LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2010 >> IS F >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation (Diagnostic Codes & Symptom Tests) >> Navigation System >> Navigation ECU Power Source Circuit >> Procedure

Navigation ECU Power Source Circuit: Procedure

  1. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY POWER SOURCE) 
    1. Disconnect the J100 display and navigation module display connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J100-10 (GND1) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      J100-1 (+B1) - J100-10 (GND1) Engine switch off 11 to 14 V
      J100-2 (ACC) - J100-10 (GND1) Engine switch on (ACC) 11 to 14 V
      J100-3 (IG) - J100-10 (GND1) Engine switch on (IG) 11 to 14 V

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   2 

  2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
scientia non olet · About LEMON Manuals