TRANS RANGE SENSOR

Reply Subscribe

Thread Tools

Search this Thread

Feb 9, 2011 | 05:59 AM

m50

Thread Starter

Junior User

Joined: Nov 2010

Posts: 89

Likes: 0

From: South Illinois

TRANS RANGE SENSOR

I borrowed a scan tool and got this code from my truck PO 708 transmission range sensor circuit high, I searched and found a post on what it is and how to change it out but my question is the code says TRS circuit high input does this circuit high input part mean anything extra or different?
thanks RB

Feb 9, 2011 | 07:36 PM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,730

Likes: 2,658

From: SE Florida

It means one of the circuits to the TRS is shorted to power. That could be a wiring problem or a bad TRS.

Feb 9, 2011 | 08:39 PM

Midwest Dually

Posting Guru

Joined: Jan 2009

Posts: 1,955

Likes: 2

From: Wyoming

Quote:

Originally Posted by Mark Kovalsky

It means one of the circuits to the TRS is shorted to power. That could be a wiring problem or a bad TRS.

Ooo.. A trans engineer! You need to stick around more often!

LOL

Feb 10, 2011 | 03:20 AM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,730

Likes: 2,658

From: SE Florida

I'm only a few posts from 5,000. I think I spend a lot of time here!

Feb 10, 2011 | 03:47 AM

Midwest Dually

Posting Guru

Joined: Jan 2009

Posts: 1,955

Likes: 2

From: Wyoming

Can we encourage you to see if you can hit 10,000? You get a free toaster! LOL

Feb 10, 2011 | 05:27 AM

m50

Thread Starter

Junior User

Joined: Nov 2010

Posts: 89

Likes: 0

From: South Illinois

Quote:

Originally Posted by Mark Kovalsky

It means one of the circuits to the TRS is shorted to power. That could be a wiring problem or a bad TRS.

Thanks Mark, do you think I should replace the TRS as the most probable cause or how would I check the wiring?
RB

Feb 10, 2011 | 06:21 PM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,730

Likes: 2,658

From: SE Florida

Check each wire for opens, shorts to ground, and shorts to power. Each one needs to be checked from the PCM to the TRS.

Top 10 Fords at 2026 Carlisle Ford Nationals

Joe Kucinski

3 Best / 3 Worst Parts of Modern Ford Ownership

Brett Foote

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

Pouria Savadkouei

Every 2026 Ford Engine Explained

Brett Foote

10 Ugly Ford Trucks That We Still Kinda Love

Joe Kucinski

10 Things Every Truck Owner NEEDS (2026 Edition)

Michael S. Palmer

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Verdad Gallardo

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Joe Kucinski

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Brett Foote

Top 10 Ford Truck Tragedies

Joe Kucinski

Feb 11, 2011 | 12:19 PM

RRranch

Posting Guru

Joined: Nov 2007

Posts: 2,158

Likes: 0

From: West Texas

Almost every time I got a circuit high code it was water or ice somewhere it didn't belong. Shorting the circuits to power. Those GM ABS modules are just notorious for it. unhook your pcm connector and check for water or corrosion then work your way down from there. Unhook the batteries first.

Feb 11, 2011 | 05:45 PM

#10

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,730

Likes: 2,658

From: SE Florida

Quote:

Originally Posted by m50

I hate to sound stupid but, where is the PCM and will the wires be the same color all the way between the PCM and the TRS?
thanks RB

Yes, they are, but if you're going to trace them by wire color you're going to have a very long day and not get the right answer. You need a wiring diagram. I don't have one to send you.