Inspection Procedure

1. Check that the stop lamp comes on while depressing the brake pedal, and goes off when releasing the brake pedal.

NG: INSPECT STOP LAMP SWITCH CIRCUIT (SEE  DTC C1249/49: OPEN CIRCUIT IN STOP LIGHT SWITCH CIRCUIT  ) 

OK: Go To Next Step. 

1. Turn the ignition switch off.
2. Disconnect the stop lamp switch assy connector.
3. Measure the resistance according to the value (s) in the table below.

Standard: 

NG: REPLACE STOP LAMP SWITCH ASSY (SEE  BRAKE PEDAL SUPPORT ASSY  ) 

Fig 1: Inspecting Stop Lamp Switch Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go To Next Step. 

1. Reconnect the stop lamp switch assy connector.
2. Disconnect the E7 connector of the ECM.
3. Turn the ignition switch to the ON position.
4. Measure the voltage according to the value (s) in the table below.

   Standard: 

   TESTER CONNECTION AND SPECIFIC CONDITION
   
   

   Tester connection	Brake pedal condition	Specification
   STP (E7-19) -Body ground	Depressed	10 to 14V
   STP (E7-19) -Body ground	Released	Below 1V

   Fig 2: Identifying ECM Connector E7

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Measure the voltage according to the value (s) in the table below.

   Standard: 

   TESTER CONNECTION SPECIFIC CONDITION
   
   

   Tester connection	Brake pedal condition	Specification
   ST1- (E7-12) -Body ground	Depressed	Below 1 V
   ST1- (E7-12) -Body ground	Released	10 to 14 V

   Fig 3: Identifying ECM Connector E7 Terminal ST1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LAMP SWITCH ASSY -ECM) 

OK: REPLACE ECM (SEE  ECM (3MZ-FE)  )