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If you have crank but no fire, check the VC (5V Reference) . If a sensor is shorted (like a crushed wire on the AC pressure switch), it can pull the 5V line to 0V, effectively "blinding" the ECU.
OBD2 (K-Line or CAN) and the EDU trigger signals. Primary Pinout Functions (Common Denso 104-Pin/134-Pin) toyota 2kdftv ecu pinout diagram best
These are not direct injector wires. They are trigger signals sent to the EDU, which then fires the injectors. 3. Vital Engine Sensors If you have crank but no fire, check the VC (5V Reference)
Ensure the SCV (Suction Control Valve) and the Fuel Rail Pressure sensor are pinned correctly. toyota 2kdftv ecu pinout diagram best
