Inspection Procedure

1. Check that the stop light comes on when the brake pedal is depressed and goes off when the brake pedal is released.

   OK: 

   Stop light switch function is normal. 

   HINT:

   Check the stop light bulb as it may have burnt out.

NG:  Go to step  3

OK: Go to next step 

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

   Standard voltage 

   VOLTAGE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   S1-27 (STP) - Body ground	Brake pedal depressed	8 to 14 V
   S1-27 (STP) - Body ground	Brake pedal released	Below 1 V

NG:  Go to step  4

OK: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

1. Disconnect the stop light switch connector.
Fig 2: Identifying Stop Light Switch
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	Condition	Specified Condition
   1 - 2	Switch pin free	Below 1 Ω
   1 - 2	Switch pin pushed	10 kΩ or higher

NG: REPLACE STOP LIGHT SWITCH 

OK: Go to next step 

1. Disconnect the stop light switch connector and skid control ECU connector.
Fig 3: Identifying Stop Light Switch And Skid Control ECU 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
   S1-27 (STP) - S7-1 (STP)	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
   S1-27 (STP) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY