Inspection Procedure

1. Is a DTC output for ABS?

   Result 

   DTC OUTPUT RESULT
   
   

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

B : REPAIR CIRCUIT INDICATED BY OUTPUT DTC 

A: Go to next step 

1. Check the ECU connector's connecting condition.

   OK: 

   The connector should be 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: INSPECT CHARGING SYSTEM 

OK: Go to next step 

1. WHEN USING TECHSTREAM:
   1. Connect Techstream to the DLC3.
   2. Start the engine.
   3. Select the Data List mode on Techstream.

      ABS/VSC/TRAC: 

      ABS/VSC/TRAC DATA LIST
      
      

      Tester Display	Measurement Item/Range	Normal Condition
      ECU IG Power Voltage	ECU power supply voltage / TOO LOW / NORMAL/TOO HIGH	TOO LOW: Less than 9.5 V NORMAL: 9.5 to 14.0 V TOO HIGH: More than 14.0 V

   4. Read the voltage condition output from the ECU displayed on Techstream.

      OK: 

      "Normal" is displayed. 

2. WHEN NOT USING TECHSTREAM:
   1. Disconnect the skid control ECU connector.
   Fig 1: Identifying Terminal IG1 Of Skid Control ECU Connector
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Turn the ignition switch to the ON position.
   3. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFIED CONDITION
      
      

      Tester Connection	Condition	Specified Condition
      S1-46 (IG1) - Body ground	IG switch ON	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) 

OK: Go to next step 

1. Disconnect the skid control ECU connector and combination meter connector.
Fig 2: Identifying Skid Control ECU And Combination Meter Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   C11-8 - S1-29 (WA)	Below 1 Ω

3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   S1-29 (WA) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the skid control ECU connector.
Fig 3: Identifying Terminal GND Of Skid Control ECU Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   S1-32 (GND1) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) 

OK: Go to next step 

1. Check combination meter assembly (See HOW TO PROCEED WITH TROUBLESHOOTING ).

NG: REPLACE COMBINATION METER ASSEMBLY 

OK: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY