PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A0A

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DESCRIPTION

The driving support ECU assembly uses the millimeter wave radar sensor assembly to detect obstacles in front of the vehicle.

Based on this information, the driving support ECU assembly sends pre-crash control operation signals.

When the millimeter wave radar sensor assembly is replaced with a new one, it acquires the country specification information from the driving support ECU assembly. Also, when the driving support ECU assembly is replaced with a new one, it receives country specification information from the main body ECU (multiplex network body ECU). When country specification information in the millimeter wave radar sensor assembly, driving support ECU assembly and/or main body ECU (multiplex network body ECU) do not match, DTC C1A0A is stored.

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CAUTION / NOTICE / HINT

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PROCEDURE

1. Click here

   READ VALUE USING GTS (COUNTRY# (F RADAR SENS))

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Powertrain / Radar Cruise / Data List.

   5. Read the Data List according to the display on the GTS.

      
      
      1. Powertrain > Radar Cruise > Data List

         Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
         Country# (F Radar Sens)	Destination country for millimeter wave radar sensor assembly	JPN, NA, EURO, CA, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC or NOFIX	Actual country code	-

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         10. 
             
      
      
      1. Powertrain > Radar Cruise > Data List

         Tester Display
         Country# (F Radar Sens)

      2. 
         
         1. 
            
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         10. 
             

      Result
      Result Proceed to Country specification information for vehicle and millimeter wave radar sensor assembly match A Country specification information for vehicle and millimeter wave radar sensor assembly do not match B

   
   
   • AClick here
   • B

     REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLYClick here

2. Click here

   CHECK FOR DTCs (PRE-CRASH 2)

   
   

   1. Clear the DTCs.

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      1. Body Electrical > Pre-Crash 2 > Clear DTCs
      2. 
         
      3. 
         

   2. Make sure that the DTC detection conditions are met.

      Tip:

      If the detection conditions are not met, the system cannot detect the malfunction.

   3. Check for DTCs.

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      1. Body Electrical > Pre-Crash 2 > Trouble Codes
      2. 
         
      3. 
         
      Note:

      When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.

      Tip:

      The country specification information stored in the driving support ECU assembly is determined by the country specification information stored in the main body ECU (multiplex network body ECU). If the country specification information for the millimeter wave radar sensor assembly matches the vehicle, the country specification information for the main body ECU (multiplex network body ECU) and driving support ECU assembly is incorrect and the main body ECU (multiplex network body ECU) and driving support ECU assembly need to be replaced.

      Result
      Result Proceed to DTC C1A0A is not output A DTC C1A0A is output B

   
   
   • A

     USE SIMULATION METHOD TO CHECKClick here

   • B

     REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVING SUPPORT ECU ASSEMBLY