Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM1000000018WT0 |
Model Year Start: 2018 |
Model: Sienna |
Prod Date Range: [11/2017 -
] |
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: Cruise Main Indicator Light Circuit; 2018 - 2020 MY Sienna [11/2017 - ] |
Cruise Main Indicator Light Circuit
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DESCRIPTION
When the cruise control main switch is turned on, the cruise main indicator and "Radar Ready" come on. This indicates the control condition (presence or absence of a vehicle in front, vehicle-to-vehicle distance, and set vehicle speed) and fail-safe state through the CAN communication system. The master warning light and cruise main indicator come on and vehicle-to-vehicle distance information is displayed on the combination meter assembly as the alarm buzzer sounds. Items such as "Dynamic Radar Cruise Sensor Needs Cleaning", "Dynamic Radar Cruise Not Available" and "Check Cruise Control System" are displayed on the multi-information display on the combination meter assembly when the ECM detects signals from each sensor and actuator and sends them to the combination meter assembly via CAN.
HINT:
If the vehicle in front in the same lane significantly decreases vehicle speed or another vehicle moves in front of your vehicle, adequate deceleration cannot be applied and the vehicle-to-vehicle distance will shorten. At this time, the system sounds the buzzer to warn the driver. Each indicator in the dynamic radar cruise control uses CAN for communication. Therefore, if there are any malfunctions in this circuit, check for DTCs in the CAN communication system before troubleshooting this circuit.
CAUTION / NOTICE / HINT
PROCEDURE
1.
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PERFORM ACTIVE TEST USING TECHSTREAM (METER DISPLAY1)
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(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(e) Check the cruise main indicator by performing the Active Test.
Combination Meter
Tester Display
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Measurement Item
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Control Range
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Diagnostic Note
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Meter Display 1
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Multi-information display
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OFF, 6, 5, 4, 3, 2, 1, 0, All
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-
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Result:
Result
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Proceed to
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The multi-information display in the combination meter assembly turns on or off according to the operation of the Active Test.
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A
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The multi-information display in the combination meter assembly does not turn on or off according to the operation of the Active Test.
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B
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A
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2.
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READ VALUE USING TECHSTREAM (CRUISE READY MAIN-CPU, CRUISE READY SUB-CPU, CRUISE INDICATOR)
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(a) Enter the following menus: Powertrain / Radar Cruise1 / Data List.
(b) Read the Data List according to the display on the Techstream.
Powertrain > Radar Cruise1 > Data List
Tester Display
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Measurement Item/Range
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Normal Condition
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Diagnostic Note
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Cruise Ready Main-CPU
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Cruise control system standby condition/ON or OFF
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Each time cruise control main switch (ON/OFF button) is pushed, ON or OFF changes
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-
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Cruise Ready Sub-CPU
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Cruise control system standby condition/ON or OFF
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Each time cruise control main switch (ON/OFF button) is pushed, ON or OFF changes
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-
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Cruise Indicator
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Cruise control indicator status/ON or OFF
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ON: Cruise control indicator illuminates
OFF: Cruise control indicator turns off
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-
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Result:
Result
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Proceed to
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The cruise control indicator illuminates and turns off according to the operation of the cruise control main switch (ON/OFF button).
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A
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The cruise control indicator does not illuminate but the Data List item Cruise Indicator changes according to the operation of the cruise control main switch (ON/OFF button).
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B
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The cruise control indicator does not illuminate and the Data List item Cruise Indicator does not change according to the operation of the cruise control main switch (ON/OFF button).
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C
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