FixVault
Home › Lexus › 2007 › RX 400h AWD › Repair and Diagnosis › External Pages › Different car › Section 305 (Lighting) › Lighting System › Stop Light Switch Circuit › Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT FUSE (STOP) 
    1. Remove the STOP fuse from the No. 2 engine room relay block.
    2. Measure the resistance according value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      STOP fuse Always Below 1 Ω
    3. Reinstall the STOP fuse.

    NG: REPLACE FUSE 

    OK: Go to next step. 

  2. INSPECT BULB (REAR STOP LIGHT BULB) 
    1. Remove the rear stop light bulbs.
      Fig 1: Identifying Rear Stop Light Bulbs Connector Terminals
      G05113514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the high mounted stop light assembly.
      3. Fig 2: Identifying High Mounted Stop Light Connector Terminals
      G05113515Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Apply battery voltage to the terminals and check that the rear stop light and high mounted stop light illuminates.

      OK 

      Rear stop light 

      REAR STOP LIGHT

      Measurement Condition Specified Condition
      Positive battery - Terminal 3
      Negative battery - Terminal 1      		 Stop light bulb illuminates

      High mounted stop light 

      HIGH MOUNTED STOP LIGHT

      Measurement Condition Specified Condition
      Positive battery - Terminal 2
      Negative battery - Terminal 1      		 High mounted stop light illuminates
    4. Reinstall the rear stop light bulbs.
    5. Reinstall the high mounted stop light assembly.

      Result 

      RESULT REFERENCE

      Result Proceed to
      OK A
      NG (Rear stop light) B
      NG (High mounted stop light) C

    B: REPLACE BULB  (See REMOVAL  )

    C: REPLACE HIGH MOUNTED STOP LIGHT ASSEMBLY  (See REMOVAL  )

    A: Go to next step. 

  3. INSPECT STOP LIGHT SWITCH 
    1. Remove the stop light switch.
      2. Fig 3: Identifying Stop Light Switch
      G04832662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1 - 2 Switch pin released Below 1 Ω
      3 - 4 Switch pin pushed in 10 kΩ or higher
      1 - 2 Switch pin pushed in 10 kΩ or higher
      3 - 4 Switch pin released Below 1 Ω
    3. Reinstall the stop light switch.

    NG: REPLACE STOP LIGHT SWITCH  (See REMOVAL  )

    OK: Go to next step. 

  4. INSPECT STOP LP CTRL RELAY 
    1. Remove the STOP LP CTRL relay from the No. 2 engine room relay block.
      2. Fig 4: Identifying STOP LP CTRL Relay And Engine Room R/B No.2
      G05113517Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      3 - 4 Voltage is not applied between terminals 1 and 2 Below 1 Ω
      3 - 5 Voltage is not applied between terminals 1 and 2 10 kΩ or higher
      3 - 4 Apply the battery voltage between terminals 1 and 2 10 kΩ or higher
      3 - 5 Apply the battery voltage between terminals 1 and 2 Below 1 Ω
    3. Reinstall the STOP LP CTRL relay.

    NG: REPLACE STOP LP CTRL RELAY 

    OK: Go to next step. 

  5. CHECK HARNESS AND CONNECTOR (FUSE - STOP LIGHT SWITCH) 
    1. Disconnect the A3 stop light switch connector.
      2. Fig 5: Identifying A3 Stop Light Switch Connector
      G05580477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according value(s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE

      Tester Connection Condition Specified Condition
      A3-2 - Body ground Always 11 to 14 V
    3. Reconnect the stop light switch connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step. 

  6. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - STOP LIGHT CONTROL RELAY) 
    1. Disconnect the A3 stop light switch connector.
      2. Fig 6: Identifying A3 Stop Light Switch And Stop Light Control Relay
      G05580478Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the STOP LP CTRL relay from the No. 2 engine room relay block.
    3. Measure the resistance according value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      A3-1 - STOP LP CTRL relay terminal 4 Always Below 1 Ω
      A3-1 or STOP LP CTRL relay terminal 4 - Body ground Always 10 kΩ or higher
    4. Reconnect the stop light switch connector.
    5. Reinstall the STOP LP CTRL relay.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step. 

  7. CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - REAR STOP LIGHT) 
    1. Remove the STOP LP CTRL relay from the No. 2 engine room relay block.
    2. Disconnect the L11 and L14 rear stop light connectors.
    3. Disconnect the T1 high mounted stop light connector.
    4. Measure the resistance according value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      STOP LP CTRL relay terminal 3 - L11-3 Always Below 1 Ω
      STOP LP CTRL relay terminal 3 - L14-3 Always Below 1 Ω
      STOP LP CTRL relay terminal 3 - T1-2 Always Below 1 Ω
      STOP LP CTRL relay terminal 3 - Body ground Always 10 kΩ or higher
      Fig 7: Checking Harness And Connector (Stop Light Control Relay - Rear Stop Light)
      G05580479Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Reinstall the STOP LP CTRL relay.
    6. Reconnect the stop light connectors.
    7. Reconnect the high mounted stop light connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (REAR STOP LIGHT - BODY GROUND) 

About FixVault