LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2005 >> ES 330 >> Repair and Diagnosis >> External Pages >> Different car >> Section 125 (Audio System - Diagnostics) >> Audio System >> Power Source Circuit (Radio Receiver 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 RECEIVER ASSY (BU+B, ACC+B, GND) 
    1. Remove the radio receiver assy.
    2. Check continuity between terminals at each condition, as shown in RADIO RECEIVER ASSY (BU+B, ACC+B, GND) CONTINUITY  .

      Standard: 

      RADIO RECEIVER ASSY (BU+B, ACC+B, GND) CONTINUITY

      Tester connection Condition Specified condition
      GND-Body ground Always Continuity
    3. Check the voltage between terminals at each condition, as shown in RADIO RECEIVER ASSY (BU+B, ACC+B, GND) VOLTAGE  .

      Standard: 

    RADIO RECEIVER ASSY (BU+B, ACC+B, GND) VOLTAGE

    Tester connection Condition Specified condition
    BU+B - GND Always 10 to 14 V
    ACC+B - GND Ignition SW ACC 10 to 14 V
    Fig 1: Inspecting Radio Receiver Assy (BU+B, ACC+B, GND)
    G02630120Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    2. OK: GO TO NEXT STEP 
  2. CHECK FOR PROBLEM SYMPTOMS TABLE 
    1. (See PROBLEM SYMPTOMS TABLE  ).
    PROBLEM SYMPTOMS CHECK

    A Suspected areas are cleared
    B Suspected areas still exist
    1. B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   ) 
    2. A: REPLACE RADIO RECEIVER ASSY