4E-FE ECU pinout 				
Pin 	Name 	Wire color 	Explanation 	
Connector 1				
1 	RSC 	Gray 	Rotary Solenoid Close - Cold Idle Speed Control 	
2 	NSW 	Red 	Neutral Starter Switch 	
3 	THW 	Green-Black 	Water Temparature Signal 	
4 	PIM 	LightGreen 	Pressure Intake Manifold 	
5 	THA 	LightGreen-Black 	Intake Air Temparature 	
6 	IGT 	Black-White 	Ignition Timing 	
7 	IGF 	Yellow 	Ignition Feedback from the ignitor coil 	
8 	IGF 	Yellow 	Ignition Feedback from the ignitor coil 	
9 	NE- 	Blue 	Part of the IIA (Intergrated Ignition Assembly) 	
10 	OX 	White 	Oxygen Sensor (Lambda Sensor) 	
11 	STA 	Red(M/T) or Red-White(A/T) 	Engine Cranking Signal (Starter Switch) 	
12 	#10 	Green 	Injector Pulse 1 & 3 	
13 	E01 	White-Black 	Computer Ground 	
14 	RSO 	Black-Red 	Rotary Solenoid - Cold Idle Speed Control 	
15 	HT 	Pink-Blue 	Heated Oxygen Sensor 	
16 	E2 	Brown-White 	Sensor Ground 	
17 	PSW 	Yellow-Red 	Throttle Position Sensor (pin 3) 	
18 	VCC 	LightGreen-Red 	Throttle Position Sensor (pin 1) 	
19 	IDL 	~ 	Throttle Position Sensor (Signals ECU throttle position is at idle) 	
20 	FAN 	Unknown 	Radiator Fan Relay 	
21 	NE 	Green 	RPM Signal 	
22 	ELS3 	~ 	~ 	
23 	IPV 	~ 	Vacuum Switching Valve 	
24 	E1 	Brown 	Computer Ground 	
25 	#20 	Yellow 	Injector Pulse 2 & 4 	
26 	~ 	~ 	~ 	
Connector 2				
1 	~ 	~ 	~ 	
2 	BATT 	White-Green 	Switched Battery Power (+12V) (EFI Main Relay) 	
3 	CCO 	Unknown 	Check Connector Outputs 	
4 	FC 	Green-Red 	Circuit Opening Relay (Fuel Cut) 	
5 	ELS1 	Green 	Electrical Load Signal System Taillight Relay 	
6 	AC2 	Unknown 	12V To Aircon Computer 	
7 	TE2 	White-Blue 	Check Connector 	
8 	TE1 	Gray 	Check Connector (Diagnostics) 	
9 	+B 	Black-Yellow 	Switched Battery Power (12V) 	
10 	W 	Green-White 	Warning Light 	
11 	EGW 	Unknown 	Catalytic Converter Temparature Warning Light (Combination Meter) 	
12 	AC1 	Pink 	A/C Switch Signal System (12V to Aircon Computer) 	
13 	SPD 	Violet 	Speed Signal 	
14 	ACT 	Black-White 	A/C Cut Control System 	
15 	ELS2 	Unknown 	Electrical Load Signal System 	
16 	VF 	Green-Yellow 	Check Connector Outputs