DESCRIPTION The hybrid vehicle control ECU sends signals such as dynamic radar cruise control operation signals, brake operation demand signals and buzzer operation demand signals to the skid control ECU (brake booster with master cylinder assembly) when the dynamic radar cruise control is operating. Therefore, if the skid control ECU (brake booster with master cylinder assembly) detects a communication error with the hybrid vehicle control ECU, it sends a malfunction signal back to the hybrid vehicle control ECU.
CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Using the Techstream, check if the CAN communication system is functioning normally. Click here
(a) Clear the DTCs. Powertrain > Radar Cruise1 > Clear DTCs(b) Make sure that the DTC detection conditions are met. HINT: If the detection conditions are not met, the system cannot detect the malfunction. (c) Check for DTCs. Powertrain > Radar Cruise1 > Trouble Codes
(a) Replace the hybrid vehicle control ECU. Click here
(a) Clear the DTCs. Powertrain > Radar Cruise1 > Clear DTCs(b) Make sure that the DTC detection conditions are met. HINT: If the detection conditions are not met, the system cannot detect the malfunction. (c) Check for DTCs. Powertrain > Radar Cruise1 > Trouble Codes
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Navigation System(for Gasoline Model): Speaker Circuit
DESCRIPTION If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers. Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, DCM (telematics transceiver)* or speaker ...