ECU / loom pinout
1986 1G-GTEU ECU pinout
1986 1G-GTEU engine control ECU connector layout with S, T and U plugs. Visible terminal functions and visible wire colours from the supplied diagram have been entered as a starter pinout. Some unclear or variant-dependent cavities remain editable.
Real-life connector overview
TSRM wire color codes
First letter = basic wire color. Second code = stripe color. Example: L-Y means blue wire with yellow stripe.
BBlack
BRBrown
GGreen
GRGray
LBlue
LGLight Green
OOrange
PPink
RRed
VViolet
WWhite
YYellow
Source ECU / loom
Compact overview only. Blank gaps are real connector spaces. Click a connector to show the larger detailed view below. Use the view-side button to mirror the connectors between ECU side and connector/loom side.
S — S connector - yellow, 24-number shell
Connector face view as shown in the diagram. Top row 1-12. Bottom row 13-24.
T — T connector - yellow, 18-number shell
Connector face view as shown in the diagram. Top row 1-9. Bottom row 10-18.
U — U connector - yellow, 10-number shell
Connector face view as shown in the diagram. Top row 1-5. Bottom row 6-10.
Detailed connector view
Source connectors one by one
S — S connector - yellow, 24-number shell
Connector face view as shown in the diagram. Top row 1-12. Bottom row 13-24.
Pin list for S — S connector - yellow, 24-number shell
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#1
cell 1,1
|
M-REL | output |
EFI main relay EFI main relay |
B-OBlack with Orange stripe | — |
|
#2
cell 1,2
|
BATT | power |
Battery constant power Battery constant power |
B-YBlack with Yellow stripe | — |
|
#3
cell 1,3
|
VC | input |
Sensor reference voltage Sensor reference voltage |
L-HBlue with H stripe | — |
|
#4
cell 1,4
|
VSA | input |
Air flow meter signal Air flow meter signal |
LG-BLight Green with Black stripe | — |
|
#5
cell 1,5
|
THA | input |
Air temperature sensor Air temperature sensor |
LGLight Green | — |
|
#6
cell 1,6
|
FP | output |
Fuel pump relay / control Fuel pump relay / control |
YYellow | — |
|
#7
cell 1,7
|
SPD | input |
Speedometer signal Speedometer signal |
PPink | — |
|
#8
cell 1,8
|
ISC2 | output |
Idle speed control coil 2 Idle speed control coil 2 |
G-WGreen with White stripe | — |
|
#9
cell 1,9
|
TIL | output |
Turbo indicator lamp Turbo indicator lamp |
P-GPink with Green stripe | — |
|
#10
cell 1,10
|
IG | power |
Ignition switch power Ignition switch power |
B-OBlack with Orange stripe | — |
|
#
cell 1,11
|
No label | — | — |
— |
— |
|
#12
cell 1,12
|
OX | input |
Oxygen sensor Oxygen sensor |
HH | — |
|
#13
cell 2,1
|
+B1 | power |
EFI main relay power EFI main relay power |
B-RBlack with Red stripe | — |
|
#14
cell 2,2
|
+B | power |
EFI main relay power EFI main relay power |
B-RBlack with Red stripe | — |
|
#15
cell 2,3
|
CCO | output |
A/C or idle-up control output A/C or idle-up control output |
G-BGreen with Black stripe | — |
|
#16
cell 2,4
|
KNK2 | input |
Knock sensor 2 Knock sensor 2 |
WWhite | — |
|
#17
cell 2,5
|
KNK1 | input |
Knock sensor 1 Knock sensor 1 |
WWhite | — |
|
#18
cell 2,6
|
EGH | output |
Exhaust gas / warning lamp signal Exhaust gas / warning lamp signal |
Y-LYellow with Blue stripe | — |
|
#19
cell 2,7
|
STP | output |
Stop lamp switch Stop lamp switch |
GR-GGray with Green stripe | — |
|
#20
cell 2,8
|
A/C | output |
A/C magnet switch A/C magnet switch |
L-RBlue with Red stripe | — |
|
#21
cell 2,9
|
HT | input |
Turbo pressure / exhaust temperature related signal Turbo pressure / exhaust temperature related signal |
R-GRed with Green stripe | — |
|
#22
cell 2,10
|
E22 | ground |
Sensor ground Sensor ground |
BRBrown | — |
|
#23
cell 2,11
|
E11 | ground |
ECU ground ECU ground |
BRBrown | — |
|
#
cell 2,12
|
No label | — | — |
— |
— |
T — T connector - yellow, 18-number shell
Connector face view as shown in the diagram. Top row 1-9. Bottom row 10-18.
