Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT RADIO RECEIVER ASSY
1. Measure the resistance according to the value (s) in the figure Fig 1 below.
  Standard:
  
  Fig 1: Terminals Resistance Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Inspecting Radio Receiver Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE RADIO RECEIVER ASSY (SEE REPLACEMENT )

OK: Go to next step.
CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSY - MULTI-DISPLAY)
1. Disconnect the connector from the radio receiver assy R2 and multi-display M4.
2. Measure the resistance according to the value (s) in the figure Fig 3 below.
  Standard:
  
  Fig 3: Terminals Resistance Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 4: Checking Harness And Connector (Radio Receiver Assy)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 5: Checking Harness And Connector (Multi-Display)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN DIAGNOSTIC TROUBLE CODE CHART (SEE DIAGNOSTIC TROUBLE CODE CHART )