Troubleshooting No. 1

WARNING: This page is about a different car, the 2004 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

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 Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Identifying Multi Display Troubleshooting Flow Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002