Pin list for T — T connector - yellow, 18-number shell
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#1
cell 1,1
|
THW | input |
Water temperature sensor Water temperature sensor |
GGreen | — |
|
#2
cell 1,2
|
IGF1 | input |
Igniter feedback 1 Igniter feedback 1 |
R-LRed with Blue stripe | — |
|
#3
cell 1,3
|
ACC1 | input |
Throttle position sensor sub-signal 1 Throttle position sensor sub-signal 1 |
Y-BYellow with Black stripe | — |
|
#4
cell 1,4
|
NE | input |
Distributor NE signal Distributor NE signal |
LBlue | — |
|
#5
cell 1,5
|
G2 | input |
Distributor signal G2 Distributor signal G2 |
YYellow | — |
|
#6
cell 1,6
|
G1 | input |
Distributor signal G1 Distributor signal G1 |
RRed | — |
|
#7
cell 1,7
|
G- | ground |
Distributor ground reference Distributor ground reference |
BBlack | — |
|
#8
cell 1,8
|
IGT | output |
Igniter trigger Igniter trigger |
RRed | — |
|
#9
cell 1,9
|
PSW | input |
Throttle position switch / pressure switch Throttle position switch / pressure switch |
HH | — |
|
#10
cell 2,1
|
E2 | ground |
Sensor ground Sensor ground |
BRBrown | — |
|
#11
cell 2,2
|
IGF2 | input |
Igniter feedback 2 Igniter feedback 2 |
B-YBlack with Yellow stripe | — |
|
#12
cell 2,3
|
ACC2 | input |
Throttle position sensor sub-signal 2 Throttle position sensor sub-signal 2 |
Y-RYellow with Red stripe | — |
|
#13
cell 2,4
|
IDL | input |
Throttle position sensor idle switch Throttle position sensor idle switch |
Y-LYellow with Blue stripe | — |
|
#14
cell 2,5
|
PSW | input |
Throttle position switch / pressure switch Throttle position switch / pressure switch |
HH | — |
|
#15
cell 2,6
|
T | input |
Check connector test terminal Check connector test terminal |
H-GH with Green stripe | — |
|
#16
cell 2,7
|
VF | input |
Check connector VF signal Check connector VF signal |
GRGray | — |
|
#17
cell 2,8
|
ISC4 | output |
Idle speed control coil 4 Idle speed control coil 4 |
G-HGreen with H stripe | — |
|
#18
cell 2,9
|
ISC3 | output |
Idle speed control coil 3 Idle speed control coil 3 |
L-RBlue with Red stripe | — |
U — U connector - yellow, 10-number shell
Connector face view as shown in the diagram. Top row 1-5. Bottom row 6-10.
Pin list for U — U connector - yellow, 10-number shell
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#1
cell 1,1
|
NSW | input |
Neutral start switch Neutral start switch |
B-LBlack with Blue stripe | — |
|
#2
cell 1,2
|
ECT | signal |
ECT computer signal ECT computer signal |
W-BWhite with Black stripe | — |
|
#3
cell 1,3
|
STA | input |
Starter switch Starter switch |
B-LBlack with Blue stripe | — |
|
#4
cell 1,4
|
#10 | input |
Injector group, cylinders 1 and 4 Injector group, cylinders 1 and 4 |
YYellow | — |
|
#5
cell 1,5
|
E01 | ground |
Power ground Power ground |
H-BH with Black stripe | — |
|
#6
cell 2,1
|
S/TH | input |
Water temperature switch Water temperature switch |
LBlue | — |
|
#7
cell 2,2
|
E1 | ground |
Computer ground Computer ground |
BRBrown | — |
|
•
cell 2,3
|
Empty / unused | — | — |
— |
— |
|
#9
cell 2,4
|
#20 | input |
Injector group, cylinders 2 and 5 Injector group, cylinders 2 and 5 |
BBlack | — |
|
#10
cell 2,5
|
E02 | ground |
Power ground Power ground |
H-BH with Black stripe | — |