DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:C1A4A

DESCRIPTION

A buzzer sounds to alert the driver when the vehicle-to-vehicle distance becomes less than the set value.

PROCEDURE

1. Click here

   PERFORM ACTIVE TEST USING GTS (DSS SIGNAL BUZZER)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Chassis / ABS/VSC/TRC / Active Test / DSS Signal Buzzer.

   5. Perform the Active Test.

      Table 1. ABS/VSC/TRC

      Tester Display	Test Part	Control Range	Diagnostic Note
      DSS Signal Buzzer	Skid control buzzer	OFF or ON	Buzzer can be heard

      OK
      Skid control buzzer sounds.

   6. Turn the power switch off.

   
   
   • OKClick here
   • NG

     GO TO SKID CONTROL BUZZER CIRCUIT (Click here)

2. Click here

   CHECK FOR DTCs (DTC C1A4A)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Clear the DTCs (Click here).

   4. Perform the following to make sure that the DTC detection conditions are met.

      Tip:

      If the detection conditions are not met, the malfunction cannot be detected.

      
      

      1. Drive the vehicle at a speed for which cruise control operation is possible.

      2. Turn the cruise control switch (ON-OFF button).

      3. Push the cruise control switch to -/SET to begin control of vehicle speed using the cruise control system.

   5. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.

   6. Check for DTCs.

      Result
      Result Proceed to DTC is not output A DTC C1A4A is output B

   7. Turn the power switch off.

   
   
   • A

     USE SIMULATION METHOD TO CHECK (Click here)

   • BClick here
3. Click here

   REPLACE DRIVING SUPPORT ECU ASSEMBLY

   (Click here)

   
   
   • NEXTClick here
4. Click here

   CHECK FOR DTCs (DTC C1A4A)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Clear the DTCs (Click here).

   4. Perform the following to make sure that the DTC detection conditions are met.

      Tip:

      If the detection conditions are not met, the malfunction cannot be detected.

      
      

      1. Drive the vehicle at a speed for which cruise control operation is possible.

      2. Turn the cruise control system on using the cruise control switch (ON-OFF button).

      3. Push the cruise control switch to -/SET to begin control of vehicle speed using the cruise control system.

   5. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.

   6. Check for DTCs.

      Result
      Result Proceed to DTC is not output A DTC C1A4A is output B

   7. Turn the power switch off.

   
   
   • A

     END

   • BClick here
5. Click here

   REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

   (Click here)

   
   
   • NEXTClick here
6. Click here

   CHECK FOR DTCs (DTC C1A4A)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Clear the DTCs (Click here).

   4. Perform the following to make sure that the DTC detection conditions are met.

      Tip:

      If the detection conditions are not met, the malfunction cannot be detected.

      
      

      1. Drive the vehicle at a speed for which cruise control operation is possible.

      2. Turn the cruise control system on using the cruise control switch (ON-OFF button).

      3. Push the cruise control switch to -/SET to begin control of vehicle speed using the cruise control system.

   5. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.

   6. Check for DTCs.

      Result
      Result Proceed to DTC is not output A DTC C1A4A is output B

   7. Turn the power switch off.

   
   
   • A

     END

   • B

     REPLACE POWER MANAGEMENT CONTROL ECU (Click here)