Thanks Jabonee, sounds like we're getting close, the lift/tilt block is not the easyest thing to get at, l have now swopped the actuator plugs so next time it works (IF) l will do SSdoxie's test, l'm still not ruling out moisture because of previous experience, when it was working the other day l should of kept it all moving by working the machine and warming everything up, that normally does the trick if stutters, but this time it may well be what you say, nothing lasts forever. keep you posted. Cheers.
Help: ACS Error on Bobcat Skid Steer
- Thread starter Gatorboy
- Start date
Jabonee
Platinum Member
Good deal. Remember to get the codes if any.:thumbsup:
Had it going today for a short time, (actuators plugs swopped) try open/close tilt and working fine off LH control, then arms start lifting untill top out, cant remember if l moved the RH control or they went on their own, stop machine and check codes, 32-35 as before, 4 in 1 open/close fine, on the verge of ordering hand sensor.
After looking closer at the service manual it looks like there is another controller (ACS) behind the RH footwell panels, looks like these have been off before as one of the bolts missing, up until now l have only checked the plugs behind the LH panels, and the AHC controller at rear above the battery, so will take a look at that soon.
After looking closer at the service manual it looks like there is another controller (ACS) behind the RH footwell panels, looks like these have been off before as one of the bolts missing, up until now l have only checked the plugs behind the LH panels, and the AHC controller at rear above the battery, so will take a look at that soon.
Jabonee
Platinum Member
IF the code stayed the same the issue is definitely in the tilt circuit. :thumbsup:
Think l will order hand sensor on Monday, when the ACS lockout is on, do the actuators still spool but oil flow is cut off to lift/tilt valve, l ask this question because on idle when l move handles side to side l hear some very slight change in engine note, it would be easier if l could have the actuators spooling without the engine running, also l notice when ACS is on l cannot run calibrate.
SSdoxie
Elite Member
You do not need the engine running to function the ACS. With key on press PTO and move handles, you will hear the actuators cycle.
The handle sensors work on 5v system. 5v constant going and 2.5v (+ or minus .2v) feedback in neutral, moving handle one direction will increase voltage and other direction decreases voltage on feedback wire going to the controller. I would check using a volt meter to verify a smooth transition of voltage through the full handle cycle before simply buying parts on best guess.
The ACS controller is the controller on the Right Hand side. Unplug the connections and inspect closely look for any discoloration on any pins, also push in and pull out on each wire in the plugs to make sure they are secured tight.
The handle sensors work on 5v system. 5v constant going and 2.5v (+ or minus .2v) feedback in neutral, moving handle one direction will increase voltage and other direction decreases voltage on feedback wire going to the controller. I would check using a volt meter to verify a smooth transition of voltage through the full handle cycle before simply buying parts on best guess.
The ACS controller is the controller on the Right Hand side. Unplug the connections and inspect closely look for any discoloration on any pins, also push in and pull out on each wire in the plugs to make sure they are secured tight.
The handle incoming RED/WHITE is 3.22v, can l cheat and jump 5v from another supply just to test the handle?. Many thanks.
SSdoxie
Elite Member
Check voltage on Lift sensor same way you check tilt. If Lift is only 3.2v then I would question accuracy of volt meter because both handle sensors and both actuator sensors are supplied from single output pin on the ACS controller (#1500 wire in J1 plug). If only 3.2v in all circuits, why is only tilt causing a problem?
If voltage at Lift is different unplug the 3 wire connection to the Tilt sensor and check voltage on frame harness side at the red/white wire and see if voltage is still low or comes back to 5v. If it is still low and Lift is 5v then that red/white wire #1610 is partially broken or loose where is splice into the harness.
If voltage at Lift is different unplug the 3 wire connection to the Tilt sensor and check voltage on frame harness side at the red/white wire and see if voltage is still low or comes back to 5v. If it is still low and Lift is 5v then that red/white wire #1610 is partially broken or loose where is splice into the harness.
Sorry SSdoxie, was doing in dark and my meter earth probe was hanging last wire strand when testing, sorted the meter out and had another go today, RED/WHITE input is 5.03v, PURPLE/WHITE pos N=1.45v, pos L=2.05v pos R=0.65, these are rough because they can change by 0.20 when check again, seems a bit all over the place and clearly outside the range, tested lift side N=2.31v, L=1.11v, R=3.56v, problem is cannot re cal because ACS light comes on stopping cal process. ACS controller pins/wires all good.
SSdoxie
Elite Member
Readings on the Tilt are nowhere near close to correct. Lift is good. Looks like it is Tilt hand sensor. With 1.45v in neutral the controller will read that as handle being moved to R and stroking actuator in that direction.