CHECK AT ECU TERMINALS

1.Operate the lock lever to disconnect the ABS-ECU harness connector as shown in the figure. 2.Disconnect the ABS-ECU connector, and measure the voltages between earth terminal No.13 or No.38 and each respective terminal. 3.The terminal layout is shown in the illustration. note Do not measure terminal voltage for approximately three seconds after the ignition switch is turned to the "ON" position. The ABS-ECU performs the initial check during that period. Terminal No. Terminal code Check item Checking requirements Normal condition 1 +BM Motor power supply Always Battery voltage 2-5 - - - - 6 IG1 ABS-ECU power supply(IG1) Ignition switch: "ON" Battery voltage Ignition switch: "OFF" 1 V or less 7-9 - - - - 10 CANL CAN bus line - - 11 CANH CAN bus line - - 12 - - - - 13 GND1 Earth Always 1 V or less 14-24 - - - - 25 +BV Solenoid valve power supply Always Battery voltage 26 FR- Wheel speed sensor (FR) signal Drive vehicle Approximately system voltage 27 FR+ Wheel speed sensor (FR) power supply Ignition switch: "ON" Approximately system voltage 28 - - - - 29 RL+ Wheel speed sensor (RL) power supply Ignition switch: "ON" Approximately system voltage 30 RL- Wheel speed sensor (RL) signal Drive vehicle Approximately system voltage 31, 32 - - - - 33 RR- Wheel speed sensor (RR) signal Drive vehicle Approximately system voltage 34 RR+ Wheel speed sensor (RR) power supply Ignition switch: "ON" Approximately system voltage 35 - - - - 36 FL+ Wheel speed sensor (FL) power supply Ignition switch: "ON" Approximately system voltage 37 FL- Wheel speed sensor (FL) signal Drive vehicle Approximately system voltage 38 GND2 Earth Always 1 V or less

1.Operate the lock lever to disconnect the ABS-ECU harness connector as shown in the figure. 2.Check the resistance and continuity between the terminals indicated in the table below. 3.The terminal layout is shown in the illustration. Terminal No. Signal Normal condition 13 - body earth Earth Continuity exists (2 Ω or less) 38 - body earth Earth Continuity exists (2 Ω or less)