DTC C1340/47 Center Differential Lock Circuit: Wiring Diagram

Fig 1: Center Differential Lock Wiring Diagram

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

OK : Go To Next Step

CHECK FOR DTC

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 (COMBINATION METER ).
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:

Fig 2: Identifying Terminal EXI Of Skid Control ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard voltage: 10 to 14 V

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR

OK : Go To Next Step
INSPECT TRANSFER INDICATOR SWITCH
1. Check the transfer indicator switch (INSPECTION ).
  NG : REPLACE TRANSFER INDICATOR SWITCH
  
  OK : REPLACE SKID CONTROL ECU ASSEMBLY