INSPECTION PROCEDURE 1. INSPECT INNER REAR VIEW MIRROR ASSEMBLY (w/o Garage Door Opener System) (a) Inspect the operation of the electrochromic inner rear view mirror assembly. 
(1) Connect a positive (+) lead from the auxiliary battery to terminal 1 and a negative (-) lead to terminal 2. (2) Press the AUTO switch. (3) Attach black colored tape to the forward sensor to prevent it from sensing. (4) Light up the mirror with an electric light, and check that the mirror surface changes from bright to dark. OK: Mirror surface changes from bright to dark. (5) Measure the voltage according to the value(s) in the table below. Standard Voltage:
If the result is not as specified, replace the inner rear view mirror assembly. 2. INSPECT INNER REAR VIEW MIRROR ASSEMBLY (w/ Garage Door Opener System) (a) Inspect the operation of the electrochromic inner rear view mirror assembly. 
(1) Connect a positive (+) lead from the auxiliary battery to terminal 1 and a negative (-) lead to terminal 2. (2) Press the EC switch. (3) Attach black colored tape to the forward sensor to prevent it from sensing. (4) Light up the mirror with an electric light, and check that the mirror surface changes from bright to dark. OK: Mirror surface changes from bright to dark. (5) Measure the voltage according to the value(s) in the table below. Standard Voltage:
If the result is not as specified, replace the inner rear view mirror assembly. |
Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Hybrid Control System: Inverter Low-voltage Circuit
DESCRIPTION The cause of the malfunction may be the low-voltage circuit. Check whether there is an open circuit in the inverter +B low-voltage power source system or a problem in the communication between the hybrid vehicle control ECU and inverter. Related Parts Check Area Inspection Inverter +B lo ...
