Monitor Description

WARNING: This page is about a different car, the 2025 Toyota Highlander, 2024 Toyota Highlander, and 2023 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

While the engine is being cranked, positive battery voltage is applied to terminal STA of the ECM. If the starter signal (STA) is not detected by the ECM when the engine is started, it determines that there is a malfunction in the STA circuit. The ECM then illuminates the MIL and stores the DTC.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Note
P0615-14	Starter Relay Circuit Short to Ground or Open	All of the following conditions are met (2 trip detection logic): (a) The vehicle speed is 4 km/h (2.49 mph) or less. (b) The engine status changed from stopped to running. (c) The STA signal is off.	Starter relay (ST) circuit ECM	Comes on	SAE Code: P0616