CU 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 |
There are a few differences between the rare 4AGZE ECU and the non-supercharged versions. My car is running a 4AGZE engine plus a turbo on a Corolla GTS ECU and Supra AFM without *much* difficulty. The specific differences and possible solutions are.....
Extra GTS pins,
GTS ecu has S/TH pin. This is for T-vis solenoid. - Not used
GTS ecu has v/isc pin. Idle-up solenoid. - Not used
Extra 4AGZE pins,
RSO, RSC, - Not used, idle set by screw.
EGR, - No solenoid on egr valve, egr functions fine.
SMC, - Supercharger (and intercooler fan) on dashboard switch.
G1, G2, - use GTS distributor (2 pickups) instead of 4AGZE (3 pickups), MSD 6BTM is used to retard spark under boost.
VS3, - dashboard switch controls supercharger.
R/P, - Use premium always. (who doesn't?)
VS2, - Supercharger vents connected to supercharger output.
TIL, I suppose you could use a LIGHTED dashboard supercharger switch.
W - You have access to this under the hood at the diagnostic connector.
SPD Not used. (no speed limiter)
FPU - Ummm, I don't think this is connected either.
ELS1 - Not used.
KNK - I WISH my ecu could use a knock sensor, see R/P and G1, G2.
THG - Not used either
ELS2 - Not used, idle is set with screw.