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Home >> Lexus >> 2010 >> IS 350 >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Rear View Monitor System (Diagnostics) >> Rear View Monitor System >> Reverse Signal Circuit >> Inspection Procedure >> Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Procedure: Procedure

  1. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY 
    1. Disconnect the J100 connector from the display and navigation module display.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      J100-16 (REV) - Body ground Engine switch on (IG)
      Shift lever in R
      11 to 14 V
      J100-16 (REV) - Body ground Engine switch on (IG)
      Shift lever in any position except R
      Below 1 V

    NG → See step   2 

    OK → See step   9 

  2. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - MAIN BODY ECU LH) 
    1. Disconnect the Q2 connector from the main body ECU LH (cowl side junction block LH).
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J100-16 (REV) - Q2-2 (BACK) Always Below 1 Ω
      J100-16 (REV) - Body ground Always 10 kΩ or higher
    3. Proceed to the next step based on the inspection result.

      Result

      Result Proceed to
      NG A
      OK (for M/T) B
      OK (for A/T) C

    C → See step   6 

    B → See step   3 

    A → REPAIR OR REPLACE HARNESS OR CONNECTOR 

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - BACK-UP LIGHT SWITCH) 
    1. Disconnect the LJ connector from the main body ECU LH (cowl side junction block LH).
    2. Disconnect the E55 connector from the back-up light switch assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      LJ-23 (BKUP) - E55-1 Always Below 1 Ω
      LJ-23 (BKUP) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH ASSEMBLY - BATTERY) 
    1. Disconnect the E55 connector from the back-up light switch assembly.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      E55-2 - Body ground Engine switch on (IG) 11 to 14 V

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. REPLACE BACK-UP LIGHT SWITCH ASSEMBLY 
    1. Replace the back-up light switch assembly.
    2. Enter "Vehicle Signal Check Mode".

      HINT: 

      Refer to Check Vehicle Signal in Operation Check.

      Fig 1: Identifying Vehicle Signal Check Mode Screen
      GTY289776Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that the display changes between ON and OFF according to the shift lever operation.

      OK

      Condition Display
      Shift lever in R ON
      Shift lever in any position except R OFF

      HINT: 

      This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.

    NG → REPLACE MAIN BODY ECU LH (COWL SIDE JUNCTION BLOCK LH) 

    OK → END 

  6. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / ECT / Data List.
    5. According to the display on the Techstream, read the "Data List".
      ECM

      Tester Display Test Part Control Range Diagnostic Note
      Shift SW Status (R Range) Park/neutral position switch status/
      ON or OFF
      Shift lever is:
      • In R: ON
      • Not in R: OFF
      When the shift lever position displayed on the Techstream differs from the actual position, the adjustment of the park/neutral position switch or shift cable may be incorrect

      OK

      Shift Lever Position Display
      R ON
      Except R OFF
    6. Proceed to the next step based on the inspection result.

      Result

      Result Proceed to
      OK A
      NG (for A960E) B
      NG (for A760H) C
      NG (for A760E) C

    D → See step   12 

    C → See step   11 

    B → See step   10 

    A: Go to next step 

  7. REPLACE MAIN BODY ECU LH (COWL SIDE JUNCTION BLOCK LH) 
    1. Replace the main body ECU LH (cowl side junction block LH).
    2. Enter "Vehicle Signal Check Mode".

      HINT: 

      Refer to Check Vehicle Signal in Operation Check.

      Fig 2: Identifying Vehicle Signal Check Mode Screen
      GTY289776Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that the display changes between ON and OFF according to the shift lever operation.

      OK

      Shift Lever Position Display
      Except R OFF
      R ON

      HINT: 

      This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.

    NG → See step   8 

    OK → END 

  8. REPLACE NETWORK GATEWAY ECU 
    1. Replace the network gateway ECU. Refer to REMOVAL .
    2. Enter "Vehicle Signal Check Mode".

      HINT: 

      Refer to Check Vehicle Signal in Operation Check.

      Fig 3: Identifying Vehicle Signal Check Mode Screen
      GTY289776Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that the display changes between ON and OFF according to the shift lever operation.

      OK

      Shift Lever Position Display
      Except R OFF
      R ON

      HINT: 

      This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.

    4. Proceed to the next step based on the inspection result.

      Result

      Result Proceed to
      OK A
      NG (for 2GR-FSE) B
      NG (for 4GR-FSE) C

    C → See step   14 

    B → See step   13 

    A → END 

  9. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE  
  10. GO TO AUTOMATIC TRANSMISSION SYSTEM (for A960E). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  11. GO TO AUTOMATIC TRANSMISSION SYSTEM (for A760H). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  12. GO TO AUTOMATIC TRANSMISSION SYSTEM (for A760E). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  13. REPLACE ECM (for 2GR-FSE). Refer to  REMOVAL 
  14. REPLACE ECM (for 4GR-FSE). Refer to  REMOVAL