Terminals Of Ecu
WARNING: This page is about a different car, the 2011 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- TERMINALS OF ECU
Terminal 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.
STANDARDTerminal 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 VA51-34 (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.