SAN DIEGO — The NFL’s top passing attack against one of the league’s worst pass defenses is a recipe for points.

So, if the pass-porous Raiders have designs on getting a road win Sunday against the pass-happy San Diego Chargers, it’s likely Oakland will need to do its fair share of scoring. A heavy — and healthy — dose of running back Latavius Murray would help immensely.

Murray, the AFC’s seventh-leading rusher with 336 yards, has been unable to finish the past two games because of a combination of turnover issues and a shoulder injury. Last week’s bye came at a good time for him.

“It was a good chance to heal up and just relax a little bit,” Murray said last week. “I wouldn’t say (I’m) 100 percent, but I feel good and I will be playing and will be participating fully.”

Murray was a full-go in every Raiders practice this past week, and Oakland (2-3) needs him to recapture his form from Week 3, when he rushed for 139 yards and a touchdown in a 27-20 win at Cleveland. The Raiders haven’t won since, losing to the Chicago Bears (22-20) and Denver Broncos (16-10).

Murray injured his shoulder a week later in Chicago on an afternoon in which he wasn’t formally charged with a turnover but was involved in two. He had a ball bounce off his hands for an interception, and he dropped a pitch for a fumble that was charged to quarterback Derek Carr. Murray, a third-year pro out of Central Florida, tried to play through the injury two weeks ago against Denver but managed only two second-half carries before spending the rest of the game on the sideline.

The Raiders will need much more than that against a Chargers (2-4) team that leads the NFL in total yards and passing offense and is fresh from Philip Rivers’ 503-yard effort against the Green Bay Packers. But as explosive as San Diego’s offense is, the Chargers’ defense may present a favorable matchup for the Raiders, especially with Pro Bowl safety Eric Weddle out with a groin injury.

San Diego is last in the AFC against the run, giving up 132.5 yards per game. The team just above the Chargers? Those Browns that Murray and the Raiders torched a month ago in the only road win in Carr’s 21-game career.

“They bring a lot of different looks, and maybe a misfit here or there makes those run numbers not look so good,” Raiders coach Jack Del Rio said. “It’s a good defense. They are very good on third down getting off the field. That’s definitely an area we’ve got to make sure we’re staying ahead of the chains and not getting ourselves in third-and-forever.”

The Raiders aren’t bringing more focus to the run game this week, according to Murray.

“We want to establish the run every week,” he said. “I think that’s the most important thing, regardless of who we’re facing. We just know we need to run the ball to be successful.”

The Raiders have another option this week if Murray isn’t at full strength. Taiwan Jones is back after missing two games with a foot injury.

Sunday could mark the first time all five Raiders running backs (with fullbacks Marcel Reece and Jamize Olawale included) are active this season. Roy Helu was a healthy inactive for the opener, Olawale missed the next two with an ankle injury and then Jones missed a pair.

It should rate as no surprise that Carr’s highest-rated game of the season, against Cleveland, came when the running game was rolling. That also was rookie Amari Cooper’s biggest receiving output; eight catches for 134 yards.

The Raiders understand keeping Cooper involved is hugely important to their offense. He was targeted just four times in the loss to Denver after receiving a minimum of nine targets the previous four games. He also has been much more active in the first half of games (18 catches for 311 yards) than the second half (10 for 75).

Carr said during the bye week that he’ll leave it up to the coaches to get Cooper more involved.

“I’m going to just continue to do my reads the best I can, see the coverage, because you never want to force it,” Carr said.

Del Rio sounded open to forcing the game plan to better feature the team’s No. 4 overall pick.

“We want to make sure we’re keeping our key people involved,” Del Rio said. “We’re not going to do anything crazy. I think the ‘read’ just took it away from him on a few occasions. But certainly there are opportunities to make sure the guy stays involved, and we’ll look to make sure that happens.”