Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CENTER DIFFERENTIAL LOCK SWITCH OPERATION
1. Check the center differential lock switch (see CENTER DIFFERENTIAL LOCK SWITCH ).
NG: REPAIR CENTER DIFFERENTIAL LOCK SWITCH

OK: GO TO NEXT STEP

CHECK FOR DTC

Turn the ignition switch ON.
Check that the VSC TRAC warning light turns on.

Check for DTCs.

Result:

RESULT REFERENCE

Result	Proceed to
DTC is output	A
DTC is not output	B

B: END

A: GO TO NEXT STEP

CHECK CENTER DIFFERENTIAL LOCK INDICATOR LIGHT
1. Check the center differential lock indicator light (see REMOVAL ).
NG: REPLACE COMBINATION METER

OK: GO TO NEXT STEP
CHECK WIRE HARNESS (COMBINATION METER - SKID CONTROL ECU ASSEMBLY AND BATTERY)
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: GO TO NEXT STEP
CHECK WIRE HARNESS (SKID CONTROL ECU ASSEMBLY - BODY GROUND)
1. Remove the skid control ECU with the connectors still connected.
2. Turn the ignition switch ON.
3. Measure the voltage between terminal EXI of the skid control ECU and body ground when the transfer is in the L4 position.
  OK:
  
  Standard voltage: 10 to 14 V
  
  Fig 1: Center Differential Lock Circuit Diagram
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: GO TO NEXT STEP
INSPECT TRANSFER INDICATOR SWITCH
1. Check the transfer indicator switch (see INSPECTION ).
NG: REPLACE TRANSFER INDICATOR SWITCH

OK: REPLACE SKID CONTROL ECU ASSEMBLY