Inspection Procedure

1. Turn the ignition switch to the ON position.
2. Measure the voltage.

   Standard Voltage 

   STANDARD VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   D4-13 (TC) - D4-4 (CG)	10 to 14 V

NG:  Go to step  3

Fig 1: Identifying DLC3 Terminal Voltage (TC Terminal)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go To Next Step 

1. Disconnect the skid control ECU connector.
2. Measure the resistance.

   Standard Resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   S1-21 (TC) - D4-13 (TC)	Below 1 Ω
   S1-21 (TC) - Body ground	10 kΩ or higher

3. Reconnect the skid control ECU connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying Skid Control ECU & DLC3 Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE BRAKE ACTUATOR 

1. Measure the resistance.

   Standard Resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   D4-4 (CG) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 3: Identifying DLC3 Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go To Next Step 

1. Disconnect the skid control ECU connector.
2. Measure the resistance.

   Standard Resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   S1-21 (TC) - D4-13 (TC)	Below 1 Ω
   S1 -21 (TC) - Body ground	10 kΩ or higher

3. Reconnect the skid control ECU connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 4: Identifying Skid Control ECU & DLC3 Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE BRAKE ACTUATOR