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 MULTI-DISPLAY
1. Disconnect the multi-display connector M4.
2. Measure the voltage according to the value (s) in the figure Fig 1 below.
  Standard:
  
  Fig 1: Terminals Voltage Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Inspecting Multi-Display
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK:

REPLACE MULTI-DISPLAY (SEE REPLACEMENT )

NG: Go to next step.
CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - DRIVER SIDE J/B ECU)
1. Disconnect the connector from the multi-display M4 and driver side J/B ECU DF, D6.
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 (Multi-Display)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 5: Checking Harness And Connector (Driver Side J/B ECU)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (SEE PROBLEM SYMPTOMS TABLE )