DTC P15EA-12: Oil Jet Control Valve Circuit Short to Battery; DTC P15EA-14: Oil Jet Control Valve Circuit Short to Ground or Open [10/2015 - ]: Description

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The piston-cooling oil jet control system uses the oil pressure switching valve assembly to start and stop the operation of the oil jets.

When the oil pressure switching valve assembly operates, oil pressure from the oil pressure switching valve assembly closes the relief valve, which shuts off the oil path between the oil pump and oil jet and stops the operation of the oil jets. This reduces fuel dilution during low-temperature starting and improves the piston heating to reduce friction and suppress the generation of deposits. When the oil pressure switching valve assembly is inoperative, oil pressure from the oil pressure switching valve assembly is cut and the relief valve opens. This opens the oil path between the oil pump and oil jet and starts the oil jet to cool and lubricate the pistons.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P15EA-12	Oil Jet Control Valve Circuit Short to Battery	Short in oil pressure switching valve assembly circuit and power supply circuit (1 trip detection logic).	Short in oil pressure switching valve assembly circuit Oil pressure switching valve assembly ECM	Does not come on	DTC stored	SAE Code: P15EC
P15EA-14	Oil Jet Control Valve Circuit Short to Ground or Open	Open or short in pressure discharge valve assembly circuit (1 trip detection logic).	Open or short in oil pressure switching valve assembly circuit Oil pressure switching valve assembly Semiconductor pwr integration ECU ECM	Does not come on	DTC stored	SAE Code: P15EB