TRAC OFF Indicator Light Remains ON: Procedure

1. Check if a CAN communication system DTC is output. Refer to DIAGNOSIS SYSTEM .

   Result

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

B → See step   10 

A: Go to next step 

1. Check if a multiplex communication system DTC is output. Refer to DTC CHECK / CLEAR .

   Result

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

B → See step   11 

A: Go to next step 

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

   OK

   The connector is securely connected.

NG → CONNECT CONNECTOR TO ECU CORRECTLY 

OK: Go to next step 

1. Check the battery voltage.

   Standard Voltage

   11 to 14 V

   Result

   Result	Proceed to
   OK	A
   NG (for 2GR-FSE)	B
   NG (for 4GR-FSE)	C

C → See step   13 

B → See step   12 

A: Go to next step 

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 .
   DATA LIST
   
   

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

4. Using the Techstream, check the switch condition on the Techstream changes according to VSC OFF switch operation.

   OK

   The Techstream display changes according to VSC OFF switch operation.

NG → See step   7 

OK: Go to next step 

1. Turn the engine switch off.
2. Perform the Active Test of the combination meter (meter CPU) using the Techstream. Refer to DATA LIST / ACTIVE TEST .
3. Check the combination meter.

   OK

   The multi-information display (TR(A)C OFF indicator) turns on or off in accordance with the 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 .

NG → See step   14 

OK → See step   9 

1. Turn the engine switch off.
   Fig 1: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the VSC OFF switch connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   3 (+) - 4 (E)	Switch is pushed in	Below 1 Ω
   3 (+) - 4 (E)	Switch is not pushed in	10 kΩ or higher

NG → See step   15 

OK: Go to next step 

1. Disconnect the skid control ECU connector.
   Fig 2: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A58-30 (CSW) - J37-3 (+)	Always	Below 1 Ω
   A58-30 (CSW) - Body ground	Always	10 kΩ or higher
   J37-4 (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 .

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9