Brake Control Warning Light Remains ON [08/2013 - ]: Procedure

1. Check if CAN communication system DTCs are output. Refer to DIAGNOSIS SYSTEM [08/2013 - ] .

   Result

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

B → See step   6 

A: Go to next step 

1. Check if the skid control ECU (brake booster with master cylinder assembly) connector is securely connected.

   OK

   The connector is securely connected.

NG → CONNECT CONNECTOR TO BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY CORRECTLY 

OK: Go to next step 

1. Check the auxiliary battery voltage.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   Auxiliary battery	Power switch on (IG)	11 to 14 V
   Auxiliary battery	Power switch on (READY)	11 to 15.5 V

NG → CHARGE OR REPLACE AUXILIARY BATTERY 

OK: Go to next step 

1. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to DATA LIST / ACTIVE TEST [08/2013 - ] .
2. Check the combination meter assembly.

   OK

   The brake warning light / yellow (minor malfunction) turns on or off in accordance with Techstream operation.

   HINT: 

   If troubleshooting has been carried out according to Problem Symptoms Table refer back to the table and proceed to the next step before replacing the part. Refer to PROBLEM SYMPTOMS TABLE [08/2013 - ] .

NG → See step   7 

OK → See step   5