DTC P17DF: Center Differential Lock Limit SW Circuit [08/2019 - ]: Procedure

1. Disconnect the F47 4 wheel drive control ECU connector.
2. Disconnect the B47 transfer shift actuator assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F47-10 (TL2) - B47-4 (TL2)	Always	Below 1 Ω
   F47-9 (TL3) - B47-5 (TL3)	Always	Below 1 Ω
   B47-6 (GND1) - Body ground	Always	Below 1 Ω
   F47-10 (TL2) or B47-4 (TL2) - Body ground	Always	10 kΩ or higher
   F47-9 (TL3) or B47-5 (TL3) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the B47 transfer shift actuator assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   B47-4 (TL2) - Body ground	Ignition switch ON	10.5 to 14 V
   B47-5 (TL3) - Body ground	Ignition switch ON	10.5 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Transfer Shift Actuator Assembly)

Result: 

OK 

REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY. Refer to  DISASSEMBLY [08/2015 - ] 

Result: 

NG 

REPLACE 4 WHEEL DRIVE CONTROL ECU. Refer to  REMOVAL [08/2015 - ]