Terminals Of Ecu
- TERMINALS OF ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TEXT IN ILLUSTRATION*a Component without harness connected
(Skid Control ECU [Master Cylinder Solenoid])- - Terminal No. (Symbol) Terminal Description 1 (GND1) Skid control ECU (Master cylinder solenoid) ground 2 (+BM1) Power supply for motor 3 (FR+) Front speed sensor RH power supply output 4 (FL-) Front speed sensor LH input 5 (RR+) Rear speed sensor RH power supply output 6 (RL-) Rear speed sensor LH input 7 (STP) Stop light switch 9 (CSW) VSC OFF switch 11 (CANH) CAN communication terminal H 12 (SP1) Speedometer signal 13 (ATRC) CRAWL speed selector switch 16 (STPO) BRK LP relay (Brake light relay) 17 (FR-) Front speed sensor RH input 18 (FL+) Front speed sensor LH power supply output 19 (RR-) Rear speed sensor RH input 20 (RL+) Rear speed sensor LH power supply output 21 (TRM2) CRAWL speed selector switch 24 (TS) Sensor test terminal (Signal check switch) 25 (CANL) CAN communication terminal L 27 (EXI) Center differential lock switch 29 (EXI4) Turn assist function switch signal 30 (BZ)* Skid control buzzer 31 (+BS) Power supply for solenoid 32 (GND2) Skid control ECU (Master cylinder solenoid) ground 41 (LBL) Brake fluid level warning switch 43 (TRS) CRAWL ON/OFF switch 44 (TRM1) CRAWL speed selector switch 45 (STP2) BRK LP relay (Brake light relay) 46 (IG1) IG1 power supply - *: w/ Dynamic Radar Cruise Control System
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TEXT IN ILLUSTRATION*a Component without harness connected
(Skid Control ECU [Master Cylinder Solenoid])- - Terminal No. (Symbol) Terminal Description 1 (IG2) IG2 power supply 2 (+BM2) Power supply for motor 4 (GND3) Skid control ECU (Master cylinder solenoid) ground - TERMINAL INSPECTION
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 (master cylinder solenoid) as the connector is watertight.
TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to Skid Control ECU [Master Cylinder Solenoid])- - Terminal 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 A24-7 (STP) - Body ground R Stop light switch Brake pedal depressed → released 8 to 14 V → Below 1.5 V A24-9 (CSW) - Body ground G-W VSC OFF switch input VSC OFF switch off → on 10 kΩ or higher → Below 1 Ω A24-16 (STPO) - Body ground R-Y BRK LP relay (Brake light relay) Engine switch off → on (IG) Below 1 V → 11 to 14 V 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 master cylinder reservoir sub-assembly) Brake fluid level +/-5 mm (+/-0.197 in.) from the minimum level → maximum level Below 1 Ω → 1.9 to 2.1 kΩ A24-45 (STP2) - Body ground R BRK LP relay (Brake light relay) Brake pedal depressed → released 8 to 14 V → Below 1.5 V A24-46 (IG1) - Body ground G IG1 power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V A25-1 (IG2) - Body ground B IG2 power supply Engine switch off → on (IG) Below 1 V → 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 Ω A24-32 (GND2) - Body ground W-B Ground Always Below 1 Ω A25-4 (GND3) - Body ground W-B Ground Always Below 1 Ω