DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) communicates with the hybrid vehicle control ECU and controls braking force according to the motor's regenerative force. The skid control ECU (brake booster with master cylinder assembly) sends enhanced-VSC signals to the hybrid vehicle control ECU and receives operating signals from the hybrid vehicle control ECU. The skid control ECU (brake booster with master cylinder assembly) uses CAN communication for communicating with the hybrid vehicle control ECU. If a communication malfunction is detected, the skid control ECU (brake booster with master cylinder assembly) prohibits enhanced-VSC operation, brake hold operation and part of the electronically controlled brake system control as a fail-safe function. If the signals from the hybrid vehicle control ECU return to normal, the warning light will go off and the DTCs C1259 and C1310 will be cleared. HINT: These DTCs will be output from the skid control ECU (brake booster with master cylinder assembly) when the hybrid vehicle control ECU sends a malfunction signal to the skid control ECU (brake booster with master cylinder assembly).
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 a hybrid control system DTCs are output. Click here
(a) Check if a motor generator control system DTCs are output. Click here
(a) Check if a SFI system DTCs are output. Click here
(a) Clear the DTCs. Click here (b) Turn the power switch off. (c) Turn the power switch on (IG). (d) Check if the same DTC is output. Click here
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Toyota Avalon Service & Repair Manual > Safety Connect System(for Gasoline Model): Dcm Operation History
DCM OPERATION HISTORY DCM OPERATION HISTORY This function shows the telematics network status when the DCM (Telematics Transceiver) was operated. Use this when no DTC is present but this telematics system was unable to connect to the call center. This symptom may occur if cell phone signal strength ...