LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2012 >> IS 250 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System (Diagnostics & Symptom Tests) >> Can Communication System >> Symptom Tests >> Navigation ECU Communication Stop Mode >> Procedure

Navigation ECU Communication Stop Mode: Procedure

  1. CHECK FOR OPEN IN CAN BUS LINE (DISPLAY AND NAVIGATION MODULE DISPLAY BRANCH LINE) 
    1. Turn the engine switch off.
    2. Disconnect the display and navigation module display connector.
      Fig 1: Display And Navigation Module Display Connector Terminals
      GTY393735Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J100-21 (CANH) - J100-22 (CANL) Engine switch off 54 to 69 Ω

    NG → REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY BRANCH LINE) 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 2: Identifying J100 Connector Terminals
      GTY393736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

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

      Standard Voltage

      Tester Connection Condition Specified Condition
      J100-1 (+B1) - Body ground Always 11 to 14 V
      J100-2 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V
      J100-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

    OK → REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY 

scientia non olet · About LEMON Manuals