Toyota Camry (XV70): Diagnosis System
Toyota Camry Repair Manual XV70 (2018-2024) / Engine, Hybrid System / Cruise Control / Front Radar Sensor System / Diagnosis System
DIAGNOSIS SYSTEM
DIAGNOSIS FUNCTION
(a) If a malfunction is detected in the millimeter wave radar sensor assembly, the millimeter wave radar sensor assembly stores DTCs without directly informing the driver, and sends malfunction signals to the systems that use the millimeter wave radar sensor assembly.
Those systems then notify the driver.
HINT:
Refer to "HOW TO PROCEED WITH TROUBLESHOOTING" when troubleshooting for the Pre-collision System.
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Dtc Check / Clear
DTC CHECK / CLEAR CHECK FOR DTC (a) Check for DTCs (Test Failed / Pending / Confirmed). Body Electrical > Front Radar Sensor > Trouble Codes
Techstream Display Description
Test F
Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) Whenever a front radar sensor system DTC is stored, the millimeter wave radar sensor assembly stores the current vehicle state as Freeze Frame Data.
CHECK FREEZE FR
Fail-safe Chart
FAIL-SAFE CHART FAIL-SAFE FUNCTION (a) If a malfunction is detected in the front radar sensor system, a message is displayed on the multi-information display and systems related to the malfunction are
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Open in Bus 2 Main Bus Line
DESCRIPTION There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher.
Symptom Trouble Area
Resistance between terminals 18 (CA4H) and 17 (CA4L) o
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the susp
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