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Inspection Procedure

WARNING: This page is about a different car, the 2009 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH AND COURTESY SWITCHES) 
    1. Connect the Techstream
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. Read the Data List according to the display on the Techstream.

      Main Body 

      MAIN BODY DATA LIST REFERENCE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Key Unlock Warning SW Unlock warning switch signal / ON or OFF ON: Key is in ignition key cylinder
      OFF: No key is in ignition key cylinder      		 -
      D Door Courtesy SW Driver side door courtesy light switch signal / ON or OFF ON: Driver side door is open
      OFF: Driver side door is closed      		 -
      P Door Courtesy SW Passenger side door courtesy light switch signal / ON or OFF ON: Passenger side door is open
      OFF: Passenger side door is closed      		 -

      OK: 

      The Techstream indicates ON or OFF according to the switch operation as shown in the table above. 

      Result 

      RESULT REFERENCE

      Result Proceed to
      OK A
      NG (Unlock Warning Switch) B
      NG (Front Door Courtesy Light Switch (Driver Side)) C
      NG (Front Door Courtesy Light Switch (Passenger Side)) D

      B: Go to step 2 

      C: Go to step  5

      D: Go to step  7

      A: REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) 

  2. INSPECT UNLOCK WARNING SWITCH ASSEMBLY 
    1. Remove the unlock warning switch (See REMOVAL ).
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      1 (UN+) - 2 (UN-) Pushed 10 kΩ or higher
      1 (UN+) - 2 (UN-) Not pushed Below 1 Ω

      NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY  (See REMOVAL )

      Fig 1: Inspecting Unlock Warning Switch Assembly
      G06011161Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - JUNCTION BLOCK) 
    1. Disconnect the 2E junction block connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      E5-1 (UN+) - 2E-23 (KSW) Always Below 1 Ω
      E5-1 (UN+) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      Fig 2: Identifying E5 Unlock Warning Switch And 2E Junction Block Connectors
      G06011162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      E5-2 (UN-) - Body ground Always Below 1 Ω

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      Fig 3: Identifying E5 Unlock Warning Switch Connector
      G06011163Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) 

  5. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE) 
    1. Remove the front door courtesy light switch (driver side) (See FRONT DOOR COURTESY SWITCH ).
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      1 - Switch ground Not pushed (ON) Below 1 Ω
      1 - Switch ground Pushed (OFF) 10 kΩ or higher

      NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)  (See FRONT DOOR COURTESY SWITCH )

      Fig 4: Inspecting Front Door Courtesy Light Switch Assembly (Driver Side)
      G06011164Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - JUNCTION BLOCK) 
    1. Disconnect the 2A junction block connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      L3-1 - 2A-21 (DCTY) Always Below 1 Ω
      L3-1 - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      Fig 5: Identifying L3 Front Door Courtesy Light Switch And 2A Junction Block Connectors
      G06011165Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) 

  7. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (PASSENGER SIDE) 
    1. Remove the front door courtesy light switch (passenger side) (See INSPECTION ).
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      1 - Switch ground Not pushed (ON) Below 1 Ω
      1 - Switch ground Pushed (OFF) 10 kΩ or higher

      NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (PASSENGER SIDE)  (See FRONT DOOR COURTESY SWITCH )

      Fig 6: Inspecting Front Door Courtesy Light Switch Assembly (Passenger Side)
      G06011166Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - JUNCTION BLOCK) 
    1. Disconnect the 2E junction block connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      M1-1 - 2E-20 (PCTY) Always Below 1 Ω
      M1-1 - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      Fig 7: Identifying M1 Front Door Courtesy Light Switch And 2E Junction Block Connectors
      G06011167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) 

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