ECU / loom pinout
1991 JZA70 1JZ-GTE ECU pinout
1991 JZA70 1JZ-GTE EFI ECU pinout.
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.
X — X connector - grey 26-pin ECU plug, left plug
Connector face / ECU inspection view. 13 cells top row and 13 cells bottom row.
W — W connector - grey 16-pin ECU plug
Connector face / ECU inspection view. 8 cells top row and 8 cells bottom row.
U — U connector - grey 12-pin ECU plug
Connector face / ECU inspection view. 6 cells top row and 6 cells bottom row.
T — T connector - grey 22-pin ECU plug, right plug
Connector face / ECU inspection view. 11 cells top row and 11 cells bottom row.
SUB — Sub-throttle sensor connector - NCO / IDL2 / VTA2
Connector face view from the inspection page. Used for TRC/sub-throttle checks.
Detailed connector view
Source connectors one by one
X — X connector - grey 26-pin ECU plug, left plug
Connector face / ECU inspection view. 13 cells top row and 13 cells bottom row.
Pin list for X — X connector - grey 26-pin ECU plug, left plug
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#1
cell 1,1
|
EO1 | — |
Engine ECU ground. Continuity to body ground. |
W-BWhite with Black stripe | — |
|
#2
cell 1,2
|
#10 | — |
Injector drive signal. To body ground: 10-14 V; pulse generated while idling. |
W-LWhite with Blue stripe | — |
|
#3
cell 1,3
|
#20 | — |
Injector drive signal. To body ground: 10-14 V; pulse generated while idling. |
W-RWhite with Red stripe | — |
|
•
cell 1,4
|
Empty / unused | — | — |
— |
— |
|
•
cell 1,5
|
Empty / unused | — | — |
— |
— |
|
•
cell 1,6
|
Empty / unused | — | — |
— |
— |
|
#7
cell 1,7
|
ISC1 | — |
Idle speed control signal. To body ground: pulse generated while idling. |
W-YWhite with Yellow stripe | — |
|
#8
cell 1,8
|
ISC2 | — |
Idle speed control signal. To body ground: pulse generated while idling. |
G-WGreen with White stripe | — |
|
#9
cell 1,9
|
ISC3 | — |
Idle speed control signal. To body ground: pulse generated while idling. |
L-RBlue with Red stripe | — |
|
#10
cell 1,10
|
ISC4 | — |
Idle speed control signal. To body ground: pulse generated while idling. |
R-BRed with Black stripe | — |
|
•
cell 1,11
|
Empty / unused | — | — |
— |
— |
|
•
cell 1,12
|
Empty / unused | — | — |
— |
— |
|
#13
cell 1,13
|
HT | — |
Oxygen sensor heater control. To body ground: 10-14 V at 3000 rpm with coolant temperature above approximately 80°C. |
R-LRed with Blue stripe | — |
|
#14
cell 2,1
|
EO2 | — |
Engine ECU ground. Continuity to body ground. |
W-BWhite with Black stripe | — |
|
#15
cell 2,2
|
#30 | — |
Injector drive signal. To body ground: pulse generated while idling. |
WWhite | — |
|
#16
cell 2,3
|
E1 | — |
Sensor / ECU ground. Continuity to body ground. |
BRBrown | — |
|
#17
cell 2,4
|
IGT1 | — |
Ignition trigger signal. To body ground: pulse generated while idling. |
R-WRed with White stripe | — |
|
#18
cell 2,5
|
IGT2 | — |
Ignition trigger signal. |
R-GRed with Green stripe | — |
|
#19
cell 2,6
|
IGT3 | — |
Ignition trigger signal. |
R-BRed with Black stripe | — |
|
#20
cell 2,7
|
IGT4 | — |
Ignition trigger signal. |
R-YRed with Yellow stripe | — |
|
#21
cell 2,8
|
IGT5 | — |
Ignition trigger signal. |
RRed | — |
|
#22
cell 2,9
|
IGT6 | — |
Ignition trigger signal. |
YYellow | — |
|
#23
cell 2,10
|
IGF | — |
Ignition confirmation signal. To body ground: 1.2 V or less. |
R-LRed with Blue stripe | — |
|
#24
cell 2,11
|
FPR | — |
Fuel pump resistor control. To body ground: 10-14 V while idling; 0-3 V around 1500 rpm. |
— |
— |
|
#25
cell 2,12
|
VF | — |
Feedback monitor signal. To body ground: 1.9-3.1 V after running at 2500 rpm for 2 minutes and returning to idle. |
GRGray | — |
|
#26
cell 2,13
|
FC | — |
Fuel pump control. To body ground: 10-14 V normally; 0-3 V during cranking and while idling. |
GGreen | — |
W — W connector - grey 16-pin ECU plug
Connector face / ECU inspection view. 8 cells top row and 8 cells bottom row.
