"You went way over the line for what society can accept," he said.

A jury in December convicted Won, 26, of two counts of attempted second-degree sexual assault and one count each of attempted second-degree extortion and second-degree unlawful imprisonment. But an error in jury instructions led to the dropping of the sexual assault charges, which could have resulted in a 10-year term.

Defense attorney Philip Lowenthal argued for a sentence of probation and community service, saying Won's police career is over. "This offense can't happen again," he said.

Lowenthal said a harsh punishment would send a mixed message.

"It may deter those who are thinking about being a police officer. They would be thinking, 'If you screw up, you're going to get hammered hard.' No wonder we have so many openings" in the Maui Police Department, he said.

Won declined to address the court, but during his trial he denied the charges.

Maui Prosecuting Attorney Davelynn Tengan urged Cardoza to impose the maximum five-year term, saying Won's actions dealt a serious blow to the hundreds of officers who serve and protect Maui County's residents.

Rosa Rodriguez, 27, testified during Won's trial that the officer stopped her car July 28 on Lower Honoapi'ilani Road in Kahana because of an expired safety sticker. The Honokowai woman, a Mexican national living here illegally, said Won ordered her into his patrol car and drove her to the one-room Napili police substation, where he used hand and body motions to indicate he wanted sexual favors.

When she refused, he handcuffed her and drove her back to her car, making a belated report of the traffic stop to a radio dispatcher. Won then took Rodriguez to the Lahaina Police Station, where she was booked for driving without a license and having an expired safety sticker and no insurance.

Later that day, after Rodriguez was released from custody, she told her story to a Spanish-speaking police officer and an investigation was launched.

Won, an O'ahu native who moved to Maui to become a policeman, testified he took the woman to the Napili substation because they were disrupting traffic and he wanted to clear up the confusion caused by their inability to communicate. Any motions he made were misinterpreted, he said.