DESCRIPTION The Malfunction Indicator Lamp (MIL) is used to indicate vehicle malfunctions detected by the ECM. The MIL operation can be checked visually. When the engine switch is first turned on (IG), the MIL should be illuminated and should then turn off after the engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the Techstream. WIRING DIAGRAM  PROCEDURE
(a) Perform troubleshooting in accordance with the table below.
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Check the communication between the Techstream and ECM. HINT: It can be checked using the "Engine" item of the Data List.
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: System Select / Health Check. (e) Check if any DTCs have been detected. Note down any DTCs.
HINT: Check for detected DTCs output from other ECUs which relate to the MIL.
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Combination Meter / Active Test / Check Engine Warning. Body Electrical > Combination Meter > Active Test
(e) Check the status of the MIL while performing the Active Test.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Air Conditioning Unit(for 2gr-fks): Reassembly
REASSEMBLY PROCEDURE 1. INSTALL NO. 1 COOLER THERMISTOR Click here 2. INSTALL NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY (a) Install the No. 1 cooler evaporator sub-assembly with No. 1 cooler thermistor to the upper heater case. (b) Engage the clamp. (c) Engage the 10 claws to install the upper heater cas ...
