ECU Terminal Connections
4A-GZE (USA Model AW11)
schematics contributed by Andy Karkos
Toyota 4AGZE ECU pin-outs (U.S. with AFM and distributor)
From the Toyota MR2 1988 electrical wiring diagram.
EO2 | E01 | Earth 01, Earth 02 |
RSO | RSC | both to ISC valve |
IGT | STA | IGniTer, STArter signal and cold-start injector |
E1 | EGR | Earth 1, EGR solenoid |
SMC | NSW | Supercharger relay, Neutral switch 0r clutch switch |
xxx | #10 | not used, Injectors 1 and 3 |
xxx | #20 | not used, injectors 2 and 4 |
VF | G- | Check connector, distributor pickup coil |
T | G1 | Test pin (check connector), dist. pickup coil |
VTA | G2 | throttle position sensor, distributor pickup coil |
IDL | NE | Throttle position sensor, distributor pickup coil |
HT | VS3 | O2 sensor heater, air bypass valve solenoid |
OX | IGF | Oxygen sensor, IGnition Feedback from ignitor |
E2 | THW | common for THW THG and AFM, THermistor Water temp |
E22 | R/P | Same as e2, Regular/Premium switch |
xxx | VS2 | Not used, supercharger vent solenoid |
L3 | L1 | From ECT computer |
ECT | L2 | From ECT computer |
A/C | TIL | From a/c amplifier,Supercharger light |
W | SPD | To check engine Warning light, speed sensor |
FPU | ELS1 | Fuel Pressure Up solenoid, stop light switch |
KNK | THA | KNocK sensor, THermistor Air temp (in afm) |
xxx | VS | not used, AFM wiper |
THG | VC | THermistor eGr, AFM supply voltage |
B+ | Bat | switched +12v, constant +12v |
+B1 | ELS2 | switched +12v, idle up diode |