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 CD EJECT switch of the radio receiver assembly for 2 sec or more to see if the CD is ejected.
  Standard: CD is ejected.
  
  Reference:
  
  If the CD is not ejected, send the vehicle for repair.
  
  Do not try to drag it out by force.
  
  NG: CHECK AND REPLACE RADIO RECEIVER ASSY
  
  OK: Go to Next Step
CHECK IF A PROPER CD IS INSERTED
1. Check that a proper CD is inserted.
  1. Check that in what conditions the sound skipping occurs.
  Standard: Driving on the bad road.
  
  NG: CD FAULTY
  
  OK: Go to Next Step
REPLACE CD WITH ANOTHER AND RECHECK
1. Replace the CD with another and recheck.
  1. Check the installation condition of the radio receiver assembly.
  Standard: Installed properly.
  
  OK: CD 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