ECU / loom pinout
1989 7M-GE ECU pinout - dark gray (N / O / P)
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.
N — N connector (dark gray, 10-pin shell)
Top row is 1-5 left to right. Bottom row is 6-10 left to right.
O — O connector (dark gray, 18-pin shell)
Top row is 1-9 left to right. Bottom row is 10-18 left to right.
P — P connector (dark gray, 24-pin shell)
Top row is 1-9, gap, 11-12. Bottom row is 13-24 left to right.
Detailed connector view
Source connectors one by one
N — N connector (dark gray, 10-pin shell)
Top row is 1-5 left to right. Bottom row is 6-10 left to right.
Pin list for N — N connector (dark gray, 10-pin shell)
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#5
cell 1,1
|
EO1 | — | — | W-BWhite with Black stripe | — |
|
#4
cell 1,2
|
#10 | output |
Cylinder 1 injector driver ECU-controlled low-side injector output. Injector should have switched ignition power on one side and this ECU pin on the other side. |
W-LWhite with Blue stripe | — |
|
#3
cell 1,3
|
STA | input |
STARTER SWITCH Starter switch |
B-LBlack with Blue stripe | — |
|
#2
cell 1,4
|
STJ | output |
COLD START INJECTOR COLD START INJECTOR. |
GGreen | — |
|
#
cell 1,5
|
No label | — | — |
— |
— |
|
#10
cell 2,1
|
EO2 | — | — | W-BWhite with Black stripe | — |
|
#9
cell 2,2
|
#20 | output |
Cylinder 2 injector driver ECU-controlled low-side injector output. Injector should have switched ignition power on one side and this ECU pin on the other side. |
W-RWhite with Red stripe | — |
|
#8
cell 2,3
|
#30 | output |
Cylinder 3 injector driver ECU-controlled low-side injector output. Injector should have switched ignition power on one side and this ECU pin on the other side. |
WWhite | — |
|
#7
cell 2,4
|
E1 | ground |
COMPUTER GROUND Computer ground |
BRBrown | — |
|
#6
cell 2,5
|
HT | Output |
Oxygen sensor heater Low-side control for the heated oxygen sensor heater. The heater helps the oxygen sensor reach operating temperature quickly. |
R-LRed with Blue stripe | — |
O — O connector (dark gray, 18-pin shell)
Top row is 1-9 left to right. Bottom row is 10-18 left to right.
Pin list for O — O connector (dark gray, 18-pin shell)
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#9
cell 1,1
|
ISC1 | signal |
Idle speed control valve coil 1 Idle speed control coil 1 |
W-YWhite with Yellow stripe | — |
|
#8
cell 1,2
|
ISC2 | signal |
Idle speed control valve coil 2 Idle speed control coil 2 |
G-WGreen with White stripe | — |
|
#
cell 1,3
|
No label | — | — |
— |
— |
|
#6
cell 1,4
|
G- | ground |
DISTRIBUTOR Distributor / CPS ground reference |
BBlack | — |
|
#5
cell 1,5
|
G2 | signal |
DISTRIBUTOR Intake Camshaft Position Sensor |
YYellow | — |
|
#4
cell 1,6
|
IGF | signal |
Igniter verification signal Igniter Verification Signal |
LG-BLight Green with Black stripe | — |
|
#3
cell 1,7
|
IGT | signal |
IGNITER Ignition Trigger Cyl 1 & Cyl 6 |
LGLight Green | — |
|
#2
cell 1,8
|
G1 | signal |
DISTRIBUTOR Distributor / CPS signal G1 |
RRed | — |
|
#1
cell 1,9
|
NE | signal |
DISTRIBUTOR Distributor / CPS NE signal |
LBlue | — |
|
#18
cell 2,1
|
ISC3 | signal |
Idle speed control valve coil 3 Idle speed control coil 3 |
L-RBlue with Red stripe | — |
|
#17
cell 2,2
|
ISC4 | signal |
Idle speed control valve coil 4 Idle speed control coil 4 |
R-BRed with Black stripe | — |
|
#16
cell 2,3
|
VF | signal |
CHECK CONNECTOR Check connector VF signal |
GRGray | — |
|
#15
cell 2,4
|
TE1 | input |
Diagnostic test mode 1 Check connector test terminal |
R-GRed with Green stripe | — |
|
#
cell 2,5
|
No label | — | — |
— |
— |
|
#13
cell 2,6
|
ISC3 | signal |
Idle speed control valve coil 3 Idle speed control coil 3 |
L-RBlue with Red stripe | — |
|
#12
cell 2,7
|
THG | input |
Turbo water temperature sensor Turbo water temperature sensor |
B-YBlack with Yellow stripe | — |
|
#11
cell 2,8
|
OX-2 | — | — | R-LRed with Blue stripe | — |
|
#10
cell 2,9
|
KNK | input |
KNOCK SENSOR Knock sensor |
WWhite | — |
P — P connector (dark gray, 24-pin shell)
Top row is 1-9, gap, 11-12. Bottom row is 13-24 left to right.
