2004 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Section 351 (Multi Display): Troubleshooting

WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

  • Troubleshoot the Multi Display according to the table below.
  • w/ LEXUS Navigation System (See TERMINALS OF ECU )
TROUBLESHOOTING NO

Troubleshooting No.
Multi display does not operate. 1
Clock loses or gains time. 2
Drive monitor function malfunction. 3
Outer temperature display malfunction. 4
Security indicator does not come on. See SECURITY INDICATOR CIRCUIT and SECURITY INDICATOR LIGHT CIRCUIT
  1. +/- 1.5 seconds / day 
  1. TROUBLESHOOTING NO.1 
    1. MULTI DISPLAY DOES NOT OPERATE 
      1. Check that the battery positive voltage is 10 - 16 V.

        If voltage is not as specified, replace the battery.

      2. Check that the ECU-IG1, ECU-B and ACC fuses are not blown.

        If the fuse is blown, replace the fuse and check for short.

      3. Troubleshoot the multi display as follows.

      HINT

      Inspect the connector on the wire harness side.

      Fig 1: Identifying Multi Display Assembly
      G03375720Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.