Inspection Procedure

1. Check for DTCs (See DTC CHECK/CLEAR  ).

   Result 

   RESULT REFERENCE
   
   

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

B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC  (See DIAGNOSTIC TROUBLE CODE CHART  )

A: Go to Next Step 

1. Check the skid control ECU connector connection.

   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 

NG: GO TO CHARGING SYSTEM (ON-VEHICLE INSPECTION)  (See ON-VEHICLE INSPECTION )

OK: Go to Next Step 

1. Disconnect the A24 skid control ECU connector.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage 

   STANDARD VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A24-27 (EXI) - Body ground	Center differential free (Center differential lock switch off) (Center differential lock detection switch off)	11 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 1: Identifying Skid Control ECU (EXI Terminal)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and the Techstream on.
4. Select "CAN Bus Check" from the System Selection Menu screen, and follow the prompts on the screen to inspect the CAN Bus.

   OK: "CAN Bus Check" indicates no malfunctions in CAN communication. 

NG: GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)  (See HOW TO PROCEED WITH TROUBLESHOOTING )

OK: Go to Next Step 

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and the Techstream on.
4. Check for DTCs (See HOW TO PROCEED WITH TROUBLESHOOTING ).

   Result 

   RESULT REFERENCE
   
   

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

B: GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART)  (See DIAGNOSTIC TROUBLE CODE CHART )

A: Go to Next Step 

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
5. Check the condition of the VSC OFF indicator by operating the Techstream.

   Combination Meter 

   ACTIVE TEST - COMBINATION METER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Indicat. Lamp VSC OFF	VSC OFF Indicator	Indicator ON/OFF	-

   OK: The indicator turns on/off when operating the Techstream. 

NG: REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL )

OK: REPLACE MASTER CYLINDER SOLENOID  (See DISASSEMBLY )