Inspection Procedure

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

Cleaning IR Receiver Sensor
1. Clean up the infrared light emission part.
  1. Clean up the infrared light emission part of the stereo component control.
  2. Check if the same abnormality occurs again.
  Standard: Function return to normal condition.
1. OK: IR Receiver Dirty
2. NG: Go To Next Step
Check Battery (Remote Controller Assembly)
1. Check the dry cell battery.
  1. Check that the dry cell battery is not used up.
  Standard: The dry cell battery is not used up.
1. NG: Battery Empty
2. OK: Go To Next Step
Inspect Harness Or Connector (Radio Receiver Assembly - Stereo Component Controller)
1. Check that the continuity between terminals at each condition, as shown in Fig 2.
  Standard:
  
  Fig 1: Terminal Continuity Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Radio Receiver & Stereo Component Controller Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Repair Or Replace Harness Of Connector
2. OK: Go To Next Step
Check Stereo Component Controller Assembly (+B, ACC, GND)
1. Check that the continuity between terminals at each condition, as shown in Fig 4.
  
  Fig 3: Identifying Stereo Component Controller Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 4: Terminal Continuity Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check that the voltage between terminals at each condition, as shown in Fig 5.
  Standard:
  
  Fig 5: Terminal Voltage Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Repair Or Replace Harness Or Connector
2. OK: Check And Replace Stereo Component Controller Assembly