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 FOR ANY FOREIGN OBJECT
1. Check for any foreign object.
  1. Check that no foreign object or defect is detected in the cassette tape player of radio receiver assembly.
  Standard: No foreign object and defect detected.
  
  NG: REMOVE FOREIGN OBJECT
  
  OK: Go to Next Step
CHECK CASSETTE TAPE
1. Check the cassette tape.
  1. Check that the cassette tape is a normal tape to which music or voice is recorded.
  Standard: Proper cassette tape to which music or voice is recorded.
  
  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: The function is recovered to be normal.
  
  OK: CASSETTE TAPE FAULTY
  
  NG: Go to Next Step
CHECK IF RADIO AUTO-SEARCH FUNCTIONS PROPERLY
1. Check if the radio auto-search functions properly.
  1. Perform the auto-search of the radio and check that the operation is normal.
  Standard: The operation returns to be normal.
  
  OK: CHECK AND REPLACE RADIO RECEIVER ASSY
  
  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