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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.
  1. INSPECT RADIO RECEIVER ASSY (+B, ACC, GND) 
    1. Check that the continuity between terminals at each condition, as shown in the chart.

      Standard: 

      RADIO RECEIVER ASSY CONNECTOR CONTINUITY

      Tester connection Condition Specified condition
      GND-Body ground Constant Continuity
      Fig 1: Identifying Radio Receiver Assy Connector Terminals
      G02861004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that the voltage between terminals at each condition, as shown in the chart.

      Standard: 

      RADIO RECEIVER ASSY CONNECTOR VOLTAGE

      Tester connection Condition Specified condition
      +B-GND Constant 10-14 V
      ACC-GND Ignition switch ACC or ON 10-14 V
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: CHECK AND REPLACE RADIO RECEIVER ASSY