DTC B2071: Stop Light Control Relay Malfunction: Procedure
- CHECK DTC (CAN COMMUNICATION SYSTEM)
- Use the Techstream to check if the CAN communication system is functioning normally. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
.
OK
DTC U0122 is not output.
HINT:
DTC U0122: Lost Communication with Skid Control ECU
NG → See step 5
OK: Go to next step
- Use the Techstream to check if the CAN communication system is functioning normally. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
.
- CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM)
- Using the Techstream, enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Code.
- Clear the DTCs. Refer to DTC CHECK / CLEAR .
- Check for DTCs. Refer to DTC CHECK / CLEAR
.
OK
DTC C1380 is not output.
HINT:
DTC C1380: Stop Light Control Relay Malfunction
NG → See step 6
OK: Go to next step
- CHECK DTC (PRE-COLLISION SYSTEM)
- Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Code.
- Clear the DTCs. Refer to DTC CHECK / CLEAR .
- Check for DTCs. Refer to DTC CHECK / CLEAR
.
OK
DTC B2071 is not output.
NG → See step 7
OK → See step 4
- USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
- GO TO CAN COMMUNICATION SYSTEM (DTC U0122). Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0129: Lost Communication with Brake System Control Module
- GO TO VEHICLE STABILITY CONTROL SYSTEM (DTC C1380). Refer to DTC C1380/64: Stop Light Control Relay Malfunction
- REPLACE SEAT BELT CONTROL ECU. Refer to REMOVAL