If you short pin C1 or C2 to ground, the ECU will die instantly. Never pierce these 5V reference wires with a test light connected to battery positive. Section C: "Hot" Actuator Outputs (Injectors & Coil) These wires carry pulsed 12V to critical components. They are "hot" only when the engine is running or cranking.
| Pin # | Sensor | Wire Color | Voltage | | :--- | :--- | :--- | :--- | | | Throttle Position Sensor (TPS) +5V | Light Green (L-G) | 5.0V | | C2 | Manifold Absolute Pressure (MAP) +5V | Light Green/Red (L-R) | 5.0V | | C3 | Crankshaft Position Sensor (Ne) | Shielded White | 2.0V AC (Cranking) | daihatsu hijet efse ecu pinout hot
The EFSE ECU uses a single, dense 60-pin connector (Denso 90980-11160). Below is the critical pinout focusing on . Section A: Primary Power & Grounds (The "Must-Haves") | Pin # | Function | Wire Color | Condition | "Hot" Status | | :--- | :--- | :--- | :--- | :--- | | B1 | Battery +12V (Main Backup) | White/Red (W-R) | Always Hot | Constant 12V | | B2 | Ground (ECU Power) | Black/White (B-W) | Always Ground | Chassis Ground | | B3 | Ignition Switch +12V | Black/Red (B-R) | Key ON/START | Switched 12V | | B4 | Ground (Sensor Return) | Brown (BR) | Always Ground | Signal Ground | | B5 | Main Relay Control (EFI Relay) | Yellow/Green (Y-G) | Key ON: 12V out | Switched Output | If you short pin C1 or C2 to
Use a screwdriver or large test light on ECU pins. Low-current circuits will be destroyed. They are "hot" only when the engine is running or cranking