1986 1G-GEU ECU pinout
1986 1G-GEU engine control ECU connector layout with Q, R and S plugs. Terminal functions and visible wire colours have been entered as a starter pinout. Blank or variant-dependent positions remain editable.
First letter = basic wire color. Second code = stripe color. Example: L-Y means blue wire with yellow stripe.
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.
Connector face view as shown in the diagram. Existing cavities are 1,2,3,5,6,7,8,9,10,11,12 / 13,14,17,18,20,21,23,24.
Connector face view as shown in the diagram. Top row 1-9. Bottom row 10-18.
Connector face view as shown in the diagram. Top row has cavities 1,3,4,5. Bottom row 6-10.
Source connectors one by one
Connector face view as shown in the diagram. Existing cavities are 1,2,3,5,6,7,8,9,10,11,12 / 13,14,17,18,20,21,23,24.
Pin list for Q — Q connector - blue, 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
|
IG | power |
Ignition switch power Ignition switch power |
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
|
CCO | output |
Air conditioning / idle-up control Air conditioning / idle-up control |
G-BGreen with Black stripe | — |
|
#5
cell 1,5
|
THA | input |
Air temperature sensor Air temperature sensor |
LGLight Green | — |
|
#6
cell 1,6
|
W | output |
Check engine warning light Check engine warning light |
GR-GGray with Green stripe | — |
|
#7
cell 1,7
|
SPD | input |
Speedometer signal Speedometer signal |
PPink | — |
|
#8
cell 1,8
|
FC | output |
Fuel pump control Fuel pump control |
GGreen | — |
|
#9
cell 1,9
|
M-REL | signal |
EFI Main Relay Trigger EFI Main Relay Trigger |
B-OBlack with Orange stripe | — |
|
#10
cell 1,10
|
L3 | input |
ECT computer L3 ECT computer L3 |
R-WRed with White stripe | — |
|
#11
cell 1,11
|
L2 | input |
ECT computer L2 ECT computer L2 |
RRed | — |
|
#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 | — |
|
#17
cell 2,5
|
STP | output |
Stop lamp switch Stop lamp switch |
G-WGreen with White stripe | — |
|
#18
cell 2,6
|
EGW | output |
Check engine warning light Check engine warning light |
Y-LYellow with Blue 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
|
L1 | input |
ECT computer L1 ECT computer L1 |
BBlack | — |
|
#23
cell 2,11
|
E11 | ground |
ECU ground ECU ground |
BRBrown | — |
|
#24
cell 2,12
|
E21 | ground |
Sensor ground Sensor ground |
BRBrown | — |
Connector face view as shown in the diagram. Top row 1-9. Bottom row 10-18.
Pin list for R — R 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
|
IGF | input |
Igniter feedback Igniter feedback |
— |
— |
|
#3
cell 1,3
|
IGT | output |
Igniter trigger Igniter trigger |
— |
— |
|
#4
cell 1,4
|
NE | input |
Distributor NE signal Distributor NE signal |
LBlue | — |
|
#5
cell 1,5
|
G2 | signal |
Intake Camshaft Position Sensor Intake Camshaft Position Sensor |
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
|
ISC2 | output |
Idle speed control coil 2 Idle speed control coil 2 |
G-WGreen with White stripe | — |
|
#9
cell 1,9
|
ISC1 | output |
Idle speed control coil 1 Idle speed control coil 1 |
H-YH with Yellow stripe | — |
|
#10
cell 2,1
|
E2 | ground |
Sensor ground Sensor ground |
BRBrown | — |
|
#11
cell 2,2
|
VCC | input |
Sensor reference voltage Sensor reference voltage |
L-RBlue with Red stripe | — |
|
#12
cell 2,3
|
PIM | input |
Vacuum sensor signal Vacuum sensor signal |
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
|
VTA | input |
Throttle position sensor signal Throttle position sensor signal |
HH | — |
|
#15
cell 2,6
|
T | input |
Check connector test terminal Check connector test terminal |
V-GViolet 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 |
— |
— |
|
#18
cell 2,9
|
ISC3 | output |
Idle speed control coil 3 Idle speed control coil 3 |
L-RBlue with Red stripe | — |
Connector face view as shown in the diagram. Top row has cavities 1,3,4,5. Bottom row 6-10.
Pin list for S — S 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 |
— |
— |
|
#3
cell 1,3
|
STA | input |
Starter switch Starter switch |
B-LBlack with Blue stripe | — |
|
#4
cell 1,4
|
#10 | output |
Injector group, cylinders 1 and 4 Injector group, cylinders 1 and 4 |
— |
— |
|
#5
cell 1,5
|
E01 | ground |
Power ground Power ground |
W-BWhite 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 | — |
|
#8
cell 2,3
|
#30 | output |
Injector group, cylinders 3 and 5 Injector group, cylinders 3 and 5 |
— |
— |
|
#9
cell 2,4
|
#20 | output |
Injector group, cylinders 2 and 6 Injector group, cylinders 2 and 6 |
— |
— |
|
#10
cell 2,5
|
E02 | ground |
Power ground Power ground |
W-BWhite with Black stripe | — |