DIAGNOSIS SYSTEM DESCRIPTION (a) The DCM (Telematics Transceiver) control the vehicle safety connect system functions. Safety connect system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). In some cases, a malfunction may be occurring in the safety connect system. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs. CHECK DLC3 (a) Check the DLC3. Click here INSPECT AUXILIARY BATTERY VOLTAGE (a) Measure the battery voltage with the power switch off. Standard Voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the auxiliary battery. CHECK INDICATOR (a) When a malfunction is detected in the safety connect system, the manual (SOS) switch red indicator on the manual (SOS) switch illuminates to inform the driver of the malfunction. Click here
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Navigation System(for Gasoline Model): Noise Occurs
PROCEDURE 1. CHECK NOISE CONDITION (a) Check from which direction the noise comes (front left or right, or rear left or right). OK: The location of the noise source can be determined. NG GO TO STEP 3 OK 2. CHECK SPEAKERS (a) Check the installation condition of the speaker units that are located near ...
