DTC P2772: Four Wheel Drive (4WD) Low Switch Circuit Range / Performance [08/2019 - ]: Procedure

1. Disconnect the F47 4 wheel drive control ECU connector.
2. Disconnect the B62 transfer shift actuator assembly connector.
3. Disconnect the F51 ECM connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F47-3 (4WDL) - B62-9 (L4)	Always	Below 1 Ω
   B62-10 (GND) - Body ground	Always	Below 1 Ω
   F47-3 (4WDL) or B62-9 (L4) - 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

1. Turn the ignition switch to ON.
2. Turn the transfer position switch to L4.
3. Turn the ignition switch off.
4. Disconnect the B62 transfer shift actuator assembly connector.
5. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Transfer Shift Actuator Assembly)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   9 (L4) - 10 (GND)	Transfer L4	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE 4 WHEEL DRIVE CONTROL ECU. Refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY. Refer to  DISASSEMBLY [08/2019 - ]