DTC P17A8: Transfer Shift Motor Control Circuit Circuit Open [08/2019 - ]: Description

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.

This DTC is output when an open circuit in the transfer shift motor drive circuit is detected.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
P17A8	Transfer Shift Motor Control Circuit Circuit Open	Diagnosis Condition: While switching between H2 and H4 or while switching between H4 and L4 (transfer shift motor operating) with the ignition switch turned to ON Malfunction Status: Open circuit in the transfer shift motor drive circuit Malfunction Time: 0.03 seconds or more Other: 1 trip detection logic	Wire harness and connector 4 wheel drive control ECU Transfer shift actuator assembly