Terminals Of Ecu [09/2022 - ]
- TERMINAL INSPECTION
- Disconnect the A140 skid control ECU (brake actuator assembly) connector and measure the voltage or resistance on the wire harness side.
*a Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly))- - HINT:
- Voltage cannot be measured with the connector connected to the skid control (brake actuator assembly) as the connector is watertight.
- Use the GTS to read data and perform Active Tests when inspecting the operation and communication status of the brake actuator assembly.
Refer to DATA LIST / ACTIVE TEST [09/2022 - 09/2024] , or refer to DATA LIST / ACTIVE TEST [09/2024 - ]
Terminal No. (Symbol) Terminal Description Condition Specified Condition A140-1 (GND1) - Body ground Skid control ECU (brake actuator assembly) ground 1 minute or more after disconnecting the cable from the negative (-) battery terminal Below 1 Ω A140-2 - - - A140-3 - - - A140-4 (RL-) Rear wheel speed LH (-) signal input - - A140-5 (RL+) Rear wheel speed LH (+) power supply output - - A140-6 (FR-) Front wheel speed RH (-) signal input - - A140-7 (FR+) Front wheel speed RH (+) power supply output - - A140-8 - - - A140-9 (CSW) - Body ground VSC OFF switch (combination switch assembly) input VSC OFF switch (combination switch assembly) is pushed → released Below 1 Ω → 10 kΩ or higher A140-10 - - - A140-11 (STP) - Body ground Stop light switch assembly input Stop light switch assembly on → off
(brake pedal depressed → released)8 to 14 V → Below 1.5 V A140-12 - - - A140-13 - - - A140-14 (+BS) - Body ground Solenoid relay power supply Always 11 to 14 V A140-15 - - - A140-16 (CA2H) CAN communication line H - - A140-17 (CA2L) CAN communication line L - - A140-18 (SP1) - Body ground Speed signal output for speedometer Ignition switch ON 11 to 14 V A140-19 (RR-) Rear wheel speed RH (-) signal input - - A140-20 (RR+) Rear wheel speed RH (+) power supply output - - A140-21 (FL-) Front wheel speed LH (-) signal input - - A140-22 (FL+) Front wheel speed LH (+) power supply output - - A140-23 - - - A140-24 - - - A140-25 - - - A140-26 - - - A140-27 (CANH) CAN communication line H - - A140-28 - - - A140-29 - - - A140-30 (GND2) - Body ground Pump motor ground 1 minute or more after disconnecting the cable from the negative (-) battery terminal Below 1 Ω A140-31 - - - A140-32 (STPO) - Body ground Stop light control relay (stop light switch assembly) output Ignition switch ON 11 to 14 V A140-33 - - - A140-34 - - - A140-35 - - - A140-36 - - - A140-37 (STP2) - Body ground Stop light signal input Brake pedal depressed → released 8 to 14 V → Below 1.5 V A140-38 - - - A140-39 - - - A140-40 - - - A140-41 - - - A140-42 - - - A140-43 (CANL) CAN communication line L - - A140-44 - - - A140-45 (IGR) - Body ground ECU power supply input Ignition switch ON 11 to 14 V A140-46 (BM) - Body ground Motor relay power supply Always 11 to 14 V
- Disconnect the A140 skid control ECU (brake actuator assembly) connector and measure the voltage or resistance on the wire harness side.