Terminals Of Ecu
- TERMINALS OF ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TERMINAL REFERENCE CHARTTerminal No. (Symbol) Terminal Description 1 (GND1) Skid control ECU ground 4 (RL-) Rear wheel speed LH (-) signal input 5 (RL+) Rear wheel speed LH (+) signal input 6 (FR-) Front wheel speed RH (-) signal input 7 (FR+) Front wheel speed RH (+) signal input 12 (+BS) Solenoid relay power supply 13 (GND2) Pump motor ground 14 (CANL) CAN communication line L 16 (RR-) Rear wheel speed RH (-) signal input 17 (RR+) Rear wheel speed RH (+) signal input 18 (FL-) Front wheel speed LH (-) signal input 19 (FL+) Front wheel speed LH (+) signal input 22 (SP1) Speed signal output for speedometer 24 (+BM) Motor relay power supply 25 (CANH) CAN communication line H 28 (STP) Stop light switch input 32 (TS) Sensor check input 34 (IG1) ECU power supply - TERMINAL INSPECTION
- Disconnect the connector and measure the voltage or resistance on the wire harness side.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
HINT:
Voltage cannot be measured with the connector connected to the skid control ECU as the connector is watertight.
Standard
TERMINAL REFERENCE CHARTTerminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A51-1 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω A51-12 (+BS) - Body ground W - Body ground Solenoid relay power supply Always 11 to 14 V A51-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω A51-24 (+BM) - Body ground L - Body ground Motor relay power supply Always 11 to 14 V A51-28 (STP) - Body ground L-W - Body ground Stop light switch input Stop light switch ON → OFF (Brake pedal depressed → released) 8 to 14 V → Below 1.5 V A51-34 (IG1) - Body ground L-B - Body ground ECU power supply Ignition switch ON 11 to 14 V - Disconnect the connector and measure the voltage or resistance on the wire harness side.