Brake Control Warning Light Remains ON [03/2017 - ]: Procedure

1. Check if CAN communication system DTCs are output.

   Refer to DIAGNOSTIC TROUBLE CODE CHART [03/2017 - 05/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [05/2023 - ]

   Result

   Result	Proceed to
   DTCs are not output.	A
   DTCs are output.	B

Result: 

B 

INSPECT CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 05/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2023 - ] 

Result: 

A 

See step  2

1. Check if the skid control ECU assembly connector is securely connected.

   OK

   The connector is securely connected.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CONNECT CONNECTOR TO SKID CONTROL ECU ASSEMBLY CORRECTLY 

Result: 

OK 

See step  3

1. Check the battery voltage.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   Battery	Engine switch off	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CHARGE OR REPLACE BATTERY 

Result: 

OK 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Select the Data List on the Techstream.

   Refer to DATA LIST / ACTIVE TEST [03/2017 - 05/2023] , or refer to DATA LIST / ACTIVE TEST [05/2023 - ]

   Chassis > ABS/VSC/TRAC > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   ECB Warning Light	Brake warning light / yellow (minor malfunction)	ON or OFF	ON: Warning light on OFF: Warning light off	ECB: Electronically Controlled Brake System

   Chassis > ABS/VSC/TRAC > Data List 

   Tester Display
   ECB Warning Light

   ECB: Electronically Controlled Brake System

4. Check the Techstream display condition of the brake warning light / yellow (minor malfunction).

   Result

   Result	Proceed to
   OFF is displayed.	A
   ON is displayed.	B

Result: 

A 

INSPECT METER / GAUGE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ] 

Result: 

B 

REPLACE SKID CONTROL ECU ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023]  , or refer to  REMOVAL [05/2023 - ]