Inspection Procedure

1. Connect the intelligent tester (with CAN VIM) to the DLC3.
2. Turn the power switch ON (IG) and press the intelligent tester main switch ON.
3. Read the DATA LIST according to the displays on the tester.

   Power source control ECU 

   ITEM NORMAL CONDITION CHART
   
   

   Item	Measurement Item / Range (Display)	Normal Condition	Diagnostic Note
   STOP LAMP SW1	Stop light switch 1 / ON or OFF	ON: Brake pedal depressed OFF: Brake pedal released	-

   OK : ON (brake pedal depressed) appears on the screen. 

OK : REPLACE POWER SOURCE CONTROL ECU 

NG : GO TO NEXT STEP 

1. Disconnect the S16 switch connector.
2. Disconnect the P6 ECU connector.
3. Measure the resistance and voltage of the wire harness side connectors.

   Standard resistance 

   RESISTANCE TESTER CONNECTION SPECIFICATION
   
   

   Tester Connection	Specified Condition
   S16-1 - P6-1 (STP)	Below 1 Ω

   Standard voltage 

   VOLTAGE TESTER CONNECTION SPECIFICATION
   
   

   Tester Connection	Specified Condition
   S16-2 - Body ground	10 to 14 V

   Fig 1: Identifying Stop Light Switch Connector & Power Source Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : GO TO NEXT STEP 

1. Remove the stop light switch.
Fig 2: Inspecting Stop Light Switch Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE TESTER CONNECTION SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   1 - 2	Switch pin not pushed	Below 1 Ω
   3 - 4	Switch pin not pushed	10 kΩ or higher
   1 - 2	Switch pin pushed	10 kΩ or higher
   3 - 4	Switch pin pushed	Below 1 Ω

NG : REPLACE STOP LIGHT SWITCH ASSEMBLY 

OK : REPLACE POWER SOURCE CONTROL ECU