Inspection Procedure

1. Check if a CAN communication system DTC is output (See DIAGNOSIS SYSTEM ).

   Result 

   RESULT REFERENCE
   
   

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

B: INSPECT CAN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: Go to next step 

1. Check if a multiplex communication system DTC is output (See DIAGNOSTIC TROUBLE CODE CHART )

   Result 

   RESULT REFERENCE
   
   

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

B: INSPECT MULTIPLEX COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

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  (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )

OK: Go to next step 

1. Check the battery voltage

   Standard Voltage: 

   11 to 14 V 

NG: CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 2UR-GSE)  (See ON-VEHICLE INSPECTION )

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Select the Data List mode on the Techstream (See DATA LIST / ACTIVE TEST  ).

   ABS/VSC/TRAC 

   NORMAL CONDITION
   
   

   Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
   TRAC/VSC Off Mode	VSC OFF switch / NORMAL, TRC OFF or VSC OFF	NORMAL Normal mode TRC OFF TRAC 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: Go to 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 (See DATA LIST / ACTIVE TEST ).
3. Check the combination meter

   OK: The VSC OFF indicator light 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 (See PROBLEM SYMPTOMS TABLE  )

NG: REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL )

OK: REPLACE SKID CONTROL ECU  (See REMOVAL  )

1. Turn the engine switch off
2. Disconnect the VSC OFF switch connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

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

Fig 1: Identifying VSC OFF Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE VSC OFF SWITCH  (See REMOVAL  )

OK: Go to next step 

1. Disconnect the skid control ECU connector
2. Measure the resistance according to the value(s) in the table below

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   J77-7 (CSW) - J37-3 (+)	Always	Below 1 Ω
   J77-7 (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 (See PROBLEM SYMPTOMS TABLE  )

Fig 2: Identifying Harness And Connector (Skid Control ECU - VSC OFF Switch)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE SKID CONTROL ECU  (See REMOVAL  )