Pin list for W — W connector - grey 16-pin ECU plug
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#1
cell 1,1
|
TT | — | — | Y-BYellow with Black stripe | — |
|
#2
cell 1,2
|
TE1 | — | — | R-GRed with Green stripe | — |
|
#3
cell 1,3
|
KNK1 | — | — | WWhite | — |
|
#4
cell 1,4
|
Ox | — |
Oxygen sensor signal. To body ground: repeats 0-1 V after running at 2500 rpm for 2 minutes; 0-3 V while idling. |
WWhite | — |
|
#5
cell 1,5
|
THW | — |
Water temperature sensor signal. To body ground: 0.3-0.8 V at approximately 80°C coolant temperature. |
GGreen | — |
|
#6
cell 1,6
|
THA | — |
Intake air temperature sensor signal. To body ground: 1.7-3.1 V at approximately 20°C ambient/intake temperature. |
LGLight Green | — |
|
#7
cell 1,7
|
PIM | — |
Turbo pressure sensor signal. To body ground: 2.3-3.0 V with sensor hose disconnected; 1.6-2.1 V with 300 mmHg boost pressure. |
LG-BLight Green with Black stripe | — |
|
#8
cell 1,8
|
VC | — |
Sensor 5 V reference. To body ground: 4.5-5.5 V. |
L-BBlue with Black stripe | — |
|
•
cell 2,1
|
Empty / unused | — | — |
— |
— |
|
#10
cell 2,2
|
TE2 | — | — | LBlue | — |
|
#11
cell 2,3
|
KNK2 | — | — | WWhite | — |
|
•
cell 2,4
|
Empty / unused | — | — |
— |
— |
|
•
cell 2,5
|
Empty / unused | — | — |
— |
— |
|
#14
cell 2,6
|
IDL | — |
Throttle position idle contact. To body ground: 2.5 V or less with throttle fully closed; 10-14 V with throttle fully open. |
Y-LYellow with Blue stripe | — |
|
#15
cell 2,7
|
VTA | — |
Throttle position signal. To body ground: 1.5 V or less with throttle fully closed; 3.0-5.5 V with throttle fully open. |
W-RWhite with Red stripe | — |
|
#16
cell 2,8
|
E2 | — |
Sensor ground. Continuity to body ground. |
BRBrown | — |
U — U connector - grey 12-pin ECU plug
Connector face / ECU inspection view. 6 cells top row and 6 cells bottom row.
Pin list for U — U connector - grey 12-pin ECU plug
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#1
cell 1,1
|
NE- | — |
Crank position / engine speed pickup return. |
L-GBlue with Green stripe | — |
|
#2
cell 1,2
|
G1- | — |
Cam position sensor return. |
WWhite | — |
|
#3
cell 1,3
|
G2- | — |
Cam position sensor return. |
W-LWhite with Blue stripe | — |
|
#4
cell 1,4
|
EVP | — |
Evaporative purge control. To body ground: 10-14 V with diagnostic connector TE1-E1 shorted. |
WWhite | — |
|
•
cell 1,5
|
Empty / unused | — | — |
— |
— |
|
•
cell 1,6
|
Empty / unused | — | — |
— |
— |
|
#7
cell 2,1
|
NE | — |
Crank position / engine speed pickup signal. NE+ to NE-: pulse generated while idling. |
L-YBlue with Yellow stripe | — |
|
#8
cell 2,2
|
G1 | — |
Cam position sensor signal. G1+ to G1-: pulse generated while idling. |
OOrange | — |
|
#9
cell 2,3
|
G2 | — |
Cam position sensor signal. G2+ to G2-: pulse generated while idling. |
O-LOrange with Blue stripe | — |
|
•
cell 2,4
|
Empty / unused | — | — |
— |
— |
|
#11
cell 2,5
|
CCO | — |
Exhaust temperature / catalyst temperature signal. To body ground: 2.5-5.5 V normally; 0-2 V at exhaust gas temperature above approximately 900°C. |
G-BGreen with Black stripe | — |
|
#12
cell 2,6
|
EGW | — |
Exhaust gas temperature warning output. To body ground: 0-3 V with warning lamp ON; 10-14 V with lamp OFF. |
Y-LYellow with Blue stripe | — |
T — T connector - grey 22-pin ECU plug, right plug
Connector face / ECU inspection view. 11 cells top row and 11 cells bottom row.
