| Pin No. | Wire Color (Typ) | Function | Description | | :--- | :--- | :--- | :--- | | | Yellow/Red | VC (Voltage Control) | +5V Reference for TPS/MAF | | 13 | Light Green | THA (Intake Air Temp) | Signal from IAT sensor | | 14 | Blue | THW (Water Temp) | Signal from Coolant Temp sensor | | 15 | White | VS/PA (Air Flow) | Signal from MAF/Vacuum sensor | | 22 | Green | Ne+ (Crank/RPM) | Distributor/Crank Angle Signal (+) | | 23 | Red | Ne- (Crank/RPM) | Distributor/Crank Angle Signal (-) |

Avoid generic auto-repair sites—use Japanese import forums or buy the genuine EWD (Electrical Wiring Diagram) booklet from Daihatsu.

Use a high-impedance digital multimeter (>10k ohm/V) to avoid damaging the sensitive ECU internal circuits .