Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

Check that the center differential is free and center diff. lock switch is OFF.
1. NG: Repair the center differential lock system.
2. OK: Go to next step.
Is DTC output?
Check the DTC PRE-CHECK .
1. NO: END
2. YES: Go to next step.
Check that bulb for center diff. lock indicator light is not burnt out.
1. NG: Replace indicator light.
2. OK: Go to next step.
Check for open circuit in harness and connector between battery and center diff. lock indicator light, center diff. lock indicator light and skid control ECU (See HOW TO USE THE DIAGNOSTIC TABLE AND INSPECTION ).
1. NG: Repair or replace harness or connector.
2. OK: Go to next step.
Check voltage between terminal EXI of skid control ECU and body ground.
PREPARATION:

Remove the skid control ECU with connectors still connected.

CHECK:
1. Turn the ignition switch ON.
2. Measure voltage between terminal EXI of the skid control ECU and body ground when the transfer is in the L4 position.
  OK:
  
  Voltage: 10 to 14V
  
  Fig 1: Measuring Voltage Between Terminal EXI Of Skid Control ECU & Body Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Repair or replace harness or connector.
2. OK: Go to next step.
Check transfer indicator switch (See INSPECTION ).
1. NG: Replace transfer indicator switch.
2. OK: Check and replace skid control ECU.