TRAC OFF Indicator 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   10 

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. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the Data List on the Techstream. Refer to DATA LIST / ACTIVE TEST [08/2013 - ] .
   ABS/VSC/TRAC
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   TRAC/VSC Off Mode	TR(A)C/VSC off mode / Normal, TRC OFF, Unknown or VSC OFF	Normal: Normal mode TRC OFF: TR(A)C off mode Unknown: Unspecified VSC OFF: VSC off mode	-

4. Using the Techstream, check that the switch condition on the Techstream changes according to VSC OFF switch (integration control and panel assembly) operation.

   OK

   The Techstream display changes according to VSC OFF switch (integration control and panel assembly) operation.

NG → See step   6 

OK: Go to next step 

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

   OK

   The multi-information display 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   9 

OK → See step   8 

1. Turn the power switch off.
2. Inspect the VSC OFF switch (integration control and panel assembly). Refer to INSPECTION [08/2013 - ] .

   OK

   The VSC OFF switch (integration control and panel assembly) is normal.

NG → See step   11 

OK: Go to next step 

1. Disconnect the A24 skid control ECU (brake booster with master cylinder assembly) connector.
2. Disconnect the H71 VSC OFF switch (integration control and panel assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A24-8 (CSW) - H71-7 (+)	Always	Below 1 Ω
   A24-8 (CSW) - Body ground	Always	10 kΩ or higher
   H71-5 (E) - Body ground	Always	Below 1 Ω

   HINT: 

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   8