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Home >> Toyota >> 2003 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 545 (Navigation System - Diagnostics) >> Power Source Circuit (Radio Receiver ASSY) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT RADIO RECEIVER ASSY (B, ACC, GND) 
    1. Disconnect the radio receiver assy connector R4.
    2. Measure the resistance according to the value in the table below.

      Standard: 

      SPECIFIED CONDITION

      Tester connection Condition Specified condition
      GND - Body ground Always Below 1 Ω
    3. Measure the voltage according to the values in the table below.

      Standard: 

      SPECIFIED CONDITION

      Tester connection Condition Specified condition
      B - GND Always 10 to 14 V
      ACC - GND Ignition SW ACC 10 to 14 V
      Fig 1: Identifying Radio Receiver Assy Connector R4
      G02909454Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN DIAGNOSTIC TROUBLE CODE CHART (See  DIAGNOSTIC TROUBLE CODE CHART  )