Pin Voltage Charts

Fig 1: ECM Terminal ID

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

26-PIN CONNECTOR CHART

Terminal ID No./Wire Color	Function/ Description	Voltage Value
No. 60 1 Yellow/Blue	Fuel Injector	9-14V with Ignition On
No. 50 2 Yellow/Red	Fuel Injector	9-14V with Ignition On
FRR 3 White/Red	Fuel Pump Relay	N/A
ISC4 4 Blue/Yellow	Idle Speed Control Valve	9-14V with Ignition On
ISC3 5 Yellow	Idle Speed Control Valve	9-14V with Ignition On
ISC2 6 Red/Black	Idle Speed Control Valve	9-14V with Ignition On
ISC1 7 Blue/Black	Idle Speed Control Valve	9-14V with Ignition On
AS 8 Blue	Air Suction VSV	N/A
IPV 9 Yellow/Green	Pulse Air Injection VSV	N/A
No. 40 10 Yellow	Fuel Injector	9-14V with Ignition On
No. 20 11 White/Red	Fuel Injector	9-14V with Ignition On
No. 10 12 Brown	Fuel Injector	9-14V with Ignition On
EO1 13 Brown	ECM Ground	N/A
14	Blank	N/A
VF1 15 Green	Check Connector	1.8-3.2V with Engine Idling, After 2500 RPM For 2 Minutes
VF1 16 Black/White	Check Connector	1.8-3.2V with Engine Idling, After 2500 RPM For 2 Minutes
IGF 17 Black/Green	Ignitor	2V or Less with IgnitionOn
18	Blank	N/A
19	Blank	N/A
20	Blank	N/A
FPU 21 Blue/Red	Fuel Pressure VSV	N/A
FPU 22 Blue/Red	Fuel Pressure VSV	N/A
EGR 22 Blue/White	EGR VSV	N/A
IGT 23 Blk/Lt Green	Ignitor	Pulse Generator with Engine Idling
E1 24 Brown/Black	ECM Ground	N/A
No. 30 25 White/Green	Fuel Injector	N/A
EO2 26 Brown	ECM Ground	N/A

12-PIN CONNECTOR CHART

Terminal ID No./Wire Color	Function/ Description	Voltage Value
HT2 1 Orange	Left Heated Oxygen Sensor	N/A
HT1 2 Gray	Right Heated Oxygen Sensor	N/A
3	Blank	N/A
4	Blank	N/A
5	Blank	N/A
G- 6 Blue	Distributor	N/A
7	Blank	N/A
8	Blank	N/A
9	Blank	N/A
G2 10 Green	Distributor	Pulse Generator withEngine Idling
G1 11 Red	Distributor	Pulse Generator withEngine Idling
NE 12 White	Distributor	Pulse Generator withEngine Idling

22-PIN CONNECTOR CHART

Terminal ID No./Wire Color	Function/ Description	Voltage Value
+B1 1 Yellow/Red	EFI Main Relay	9-14V with Ignition On
BATT 2 Red/Yellow	Battery	9-14V At All Times
M-REL 3 Red	EFI Main Relay	9-14V with Ignition On
W 4 Yellow/White	Warning Indicator	9-14V with Engine Running, Light Off
5	Blank	N/A
6	Blank	N/A
A/C 7 Black/White	A/C Relay	7.5-14V with Ignition On, A/C On 1.5V or Less with Ignition On, A/C Off
SPD 8 Black/Red	Speed Sensor	Pulse Generator while Rotating Drive Wheel with Ignition On
VA 9 Blue	ECT ECM	N/A
NEO 10 Blue/Yellow	ECT ECM	N/A
STA 11 Black/Red	Starter Signal	6V or More with Engine Cranking
B+ 12 Yellow/Red	EFI Main Relay	9-14V with Ignition On
IGSW 13 Black/Blue	Ignition Switch	9-14V with Ignition On
STP 14 Green/White	Stoplight Switch	7.5-14V with Stoplight On, 1.5V or Less with Switch Off
ESA3 15 Blue/White	ECT ECM	N/A
ESA2 16 Blue/Red	ECT ECM	N/A
ESA1 17 Blue/Green	ECT ECM	N/A
ECT 18 Yellow/Green	ECT ECM	N/A
ECT2 19 Blue/Black	ECT ECM	N/A
ECT1 20 Blue/Orange	ECT ECM	N/A
21	Blank	N/A
NSW 22 Black/White	Neutral/Start Switch	3V or Less with IgnitionOn, Gearshift in "P" or "N" 9-14V with Ignition On, Gearshift Not in "P"or "N"

16-PIN CONNECTOR CHART

Terminal ID No./Wire Color	Function/ Description	Voltage Value
VC 1 Green/Red	Airflow Meter Throttle Position Sensor	4.5-5.5V w/ Ignition On
VS 2 Green/Blue	Airflow Meter	3.5-4.5V with Ignition On, Measuring Plate Closed .2-.5V with Ignition On, Measuring Plate Open 1.2-2.4V withEngine Idling .8-1.3V with Engine at 3000 RPM
THA 3 Blue/Yellow	Air Temperature Sensor	.5-3.4V with Ignition OnIntake Air Temp 68°F (20°C)
THW 4 Red/White	Engine Coolant Temperature Sensor	.0-1V with Ignition On, Coolant Temp 176°F (80°C)
OX1 5 Blue/White	Oxygen Sensor	N/A
KNK1 6 White	Front Knock Sensor	Pulse Generator with Engine Idling
TE1 7 Blue	Check Connector	9-14V with Ignition On, TE1 Disconnected
THG 8 Green/Yellow	EGR Gas Temperature Sensor (Calif)	N/A
E2 9 Brown/Black	Sensor Ground	N/A
VTA 10 Green/Black	Throttle Position Sensor	.3-.8V with Ignition On,Throttle Valve Closed 3.2-4.9V with Ignition On, Throttle Valve Open
IDL 11 Green/White	Throttle Position Sensor	9-14V with Ignition On, Throttle Valve Open
OX1 12 Black/Yellow	Oxygen Sensor	N/A
OX2 13 White	Oxygen Sensor	N/A
KNK2 14 Blue/White	Rear Knock Sensor	Pulse Generator with Engine Idling
TE2 15 Blue/Yellow	Check Connector	1.5V or Less with Ignition On, TE1 Disconnected
E11 16 Brown/Black	Sensor Ground	N/A