Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Terminals Of Ecu
- TERMINALS OF ECUΒ ECU CONNECTOR TERMINAL REFERENCE
Terminal No. (Symbol) Terminal Description A24-1 (GND1) Skid control ECU ground A24-2 (+BM1) Power supply for motor A24-3 (FR+) Front speed sensor RH power supply output A24-4 (FL-) Front speed sensor LH input A24-5 (RR+) Rear speed sensor RH power supply output A24-6 (RL-) Rear speed sensor LH input A24-7 (STP) Stop light switch A24-9 (TRS) CRAWL ON/OFF switch A24-11 (CANH) CAN communication terminal H A24-12 (SP1) Speedometer signal A24-13 (D/G) Diagnosis tester serial communication A24-16 (STPO) Stop light operation relay A24-17 (FR-) Front speed sensor RH input A24-18 (FL+) Front speed sensor LH power supply output A24-19 (RR-) Rear speed sensor RH input A24-20 (RL+) Rear speed sensor LH power supply output A24-21 (TRM2) CRAWL speed selector switch A24-24 (TS) Sensor test terminal (Signal check switch) A24-25 (CANL) CAN communication terminal L A24-27 (EXI) Center differential lock switch A24-28 (PKB) Parking brake input A24-30 (BZ) Skid control buzzer A24-31 (+BS) Power supply for solenoid A24-32 (GND2) Skid control ECU ground A24-41 (LBL) Brake fluid level warning switch A24-42 (WFSE) Write flash enable input A24-43 (CSW) VSC OFF switch A24-44 (TRM1) CRAWL speed selector switch A24-45 (STP2) Stop light switch A24-46 (IG1) IG1 power supply ECU CONNECTOR TERMINAL REFERENCETerminal No. (Symbol) Terminal Description A25-1 (IG2) IG2 power supply A25-2 (+BM2) Power supply for motor A25-4 (GND3) Skid control ECU ground - TERMINAL INSPECTIONΒ
Disconnect the connector and measure the voltage or resistance on the wire harness side.
HINT:
Voltage cannot be measured with the connector connected to the skid control ECU as the connector is watertight.
ECU CONNECTOR TERMINAL REFERENCETerminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A24-2 (+BM1) - Body ground B Power supply for motor (From battery) Always 11 to 14 V A24-16 (STPO) - Body ground R - Y Stop light operation relay Engine switch off β on (IG) Below 1 V β 11 to 14 V A24-28 (PKB) - Body ground Y-R Parking brake input Parking brake switch on β off (Parking brake lever pulled β released) Below 1 Ξ© β 10 kΞ© or higher A24-31 (+BS) - Body ground W Power supply for solenoid (From battery) Always 11 to 14 V A24-41 (LBL) - Body ground BR-Y Brake fluid level warning switch Brake fluid level +/-5 mm (+/-0.197 in.) from the minimum level β maximum level Below 1 Ξ© β 1.9 to 2.1 kΞ© A24-43 (CSW) - Body ground G-W VSC OFF switch input VSC OFF switch off β on 10 kΞ© or higher β Below 1 Ξ© A24-45 (STP2) - Body ground R Stop light switch Stop light switch on β off (Brake pedal depressed β released) 8 to 14 V β Below 1.5 V A24-46 (IG1) - Body ground G IG1 power supply Engine switch off β on (IG) Below 1 V β 11 to 14 V A25-1 (IG2) - Body ground B IG2 power supply Engine switch off β on (IG) Below 1 V β 11 to 14 V A25-2 (+BM2) - Body ground B Power supply for motor (From battery) Always 11 to 14 V A24-1 (GND1) - Body ground W-B Ground Always Below 1 Ξ© A24-32 (GND2) - Body ground W-B Ground Always Below 1 Ξ© A25-4 (GND3) - Body ground W-B Ground Always Below 1 Ξ©
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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