PabloCruise
SILVER Star
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
PabloCruise
SILVER Star
Looks like they go for ~$60!
- Thread starter
- #26
Great info, thanks for finding and attaching that!! The guys on here are so helpful!! Thanks guys!!
uHu
Bridgeburner
Read the reviews on Amazon on those. Seems to be a bad design that wears out the carbon trace after a few weeks. We need guinea pigs.
Hokie LX
SILVER Star
I like to practice what I preach - put my money where my mouth is - whatever and have been running the Dormans for quite a while (18 months?) with zero performance issues. I did a write up with pics and comparison to OE a while back and the only identifiable difference is the Dormans have apparent copper springs and the OE appear to have either gold or brass plated springs and the OE have a manufacturing date code printed on them. Otherwise they swap straight in.
uHu
Bridgeburner
I just ordered one via e-bight, for 17.75. We'll se how it measures up.
- Thread starter
- #31
I just ordered one as well. Attempting to return the $$$ one I already ordered 
- Thread starter
- #32
Can you post a link to your post, please
I would be interested in some pics, the location of this sensor on our trucks, and a write up on how to swap out the sensor. I don't have any issues with my AHC, but just like knowing and cataloging the info in my long term memory.
PabloCruise
SILVER Star
- Thread starter
- #35
Thanks for the link @PabloCruise !!
If you search "Dorman" by me you'll find a post where I've measured resistances, angular displacement etc and point out that the front OE potentiometers are left and right hand oriented and the Dorman potentiometers are right handed; however they do swap directly over and fit/function in left, right and rear installs. Best to swap over off vehicle to ensure you seat their lever arms properly and don't accidentally rotate the potentiometers wiper beyond its stops.
- Thread starter
- #37
@PADDO So, I replaced the RR Height sensor with the Dorman unit, and adjusted all the sensors for a bit of lift. I still get the RR Height Sensor malfunction DTC in Techstream. I have tried to clear the code but it doesn't seem to work. I then tried to do it manually (E1 and TC jumper) and nothing. The height adjust switch will not operate and the OFF light flashes when driving. Is there something I have failed to do? Is there an additional calibration? Anything?
Last edited:
Subscribe. I'm about to swap out my FL sensor with a Dorman and would like to know if there's anything else to it than the switch. I don't have techstream so I'm hoping that's not required. 
- Thread starter
- #39
It is fairly simple, just remove the switch from the assembly and re-install. Make sure to mark the position of the top bolt of assembly in slot in order to put it back where it was, or take a picture of the position. Unless you want to go ahead and do an AHC lift while you're under there.Subscribe. I'm about to swap out my FL sensor with a Dorman and would like to know if there's anything else to it than the switch. I don't have techstream so I'm hoping that's not required.
If a new potentiometer hasn't rectified the problem and DTCs won't manually clear (Tc&E1 jumped + brake pushes) then this really suggests a harness issue - DTC 1713 is "rear height control sensor circuit" open or short. The erratic and random height behavior you initially saw is/was indicative of a failing height sensor/mechanism but this won't necessarily throw a code until the system sees either a very low voltage , <0.3v ~ short, or > 4.7v ~ open circuit. If the sensor is in the process of dying through wear/corrosion then it usually provides bad feedback resulting in bad levelling control which is what you saw. Ideally you'd connect Techstream and with just IG on confirm that the sensors are responding to changes in chassis height, jack up/lower the rear and observe the feedback change to the ecu etc. At a minimum put a multimeter on the replacement sensor and confirm its function; about 3900 ohms iirc between pins 1-3, place the wiper at mid displacement and you should read about 1950 ohms 1-2 and 2-3; gently rotate the wiper shaft and observe the resistance changes from min to ~ 3900 ohms between 2-1 and 2-3 depending on which way you rotate the wiper shaft. If you can verify the replacement pot is fine then you'll need to get into harness and connector tracing looking for bad/loose/corroded connectors, chafed wiring, exhaust gas leak burn through and such.
You initially listed several other faults too - 1762 (very common fault that can probably be ignored if it doesn't continually set); 1763 (abnormal over pressure possibly due to solenoid valve failing to open - this is interesting); 1776 (speed sensor circuit - you've got the height sensor override? so not unexpected if the switch has been flicked whilst moving etc) and 1777 (steering signal? my 03 LX FSM doesn't list this as an AHC fault as such, it does come up as a GX fault though so not sure about this sucker). So where too? I'd try and start with a clean slate: clear faults; observe height sensor feedback; post a screen shot of the AHC ecu page up with all parameters; verify the 3 connectors at the ecu are seated properly and that the override wiring was done appropriately with good insulation on the splices and the switch; verify no other wires were inadvertently cut/badly reconnected etc; in Techstream I'd try operating the control valve and accumulator solenoids (you can also operate these manually by shorting Ts&E1 and configuring the height control switch modes); check/clean/reseat each connector.
