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.

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSY - MULTI-DISPLAY)
1. Disconnect the connector from the multi-display M4 and combination meter assy C12.
2. 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: Checking Harness And Connector (Multi-Display)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 3: Checking Harness And Connector (Combination Meter Assy)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.
INSPECT COMBINATION METER ASSY
1. Connect the combination meter assy connector C12.
2. Measure voltage.
  1. Adjust the shift lever to the neutral position.
  2. Jack up either one of the front wheels.
  3. Turn ignition switch to the ON position.
  4. Measure the voltage between terminal +S and body ground of combination meter assy when the front wheels are turned slowly.
  OK: Voltage is pulsed as shown below.
Fig 4: Inspecting Combination Meter Assy
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: Identifying Voltage Pulse
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: GO TO COMBINATION METER SYSTEM (SEE PRECAUTION )

OK: REPLACE MULTI-DISPLAY (SEE REPLACEMENT )