ECU 1990-91 Japan 4A-GZE AE92

ECU Pinouts for Toyota 4A-GZE ECU

MAP 8.9:1 Compression with DLI

Car Model: AE101?

Toyota Part Number: 89661-12790

Denso Part Number: 175700-3371

by Peter Turner, (pjturner AT yahoo DOT com)

The "TOP OF THE ECU" refers to the side with the orange sticker which reads "4AGZE".
It is also the side of the ECU which can be removed to reveal the circuit board inside!

Pins whose locations are different from those in the other MAP GZE ECU as listed on Club4AG.com's GZE pin out
have their CODE, PIN NUMBER and DESCRIPTION in bold.

Pins which are not used but do have a function in the other GZE ECU as listed on Club4AG.com's GZE pin out
are marked with equal symbols "= = =".

Pins whose IDs are slightly different from other GZE ECU as listed on Club4AG.com's GZE pin out
have just their IDs in bold.

The EVP pin in 16 pin plug is not listed on Club4AG.com's GZE pin out.
This could be a mistake on Moto's part, or, perhaps it is simply not on the other MAP GZE ECU.

Colour Scheme/Leged:
R = Red, W = White, G = Green, B = Black, Blue = Blue, V = Violet (or blue), BR = Brown, LG = Light Green?
What I call BLUE, Moto-P calls VIOLET. I could be wrong in my perception of the wire colour.

Y-G means a yellow wire with green stripe. G-Y means a green wire with yellow stripe.
Y-G is not the same as G-Y. This syntax carries for all listed wires.

No one is helping me out online here so don't blame me for any mistakes made as a result of this page.

The ECU pin outs for this MAP GZE ECU were obtained by myself by opening the ECU cover and reading them off the printed circuit board within. From the information below you can see that the ECUs
Y connector (22 pin) is the same in layout as the other MAP GZE ECU listed on Club4AG.com's GZE pin out.

The 22 pin plug itself is missing so I cannot give the wire colours. Sorry.
Ive left in the Club4AG colour scheme for the 22pin plug in case they are the same.
The 16pin and 26 pin plugs colours schemes ARE correct as these two plugs were on the loom we have!

However the 16pin and 26 pin plugs show several differences. The G- pin is not in the 16pin plug, it is moved to the 26pin plug. Also several of the 26pin plugs functioning pins have been relocated.
These are, all the DISTRIBUTOR PINS, ROTARY SOLENOID (whatever that is?) and the FUEL PRESSURE UP.

Y Connector (22pin)
Bottom Left of Plug Face Bottom Right of ECU Socket	Not Used	-	-	22	1	BATT	R-W	Battery JB3	Top Left of Plug Face Top Right of ECU Socket
	Not Used	-	-	21	2	ELS2	B	Idle-up diode
	Not Used	-	-	20	3	EGW	R	Exhaust temp lamp (inst panel)
	Not Used	-	-	19	4	ELS1	G-W	Battery JB3
	Not Used	-	-	18	5	W	W	Check engine lamp (inst panel)
	Not Used	-	-	17	6	FPR	L-Y	Fuel Pump relay
	Not Used	-	-	16	7	-	-	Not Used
	Diagnostic Connector	LG	CCO	15	8	TIL	G-R	Supercharger indicator (inst panel)
	Circuit opening relay	G-R	FC	14	9	SP1	V-W	Speed sensor (inst panel)
	EFI main relay	B-R	+B1	13	10	A/C	B-W	A/C Clutch
Bottom Right of Plug Face Bottom Left of ECU Socket	EFI main relay	B-R	+B	12	11	STA	B-W	Ignition Starter	Top Right of Plug Face Top Left of ECU Socket

Z Connector (16 pin)
Bottom Left of Plug Face Bottom Right of ECU Socket	===Not Used====	===	===	16	1	VC	Y	FROM ALTERNATOR?	Top Left of Plug Face Top Right of ECU Socket
	Diagnostic Connector	Blue-W	TE1	15	2	PIM	LG-R	Vacuum sensor
	Not Used	-	-	14	3	THA	Y-B	Intake Temp sensor
	Not Used	-	-	13	4	THW	White	Water temp sensor
	TPS	Blue	IDL	12	5	KNK	B	Knock sensor
	TPS	R	VTA	11	6	OX	B	Diagnostic Connector
	???	Blue-W	EVP	10	7	-	-	Not Used
Bottom Right of Plug Face Bottom Left of ECU Socket	TPS	BR	E2	9	8	VF	R-W	Diagnostic Connector	Top Right of Plug Face Top Left of ECU Socket

a Connector (26pin) (should this not be X Connector?)
Bottom Left of Plug Face Bottom Right of ECU Socket	Intake manifold	BR	E02	26	1	===	===	===Not Used======	Top Left of Plug Face Top Right of ECU Socket
	Supercharger Relay	B-Y	SMC	25	2	===	===	===Not Used======
	VSV Bypass	G-R	ABV	24	3	IGF	B-Y	Igniter
	VSV Bleed	W-R	ACV	23	4	NE	B	Distributor
	===Not Used====	===	===	22	5	G2	G	Distributor
	Not Used	-	-	21	6	FPU	Blue-W	VSV Fuel Pressure up
	Igniter	B	IGT	20	7	-	-	Not Used
	Igniter	B-R	IGD	19	8	HT	B-W	O2 Sensor
	Distributor	R	G1	18	9	RSC	B	Rotary solenoid
	Distributor	W	G-	17	10	RSO	B-Blue	Rotary solenoid
	===Not Used====	===	===	16	11	#20	B	Injectors 1,2
	===Not Used====	===	===	15	12	#10	B-R	Injectors 3,4
Bottom Right of Plug Face Bottom Left of ECU Socket	Intake manifold	BR	E1	14	13	E01	BR	Intake manifold	Top Right of Plug Face Top Left of ECU Socket