DTC P2772: Four Wheel Drive (4WD) Low Switch Circuit Range / Performance [08/2019 - ]: Procedure
WARNING: This page is about a different car, the 2024 Toyota 4Runner, 2023 Toyota 4Runner, 2022 Toyota 4Runner, 2021 Toyota 4Runner, and 2020 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY)
- Disconnect the F47 4 wheel drive control ECU connector.
- Disconnect the B62 transfer shift actuator assembly connector.
- Disconnect the F51 ECM connector.
- 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
- CHECK TRANSFER SHIFT ACTUATOR ASSEMBLY
- Turn the ignition switch to ON.
- Turn the transfer position switch to L4.
- Turn the ignition switch off.
- Disconnect the B62 transfer shift actuator assembly connector.
- Measure the resistance according to the value(s) in the table below.
*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 - ]