BLIND SPOT MONITOR SYSTEM Main Switch Circuit

DESCRIPTION

When the blind spot monitor main switch (combination switch assembly) is turned on, a signal is sent to the blind spot monitor sensor LH and the blind spot monitor indicator on the blind spot monitor main switch (combination switch assembly) illuminates. The blind spot monitor system operates according to this signal.

WIRING DIAGRAM

B002IWYE02

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CHECK BLIND SPOT MONITOR MAIN SWITCH (COMBINATION SWITCH ASSEMBLY)


    1. Check that the blind spot monitor indicator on the blind spot monitor main switch (combination switch assembly) illuminates normally when the blind spot monitor main switch (combination switch assembly) is turned from off to on.

    2. Check that the blind spot monitor indicator on the blind spot monitor main switch (combination switch assembly) turns off normally when the blind spot monitor main switch (combination switch assembly) is turned from on to off.

      OK
      The blind spot monitor indicator operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Blind Spot Monitor Master / Data List.

    5. According to the display on GTS, read the Data List.

      Click here


      Body Electrical > Blind Spot Monitor Master > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Main Switch State of the blind spot monitor main switch (combination switch assembly) OFF or ON

      OFF: Blind spot monitor main switch (combination switch assembly) off

      ON: Blind spot monitor main switch (combination switch assembly) on

      		 -
      Main Switch Indicator Status State of the blind spot monitor indicator on the blind spot monitor main switch (combination switch assembly) OFF or ON

      OFF: Indicator not illuminated

      ON: Indicator illuminated

      		 -

      Body Electrical > Blind Spot Monitor Master > Data List
      Tester Display
      Main Switch
      Main Switch Indicator Status
      Result
      Result Proceed to
      The status of "Main Switch" and "Main Switch Indicator Status" change as shown above when the blind spot monitor main switch (combination switch assembly) is operated. A
      The status of "Main Switch" does not change as shown above when the blind spot monitor main switch (combination switch assembly) is operated. B
      The status of "Main Switch Indicator Status" changes as shown above when the blind spot monitor main switch (combination switch assembly) is operated. C

    A

    REPLACE BLIND SPOT MONITOR MAIN SWITCH (COMBINATION SWITCH ASSEMBLY) Click here

    C

    INSPECT BLIND SPOT MONITOR MAIN SWITCH (COMBINATION SWITCH ASSEMBLY) Click here

    B

  3. CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH ASSEMBLY - BATTERY)


    1. B002IBHC01
      *a

      Front view of wire harness connector

      (to Blind Spot Monitor Main Switch [Combination Switch Assembly])

      Disconnect the blind spot monitor main switch (combination switch assembly) connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I33-5 (B) - Body ground Power switch on (IG) 11 to 14 V
      I33-5 (B) - Body ground Power switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT BLIND SPOT MONITOR MAIN SWITCH (COMBINATION SWITCH ASSEMBLY)


    1. Remove the blind spot monitor main switch (combination switch assembly).

      Click here

    2. Inspect the blind spot monitor main switch (combination switch assembly).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BLIND SPOT MONITOR MAIN SWITCH (COMBINATION SWITCH ASSEMBLY) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR MAIN SWITCH [COMBINATION SWITCH ASSEMBLY] - BLIND SPOT MONITOR SENSOR LH)


    1. Disconnect the V1 blind spot monitor sensor LH connector.

    2. Disconnect the I33 blind spot monitor main switch (combination switch assembly) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      V1-8 (BSSW) - I33-15 (D) Always Below 1 Ω
      V1-8 (BSSW) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BLIND SPOT MONITOR SENSOR LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT BLIND SPOT MONITOR MAIN SWITCH (COMBINATION SWITCH ASSEMBLY)


    1. Remove the blind spot monitor main switch (combination switch assembly).

      Click here

    2. Inspect the blind spot monitor main switch (combination switch assembly).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BLIND SPOT MONITOR MAIN SWITCH (COMBINATION SWITCH ASSEMBLY) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR MAIN SWITCH [COMBINATION SWITCH ASSEMBLY] - BLIND SPOT MONITOR SENSOR LH)


    1. Disconnect the V1 blind spot monitor sensor LH connector.

    2. Disconnect the I33 blind spot monitor main switch (combination switch assembly) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      V1-3 (BIND) - I33-11 (E) Always Below 1 Ω
      V1-3 (BIND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BLIND SPOT MONITOR SENSOR LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR