DESCRIPTIONThe main body ECU (multiplex network body ECU) controls the automatic high beam system based on signals received from the forward recognition camera. WIRING DIAGRAMCAUTION / NOTICE / HINTNOTICE:
PROCEDURE
(a) Using the Techstream, check for Vehicle Control History (RoB). Body Electrical > Front Recognition Camera (Front Lighting Control) > Utility
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Chassis / Front Recognition Camera / Data List. (e) Read the Data List according to the display on the Techstream. Chassis > Front Recognition Camera > Data List
Chassis > Front Recognition Camera > Data List
OK: "Not High Temperature" is displayed on the Techstream. HINT: If "High Temperature" is displayed, move the vehicle to a cool place and allow the temperature of the forward recognition camera to decrease before continuing with troubleshooting.
(a) Check the operation of the automatic high beam indicator light. (1) Turn the engine switch on (IG). (2) Turn the light control switch to the AUTO or head position. (3) Cover the automatic light control sensor to turn the low beam headlights on. (4) Move the dimmer switch to the high position. (5) Press the auto high beam switch.
(a) Shine a light on the automatic high beam sensor. HINT: If troubleshooting is being performed in a bright area, such as outside on a sunny day, it will not be necessary to perform this step. (b) Connect the Techstream to the DLC3. (c) Turn the engine switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body Electrical / Main Body / Data List. (f) Read the Data List according to the display on the Techstream. HINT: As it may take time for the values in the Data List to change, wait at least 10 seconds before reading the Data List. Body Electrical > Main Body > Data List
Body Electrical > Main Body > Data List
OK: "Daytime" is displayed on the Techstream.
(a) Cover the automatic high beam sensor with an opaque object, such as cardboard. NOTICE:
(b) Connect the Techstream to the DLC3. (c) Turn the engine switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body Electrical / Main Body / Data List. (f) Read the Data List according to the display on the Techstream. HINT: As it may take time for the values in the Data List to change, wait at least 10 seconds before reading the Data List. Body Electrical > Main Body > Data List
Body Electrical > Main Body > Data List
OK: "Speed" is displayed on the Techstream.
(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. (e) Perform the Active Test according to the display on the Techstream. Body Electrical > Combination Meter > Active Test
Body Electrical > Combination Meter > Active Test
OK: The multi-information display in the combination meter assembly turns on according to the operation of the Active Test.
(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 / Main Body / Data List. (e) Read the Data List according to the display on the Techstream. Body Electrical > Main Body > Data List
Body Electrical > Main Body > Data List
OK: Normal conditions listed above are displayed.
(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 / Main Body / Data List. (e) Read the Data List according to the display on the Techstream. Body Electrical > Main Body > Data List
Body Electrical > Main Body > Data List
OK: "Daytime" or "Speed" is displayed on the Techstream.
(a) Remove the auto high beam switch. (b) Inspect the auto high beam switch.
(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector. (b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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