Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Corolla. 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.
1. NG: GO to step 5
2. 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.
1. NG: CHECK AND REPLACE RADIO RECEIVER ASSY
2. 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.
1. NG: CD FAULTY
2. 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.
1. OK: CD FAULTY
2. NG:

INSPECT RADIO RECEIVER ASSY (+B, ACC, GND)

Check that the continuity between terminals at each condition, as shown in the chart.

Standard:

RADIO RECEIVER ASSY CONNECTOR TERMINAL CONTINUITY

Tester connection	Condition	Specified condition
GND-Body ground	Constant	Continuity

Fig 1: Identifying Radio Receiver Assy Connector Terminals +B, ACC And GND

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check that the voltage between terminals at each condition, as shown in the chart.

Standard:

RADIO RECEIVER ASSY CONNECTOR TERMINAL VOLTAGE

Tester connection	Condition	Specified condition
+B-GND	Constant	10-14 V
ACC-GND	Ignition switch ACC or ON	10-14 V

OK: CHECK AND REPLACE RADIO RECEIVER ASSY
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR