Terminals Of Ecu [11/2018 - 12/2021]
- CHECK SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
*a Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) - - - Disconnect the A39 skid control ECU (brake actuator assembly) connector.
- Measure the voltage and resistance according to the value (s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition A39-30 (+BS) - Body ground G - Body ground Parking brake motor power supply Always 11 to 14 V A39-36 (IG1) - Body ground GR - Body ground*1
V - Body ground*2IG power supply Ignition switch ON 10.5 to 16 V*1
11 to 14 V*2A39-46 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω A39-14 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω A39-2 (MRR+) - Body ground Y - Body ground Parking brake motor RH (parking brake actuator assembly RH) (+) - - A39-3 (MRR-) - Body ground L - Body ground Parking brake motor RH (parking brake actuator assembly RH) (-) - - A39-13 (MRL+) - Body ground SB - Body ground Parking brake motor LH (parking brake actuator assembly LH) (+) - - A39-12 (MRL-) - Body ground R - Body ground Parking brake motor LH (parking brake actuator assembly LH) (-) - - A39-31 (SWI1) - Body ground R - Body ground Electric parking brake switch (integration control and panel assembly) - - A39-32 (SWO1) - Body ground G - Body ground Electric parking brake switch (integration control and panel assembly) - - A39-15 (SWI2) - Body ground W - Body ground Electric parking brake switch (integration control and panel assembly) - - A39-16 (SWO2) - Body ground LG - Body ground Electric parking brake switch (integration control and panel assembly) - - A39-5 (CANH) - Body ground P - Body ground CAN communication line H - - A39-19 (CANL) - Body ground V - Body ground CAN communication line L - - *1: w/ Stop and Start System
*2: w/o Stop and Start System