DTC C1A4B: Stop Light Relay Circuit [11/2018 - ]: Procedure

1. Using the Techstream, check for DTCs according to the prompts on the screen.

   HINT: 

   After turning the power switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

   Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

2. Clear the DTCs according to the screen on the Techstream.

   Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs 

3. Recheck for DTCs.

   Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

   HINT: 

   • DTC C1A4B is stored when a malfunction signal sent from the electronically controlled brake system is detected.
   • If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1A4B will not be output again.
   • If DTC C1A4B is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

     Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]

   Result

   Result	Proceed to
   DTC C1A4B is output	A
   DTC C1A4B is not output	B

Result: 

A 

GO TO PRE-COLLISION SYSTEM. Refer to  DTC C1425-71: Stop Light Relay Actuator Stuck [11/2018 - ] 

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]