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

1. Disconnect the G41 4 wheel drive control ECU connector.
2. Disconnect the C34 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
   G41-10 (TL2) - C34-4 (TL2)	Always	Below 1 Ω
   G41-9 (TL3) - C34-5 (TL3)	Always	Below 1 Ω
   C34-6 (GND1) - Body ground	Always	Below 1 Ω
   G41-10 (TL2) or C34-4 (TL2) - Body ground	Always	10 kΩ or higher
   G41-9 (TL3) or C34-5 (TL3) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the C34 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
   C34-4 (TL2) - Body ground	Engine switch on (IG)	10.5 to 14 V
   C34-5 (TL3) - Body ground	Engine switch on (IG)	10.5 to 14 V

   Result

   Proceed to
   OK
   NG

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 - ]