LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2004 >> RX 330 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 371 (Navigation System - Diagnostics) >> Navigation System >> Power Source Circuit (Radio And Navigation ASSY) >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT RADIO AND NAVIGATION ASSY (B, ACC, GND) 
    1. Disconnect the radio and navigation assy connector R15.
    2. Measure the resistance according to the value(s) in RADIO AND NAVIGATION ASSY (B, ACC, GND) RESISTANCE .

      Standard: 

      RADIO AND NAVIGATION ASSY (B, ACC, GND) RESISTANCE

      Tester connection Condition Specified condition
      GND-Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in RADIO AND NAVIGATION ASSY (B, ACC, GND) VOLTAGE .

      Standard: 

    RADIO AND NAVIGATION ASSY (B, ACC, GND) VOLTAGE

    Tester connection Condition Specified condition
    B - GND Always 10 to 14 V
    ACC - GND Ignition SW ACC 10 to 14 V
    Fig 1: Disconnecting Radio & Navigation Assy Connector R15
    G02630286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE   OR  DIAGNOSTIC TROUBLE CODE TABLE  )