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Home >> Toyota >> 2015 >> Corolla S, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (Dynamic Radar Cruise Control System - Diagnostics - Introduction (Model Code: ZRE172)) >> Dynamic Radar Cruise Control System >> Diagnosis System [08/2016 - ] >> Diagnosis System [08/2016 - ]
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Diagnosis System [08/2016 - ]

WARNING: This page is about a different car, the 2019 Toyota Corolla, 2018 Toyota Corolla, and 2017 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. DIAGNOSIS FUNCTION 
    1. The diagnosis function turns off the cruise control indicator, illuminates the master warning light and displays a warning message when a malfunction is detected. When a malfunction is detected in the dynamic radar cruise control system, DTCs are stored in the ECM or driving support ECU assembly.
      Fig 1: Dynamic Radar Cruise Control System Icons
      GTY681778Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Cruise Control Indicator
      (Constant Speed Control Mode)
      *2 Cruise Control Indicator
      (Vehicle-to-vehicle Distance Control Mode)
      *3 Master Warning Light
      NOTE:
      • If DTCs related to the communication system are stored, "Cruise Control Malfunction Visit Your Dealer", which is displayed in the combination meter assembly, disappears when the system returns to normal.
      • If DTCs not related to the communication system are stored, "Cruise Control Malfunction Visit Your Dealer", which is displayed in the combination meter assembly, disappears when the ignition switch is turned off then back to ON after the system returns to normal.
  2. DESCRIPTION 
    1. The ECM and driving support ECU assembly controls the dynamic radar cruise control system of the vehicle. The data and DTCs relating to the dynamic radar cruise control system can be read from the DLC3 of the vehicle. Use the Techstream to check and solve the problem.
  3. CHECK DLC3 
    1. Check the DLC3.

      Refer to GENERAL INFORMATION [08/2013 - ]

  4. CHECK INDICATOR 
    1. Turn the ignition switch to ON
    2. Check that the cruise control indicator illuminates when the dynamic radar cruise control system is turned on using the cruise control main switch (ON/OFF button), and that the indicator turns off when the dynamic radar cruise control system is turned off using the cruise control main switch (ON/OFF button).
      Fig 2: Dynamic Radar Cruise Control System Icons
      GTY679425Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Cruise Control Indicator
      (Constant Speed Control Mode)
      *2 Cruise Control Indicator
      (Vehicle-to-vehicle Distance Control Mode)
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