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Home >> Lexus >> 2011 >> HS 250h >> Repair and Diagnosis >> Body & Frame >> Mirrors >> Rear View Monitor System (W/Wide View Front Monitor System) (Diagnostics - Introduction) >> REAR VIEW MONITOR SYSTEM (w/ Wide View Front Monitor System) >> How To Proceed With Troubleshooting >> How To Proceed With Troubleshooting

How To Proceed With Troubleshooting

HINT: 

  1. VEHICLE BROUGHT TO WORKSHOP 

    NEXT: Go to next step 

  2. INSPECT BATTERY VOLTAGE 
    1. Measure the battery voltage with the power switch off.

      Standard Voltage

      11 to 14 V

      If the voltage is below 11 V, replace or recharge the battery before proceeding to the next step.

      NEXT: Go to next step 

  3. CHECK NAVIGATION SYSTEM 
    1. Refer to Navigation System. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .
      RESULT

      Result Proceed to
      Navigation system is normal A
      Navigation system is abnormal B

      B → GO TO NAVIGATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      A: Go to next step 

  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
    1. Use the Techstream to check if the CAN Communication System is functioning normally.
      RESULT

      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output B

      B → GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      A: Go to next step 

  5. CHECK FOR DTC* 
    1. Check for DTCs and note any codes that are output. Refer to DTC CHECK/CLEAR .
    2. Clear the DTC. Refer to DTC CHECK/CLEAR .
    3. Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.
      NOTE: The parking assist ECU may store the DTCs of the following system. If DTCs other than those specified in Diagnostic Trouble Code Table of the rear view monitor system are output, refer to Diagnostic Trouble Code Table for the applicable system.
      System Proceed to
      Wide View Front Monitor System Refer to DIAGNOSTIC TROUBLE CODE TABLE
      RESULT

      Result Proceed to
      DTC is not output A
      DTC is output B

      B → Go to step   8 

      A: Go to next step 

  6. PROBLEM SYMPTOMS TABLE 
    1. Refer to PROBLEM SYMPTOMS TABLE .
      RESULT

      Result Proceed to
      Fault is not listed in Problem Symptoms Table A
      Fault is listed in Problem Symptoms Table B

      B → Go to step   8 

      A: Go to next step 

  7. OVERALL ANALYSIS AND TROUBLESHOOTING 
    1. Data List/Active Test. Refer to DATA LIST/ACTIVE TEST 
    2. Terminals of ECU. Refer to TERMINALS OF ECU 

      NEXT: Go to next step 

  8. ADJUST, REPAIR OR REPLACE 

    NEXT: Go to next step 

  9. CONFIRMATION TEST 

    NEXT → END