3S-GTE ECU Label

This version of the MR2 ECU contains 3 processors. In previous versions the fuelling, idle, ignition and boost control were handled in just one processor, with another processor handling knock control. In this version the functions have been split over 3 processors:

D151803-9651
The main processor, most major inputs and outputs are connected to this processor. Probably responsible for ignition and boost control and driving the ignition and injectors.
D151803-9661
Probably responsible for fuelling and idle control, but it doesn't seem to drive the injectors directly. The processor has code to determine camshaft position, presumably to control the sequential fuel injection.
D151804-1010
Unknown, probably handles knock control and knock sensor filtering.

Other interesting components:

TODO: ADCs

TODO: Add some nice photos of PCB with major components highlighted.

ECU Pinout

E01

#10 (#1)

#20 (#2)

RSO

RSC

HT

EVP

G2

NE

IGF

TPC

VF

VTA2

OX

THW

THA

PIM

VC

STA

AC

SPD

PSCT

VTO1

ECO

W

STP

EGW

ELS

BATT

E02

#30 (#3)

#40 (#4)

VISC

FAN

NEO

IGT

IDL2

G1

G-

TR2

E1

FPR

TE1

TE2

KNK

IDL1

VTA1

THAM

E2

TR1

ACT

ABS

CF

PS

CCO

VTO2

FC

+B1

+B

TODO: Add connector pinout.