Pin list for T — T connector - grey 22-pin ECU plug, right plug
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
#1
cell 1,1
|
STA | — |
Starter signal. To body ground: 6 V or less during cranking. |
B-LBlack with Blue stripe | — |
|
•
cell 1,2
|
Empty / unused | — | — |
— |
— |
|
•
cell 1,3
|
Empty / unused | — | — |
— |
— |
|
#4
cell 1,4
|
SP1 | — |
Vehicle speed signal. To body ground: repeats 0-5 V while the vehicle is moving slowly. |
— |
— |
|
#5
cell 1,5
|
A/C | — |
A/C request signal. To body ground: 10-14 V with A/C ON; 0-3 V with A/C OFF. |
L-RBlue with Red stripe | — |
|
#6
cell 1,6
|
A/C MG | — |
A/C magnetic clutch signal. To body ground: 0-3 V with clutch ON; 10-14 V after idle-up delay. |
BRBrown | — |
|
#7
cell 1,7
|
ELS | — |
Electrical load idle-up input. To body ground: 10-14 V with tail/head/fog lamp load ON; 1 V or less with load OFF. |
R-YRed with Yellow stripe | — |
|
#8
cell 1,8
|
W | — |
Check engine warning lamp output. To body ground: 0-3 V with warning lamp ON; 10-14 V with lamp OFF. |
GR-GGray with Green stripe | — |
|
#9
cell 1,9
|
M-REL | — |
Main relay control to body ground: 10-14 V. |
B-OBlack with Orange stripe | — |
|
#10
cell 1,10
|
BATT | — |
Constant battery voltage to body ground: 10-14 V. |
B-YBlack with Yellow stripe | — |
|
#11
cell 1,11
|
+B1 | — |
EFI switched power to body ground: 10-14 V. |
B-RBlack with Red stripe | — |
|
#12
cell 2,1
|
NSW | — |
Neutral start switch input. To body ground: 1.5 V or less in P/N; 10-14 V in R/D/L. |
B-WBlack with White stripe | — |
|
•
cell 2,2
|
Empty / unused | — | — |
— |
— |
|
•
cell 2,3
|
Empty / unused | — | — |
— |
— |
|
•
cell 2,4
|
Empty / unused | — | — |
— |
— |
|
•
cell 2,5
|
Empty / unused | — | — |
— |
— |
|
#17
cell 2,6
|
L1 | — | — |
— |
— |
|
#18
cell 2,7
|
L2 | — | — |
— |
— |
|
#19
cell 2,8
|
L3 | — | — |
— |
— |
|
#20
cell 2,9
|
STP | — |
Stop lamp switch input. To body ground: 10-14 V with brake switch ON; 0-3 V with switch OFF. |
G-WGreen with White stripe | — |
|
#21
cell 2,10
|
IGSW | — |
Ignition switch signal to body ground: 10-14 V with ignition switch ON. |
GRGray | — |
|
#22
cell 2,11
|
+B | — |
EFI switched power to body ground: 10-14 V. |
B-RBlack with Red stripe | — |
SUB — Sub-throttle sensor connector - NCO / IDL2 / VTA2
Connector face view from the inspection page. Used for TRC/sub-throttle checks.
Pin list for SUB — Sub-throttle sensor connector - NCO / IDL2 / VTA2
Labels, signal names and notes for the selected connector.
| Pin | Label / signal | I/O | Function / description | Wire / req. | Links |
|---|---|---|---|---|---|
|
•
cell 1,1
|
Empty / unused | — | — |
— |
— |
|
•
cell 1,2
|
Empty / unused | — | — |
— |
— |
|
•
cell 1,3
|
Empty / unused | — | — |
— |
— |
|
•
cell 1,4
|
Empty / unused | — | — |
— |
— |
|
#5
cell 1,5
|
NCO- | — |
Sub-throttle control / NCO return. |
— |
— |
|
•
cell 2,1
|
Empty / unused | — | — |
— |
— |
|
#7
cell 2,2
|
IDL2 | — |
Sub-throttle idle contact. To body ground: 0-3 V. |
BRBrown | — |
|
#8
cell 2,3
|
VTA2 | — |
Sub-throttle position signal. To body ground: 4.5-5.5 V. |
L-BBlue with Black stripe | — |
|
•
cell 2,4
|
Empty / unused | — | — |
— |
— |
|
#10
cell 2,5
|
NCO+ | — |
Sub-throttle control / NCO signal. NCO+ to NCO-: pulse generated while idling. |
— |
— |