Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IF RADIO AUTO-SEARCH FUNCTIONS PROPERLY
1. Check if the radio auto-search function properly.
  1. Perform the auto-research of the radio and check that the operation is normal.
  Standard: malfunction disappear.
  
  NG: Go to step 5
  
  OK: Go to Next Step
PRESS "EJECT" AND CHECK OPERATION
1. Press "EJECT" and check the operation.
  1. Press the cassette tape EJECT switch of the radio receiver assembly for 2 sec or more and check that the cassette tape is ejected.
  Standard: The cassette tape is ejected.
  
  NG: CHECK AND REPLACE RADIO RECEIVER ASSY
  
  OK: Go to Next Step
CHECK CASSETTE TAPE
1. Check the cassette tape.
  1. Check that the ejected cassette tape does not have the label peeling, cassette body deformation and others.
  Standard: No fault on the cassette tape.
  
  NG: CASSETTE TAPE FAULTY
  
  OK: Go to Next Step
REPLACE CASSETTE TAPE WITH ANOTHER AND RECHECK
1. Replace the cassette tape with another and recheck.
  1. Replace the faulty cassette tape with the normal one to see if the same trouble occurs again.
  Standard: malfunction disappear.
  
  OK: CASSETTE TAPE FAULTY
  
  NG: Go to Next Step
INSPECT RADIO RECEIVER ASSY (+B, ACC, GND)
1. Check that the continuity between terminals at each condition, as shown in Fig 1 .
  Standard:
  
  Fig 1: Checking Continuity Between Terminals GND & Body Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check that the voltage between terminals at each condition, as shown in Fig 2 .
  Standard:
  
  Fig 2: Checking Voltage Between Terminals +B, ACC & GND
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 3: Identifying Radio Receiver Assy +B, ACC & GND
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK: CHECK AND REPLACE RADIO RECEIVER ASSY
  
  NG: REPAIR OR REPLACE HARNESS OR CONNECTOR