Now that they’ve won their first playoff game in 13 seasons, the SanDiegoChargers don’t want to stop there.

The Chargers finally came to life late in the second half Sunday to beat the Tennessee Titans 17-6 in an AFC wild-card game.

LaDainian Tomlinson was held to 42 yards on 21 carries, but the star running back got to celebrate the first playoff victory in three tries in his brilliant seven-year career.

”It didn’t come easy, but I tell you, I’m just happy to get that first one,” Tomlinson said.

”It’s a relief, but at the same time, it’s not like we’re saying, ‘OK, we won a playoff game, so let’s get ready to lose,’ you know what I mean? I’m already thinking about next week and how tough of a game we’re going to have going to Indianapolis, facing the champs.”

The Chargers (12-5) advance to face the Colts on Sunday. SanDiego escaped with a 23-21 win over the Colts at Qualcomm Stadium on Nov. 11, when Peyton Manning threw a career-high six interceptions and Adam Vinatieri missed a 29-yard field-goal attempt with 1:31 left.

”We’re feeling good, but like I’ve been telling everybody all week, we’re smirking and not smiling,” outside linebacker Shaun Phillips said. ”It’s just one playoff win and if we’re satisfied with just one playoff win, then we should just pack our bags right now.”

The Titans bottled up Tomlinson, the two-time NFL rushing champion and 2006 league MVP, and dared quarterback Philip Rivers to beat them. The second-year starter did just that, throwing a 25-yard touchdown pass to Vincent Jackson late in the third quarter that gave SanDiego its first lead at 10-6.

L.T. finally found the end zone midway through the fourth quarter, on a fourth-down leap over the pile from inside the 1 that had to survive a video review.

Tomlinson went airborne and was met by linebacker Stephen Tulloch, but the running back used a second effort to get the ball over the goal line before linebacker Colin Allred knocked it out of his hands.

”I just felt like going through the air was a better option,” Tomlinson said.

Tomlinson jumped for joy once he emerged from the pile, but Titans coach Jeff Fisher threw his red challenge flag. After a review, it was ruled that the ball crossed the plane. Tomlinson celebrated again on the sideline.

Twelve of Tomlinson’s 21 carries went for 1 yard or less, including four for losses.

There would be no comeback for Vince Young and the Titans (10-7), who were missing four offensive starters due to injuries.

”Nobody gave us a chance to be here,” Young said. ”We’re just happy to be part of it. Next year, we’ll have a good run again.”

Said Fisher: ”I thought Vince played well enough for us to win. He got banged around a little bit and bounced back, made some throws.”

Just like that, the nightmares of the Marty Schottenheimer era finally went away.

Schottenheimer was fired due to front-office friction in February, a month after SanDiego inexplicably melted down in a 24-21 divisional-round playoff loss to New England. The Chargers had gone an NFL-best 14-2 in 2006.

Two years earlier, the Chargers lost in overtime to the New York Jets in a home wild-card game.

Overall, the Chargers had lost four straight postseason games dating to their ugly 49-26 loss to San Francisco in the Super Bowl following the 1994 season.

”It’s so long ago it seems like it was another lifetime,” said long snapper David Binn, the only player left from that Chargers team.

Norv Turner improved his career playoff record as a head coach to 2-1. After stumbling to a 1-3 start and then leveling off at 5-5, the Chargers have won seven straight and 11 of 13 under Turner.

”Norv was brought here in an odd situation,” Tomlinson said. ”It was either, get us back to the playoffs and win a game in the playoffs, or you’re a failure. That was kind of what he was given.”

When it was noted during his postgame news conference that his eyes were red, Turner said: ”I don’t know. It’s probably the rain.

”This game is about the players. They fought through a lot of ups and downs, and a lot of disappointments. This is a start for them.”

Rivers was 19-of-30 for 292 yards, with one interception. Chris Chambers had six catches for 121 yards, and Jackson had five for 114.

”We wanted Philip Rivers to beat us,” Titans linebacker Keith Bulluck said. ”I think he did a good job of that. Anytime you leave anybody wide open, any quarterback in this league is going to hit them.”

The Titans were looking for some payback after losing to the Chargers in overtime in Nashville in a tough, nasty game five weeks ago. Several players were hurt, and four players were fined a total of $32,500 by the NFL.

The Titans started faster than the Chargers, but couldn’t find the end zone.