89661 Ecu Pinout Verified: Toyota

or 22R-E), the pin functions are often (PCB) next to the connector pins. Opening the case with a few screws can provide the most accurate diagram for your specific unit. Engine-Specific Enthusiast Forums : 1UZ-FE (Lexus/Celsior)

Commonly found on the 2JZ-GTE, 1JZ-GTE (non-VVTi), and 5VZ-FE. Two to four horizontal rows of pins. toyota 89661 ecu pinout

: For modern units like the 89661-52592 (Yaris), guides on Scribd or 22R-E), the pin functions are often (PCB)

| Pin | Signal | Notes | |-----|----------------|-------| | B1 | +B (Main relay output) | Switched 12V to sensors | | B2 | +B2 (Injector power) | | | B3 | MREL (EFI main relay control) | ECU grounds to energize relay | | B4 | E01 (Power ground) | To engine block | | B5 | E02 (Power ground) | | | B6 | E03 | | | B7 | #10 (Injector 1) | ECU grounds injector | | B8 | #20 (Injector 2) | | | B9 | #30 (Injector 3) | | | B10 | #40 (Injector 4) | | | B11 | #50 (Injector 5 – V6) | | | B12 | #60 (Injector 6 – V6) | | | B13 | FC (Fuel pump control) | To fuel pump relay | | B14 | FPR (Fuel pressure regulator) | For returnless systems | | B15 | VSV (VVT oil control valve) | Variable valve timing solenoid | | B16 | EGR (EGR vacuum solenoid) | | | B17 | PRG (Purge VSV) | Evaporative emissions | | B18 | IAC1 (Idle air control – close) | | | B19 | IAC2 (IAC – open) | | | B20 | FAN (Cooling fan relay) | | | B21 | CEL (Check engine light) | To instrument cluster | | B22 | TC (Diagnostic test connector) | | Two to four horizontal rows of pins