Pin list for P — P connector (dark gray, 24-pin shell)
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#12
cell 1,1
|
OX-1 | — | — | WWhite | — |
|
#11
cell 1,2
|
VSV1 | signal |
VSV (AIR CONTROL) Intake Air Bypass Valve Vacuum |
LG-BLight Green with Black stripe | — |
|
#9
cell 1,4
|
M-REL | power |
EFI MAIN RELAY (COIL) EFI Main Relay Trigger |
B-OBlack with Orange stripe | — |
|
#8
cell 1,5
|
EGR | signal |
VSV (EGR) EGR VSV |
R-BRed with Black stripe | — |
|
#7
cell 1,6
|
SPD | input |
Vehicle speed signal Speedometer signal |
PPink | — |
|
#6
cell 1,7
|
FP | power |
FUEL PUMP RELAY Fuel pump relay / control |
YYellow | — |
|
#5
cell 1,8
|
THA | input |
Intake air temperature sensor Air temperature sensor |
LGLight Green | — |
|
#4
cell 1,9
|
VS | input |
AIR FLOW METER Air flow meter signal |
LG-RLight Green with Red stripe | — |
|
#3
cell 1,10
|
VC | input |
Regulated 5 V sensor supply Sensor reference voltage |
L-RBlue with Red stripe | — |
|
#2
cell 1,11
|
BATT | power |
Constant battery power Battery constant power |
B-YBlack with Yellow stripe | — |
|
#1
cell 1,12
|
IGSW | power |
Ignition switch signal Ignition switch |
GRGray | — |
|
#24
cell 2,1
|
E2 | ground |
SENSOR GROUND Sensor ground |
BRBrown | — |
|
#23
cell 2,2
|
L1 | signal |
ECT COMPUTER ECT computer L1 |
BBlack | — |
|
#22
cell 2,3
|
L2 | signal |
ECT COMPUTER ECT computer L2 |
RRed | — |
|
#21
cell 2,4
|
L3 | signal |
ETC COMPUTER ECT computer L3 |
R-WRed with White stripe | — |
|
#20
cell 2,5
|
A/C | signal |
Air-conditioning request A/C magnet switch |
L-RBlue with Red stripe | — |
|
#19
cell 2,6
|
W | signal |
WARNING LIGHT Engine Warning Light (Check Engine |
GR-GGray with Green stripe | — |
|
#18
cell 2,7
|
DFG | power |
DEFOGGER RELAY |
VViolet | — |
|
#17
cell 2,8
|
ECT | signal |
ECT COMPUTER ECT computer signal |
R-LRed with Blue stripe | — |
|
#16
cell 2,9
|
LP | power |
HEADLIGHT RELAY Headlight relay |
GRGray | — |
|
#15
cell 2,10
|
E11 | ground |
ECU ground ECU ground |
BRBrown | — |
|
#14
cell 2,11
|
VTA | input |
THROTTLE POSITION SENSOR Throttle Position Sensor (Actual |
W-RWhite with Red stripe | — |
|
#13
cell 2,12
|
IDL | input |
THROTTLE POSITION SENSOR Throttle position sensor idle switch |
Y-LYellow with Blue stripe | — |