DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication. Pressing the VSC OFF switch turns off TRAC operation, and pressing and holding this switch turns off TRAC and VSC operation. If TRAC and VSC operations are turned off, the "Traction Control Turned Off" will be displayed on the multi-information display and the VSC OFF indicator light will come on. WIRING DIAGRAM  CAUTION / NOTICE / HINT NOTICE: After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory". Click here PROCEDURE
(a) Check if CAN communication system DTCs are output. Click here
(a) Check if the skid control ECU (brake booster with master cylinder assembly) connector is securely connected. OK: The connector is securely connected.
(a) Select the Data List on the Techstream. Click here
(b) Check the indicator light and mode condition on the Techstream changes according to VSC OFF switch operation. Standard:
(a) Select the Active Test on the Techstream. Click here
(b) Check the multi-information display (Traction Control Turned Off) and VSC OFF indicator light on the combination meter assembly turn on or off in accordance with Techstream operation. OK: The multi-information display (Traction Control Turned Off) and VSC OFF indicator light turn on or off in accordance with Techstream operation.
(b) Make sure that there is no looseness at the locking part and the connecting part of the connector. OK: The connector is securely connected. (c) Disconnect the G26 VSC OFF switch connector. (d) Check both the connector case and the terminals for deformation and corrosion. OK: No deformation or corrosion. (e) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector. OK: The connector is securely connected. (b) Disconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector. (c) Check both the connector case and the terminals for deformation and corrosion. OK: No deformation or corrosion. (d) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Click here
(b) Check the combination meter assembly. OK: The multi-information display and VSC OFF indicator light turn on or off in accordance with Techstream operation.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Electronically Controlled Brake System(for Hv Model): Invalid Data Received from Deceleration Sensor (C1442,C1443)
DESCRIPTION The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2). The skid control ECU (brake booster with master cylinder assembly) receives signals from the yaw rate and acceleration sensor (airbag ECU assembly) via t ...
