Connector
2 free
3 S/TH1 G-W EGR VSV
4 S-REL B-R 2nd Glow Relay
5 M-REL G-O EFI Main Relay
6 free
7 OTS Y-G Water Temp. Sens.
8 TE1 L-W Diag. Connector
9 ECT V-R (?) Transmission
10 free
11 S/TH2 G EGR VSV
12 free
13 free
14 free
15 free
16 IDL Y-B Throttle Position Sensor

C connector

1 FSR B-L Spill Relay
2 EGR B-L EGR / VSV
3 THW R-L Water Temp Sensor
4 VRP G-B Injection Pump
5 PIM Y-L Pressure Sensor
6 VC L-R Throttle Position Sensor
7 TDC+ R Crank Position Sensor
8 NE+ R Pick Up Sensor
9 NSW B-W Neutral Start Switch
10 STA B-W Start Relay
11 SPV B Spill Valve
12 TCV B-O Timer Contr. Valve
13 Eo1 BR Ground
14 G B Glow Rail
15 E2 BR Sensors Ground
16 E2 BR Sensors Ground
17 VRT G-W Injection Pump
18 VTA W-L Throttle Position Sensor
19 THA Y Air Temp. Sensor
20 TDC- W Crank Position Sensor
21 NE- W Pick Up Sensor
22 free
23 free
24 E1 BR Ground Diag. Connector / Water Temp. Sensor
25 free
26 Eo2 BR Ground

Wire Colour Codes

B - Black
BR - Brown
G - Green
L - Blue
O - Orange
R - Red
V - Violet
W - White
Y - Yellow


The 'questionmarked' wires are cut on my harness, maybe someone knows where those wires go and what they do?



One thing still leaves me scratching my head... The Start Relay connects straight to the ECU (Pin C10, C9). Somehow I miss the connection to the ignition switch. My tiny little pic shows the actual configuration except the dotted lines. Is it possible to connect the ignition wire to ST2 and the NSW wire (I don't have a Neutral Start Switch) as drawn in the picture with the dotted lines? Or will I toast the ECU then? Where should I put fuses? Unfortunately the configuration is a bit different in the LX90 diagram...

surf box upto the 1uzfe

I'd hate to say it mate, but it's not worth the bother. I know a few people who have tried and failed. It's much easier to use the 1UZ auto with Surf transfer.

Surf box has 2 solenoids, 1U box has 4 solenoids and a few other differences.

I run the 1U auto and have never had any troubles with it.

From memory, you will run in to troubles with speed signal as well, as the ECU needs output shaft signal and not speed signal, as when your in low range, it wont change gears properly. You can get gizmo boxes to fix it (from Jaycar), but it's a pain.

Cheers.