4afe Ecu Wiring Diagram Pdf [OFFICIAL]
| Pin | Wire Color | Function | Use | | :--- | :--- | :--- | :--- | | C1 | W | Ignition Coil Signal (IGT) | From ECU to igniter | | C2 | R | IGF (Ignition Confirmation) | From igniter to ECU | | C3 | W-R | Check Engine Light (W) | Switched ground | | C4 | G | TE1 (Diagnostic Jumper) | Connect to E1 for code reading | | C5 | BR | E1 (Ground for Diag) | Sensor ground reference |
: Critical pins include IGT (Ignition Trigger) and IGF (Ignition Confirmation signal). 4afe ecu wiring diagram pdf
: Toyota uses abbreviations like W-R (White with Red stripe) or B-Y (Black with Yellow stripe). Always cross-reference these with the legend in your PDF. | Pin | Wire Color | Function |
| Pin | Wire Color | Function | Signal Type | |-----|------------|----------|--------------| | A1 | Black/Orange | EFI Main Relay (B+) | +12V Input | | A2 | Brown | EGR Vacuum VSV | Output | | A3 | Red/Black | Fuel Pump Relay Control | Output | | A4 | White/Red | Starter Signal (STA) | +12V Input | | A5 | Black/Yellow | Ignition Coil (IGT) | Output | | A6 | Yellow | Ignition Confirmation (IGF) | Input | | A7 | - | N/C | - | | A8 | Red/Blue | Engine Ground (E1) | Ground | | A9 | White/Black | Power Ground (E01) | Ground | | A10 | White/Black | Power Ground (E02) | Ground | | A11 | Blue/Red | Check Engine Light (W) | Output | | A12 | Black | Engine Ground (E2) | Ground | | A13 | Yellow/Black | Tachometer Signal | Output | | A14 | Light Green | Neutral Start Switch (NSW) | Input | | A15 | Red | Battery Backup (+B1) | +12V Input | | A16 | Gray/Red | A/C Switch Signal | Input | | A17 | Light Green/Black | Electric Load Signal | Input | | A18 | Pink | A/C Compressor Relay | Output | | A19 | Black/White | System Main Relay | Output | | A20 | Yellow/Red | O2 Heater Relay | Output | | A21 | Light Blue | Diagnostic Port (T) | Data | | A22 | Light Green/Red | PS Power Steering Switch | Input | | A23 | Brown/Yellow | VSV for Fuel Pressure Up | Output | | A24 | Blue/White | Idle Air Control Valve (RSO) | Output | | A25 | Blue/Yellow | Idle Air Control Valve (RSC) | Output | | A26 | Black/White | Stop Lamp Switch | Input | 4afe ecu wiring diagram pdf