DTC P17AC: Transfer Shift Motor Limit Switch Circuit [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.
When the transfer switches modes, the TL1, TL2, TL3, B and L4 terminals of the limit switch are in one of the ON/OFF combinations listed in the table below.
| Terminal | When H2 | Switching between H2 and H4 | Switching between H4 and H2 | When H4 | Switching between H4 and L4 | Switching between L4 and H4 | When L4 |
|---|---|---|---|---|---|---|---|
| TL1 | ON (GND) | ON (GND) | ON (GND) | OFF (OPEN) | OFF (OPEN) | OFF (OPEN) | OFF (OPEN) |
| TL2 | OFF (OPEN) | OFF (OPEN) | OFF (OPEN) | OFF (OPEN) | ON (GND) | ON (GND) | ON (GND) |
| TL3 | OFF (OPEN) | ON (GND) | ON (GND) | ON (GND) | ON (GND) | ON (GND) | OFF (OPEN) |
| B | OFF (OPEN) | OFF (OPEN) | ON (GND) | ON (GND) | ON (GND) | ON (GND) | ON (GND) |
| L4 | OFF (OPEN) | OFF (OPEN) | OFF (OPEN) | OFF (OPEN) | OFF (OPEN) | ON (GND) | ON (GND) |
A malfunction is detected depending on the combination of the 3 circuits that make up the limit switch of the transfer shift actuator assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P17AC | Transfer Shift Motor Limit Switch Circuit |
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