Outrigger Position Not Confirmed, Boom Inhibited
What does MANITOU-OUTRIGGER-NOT-DEPLOYED mean?
The MANITOU-OUTRIGGER-NOT-DEPLOYED (Manitou) diesel fault code means: Outrigger Position Not Confirmed, Boom Inhibited. This is a serious severity code.
Common Symptoms
- Instrument cluster LCD or Evolution 2.0 display shows OUTRIGGER-NOT-DEPLOYED fault message
- Boom raise, extend, and slew functions are completely locked out or severely restricted
- Outrigger indicator lamps on the dash do not show all four legs as confirmed deployed
- Telehandler drives and steers normally but high-reach boom operations are blocked
- One or more outrigger legs appears physically down and pinned but controller still shows fault
- Fault clears temporarily when connector at the outrigger limit switch is wiggled or disturbed
- Machine beeps or sounds a continuous alarm when the operator attempts to use boom functions
Probable Causes (Ranked by Likelihood)
- Outrigger limit switch dirty, misaligned, or out of adjustment so it never reaches the closed-and-pinned position Very Likely
- Wiring connector at the outrigger limit switch corroded, backed-out pin, or open circuit from abrasion or pinch damage Very Likely
- Outrigger leg mechanically not reaching full extension or locking pin not fully seated, so switch physically cannot actuate Likely
- Limit switch internal failure, switch element worn or failed open, will not close even with correct mechanical contact Likely
- TCON or GCON controller input line fault, 12V signal from switch not being read correctly by the controller Possible
- CAN network communication fault between GCON and TCON causing outrigger status to not transmit correctly Possible
- Software calibration or configuration mismatch after a controller replacement or software update Less Likely
Step-by-Step Diagnostic Procedure
Start with a full visual walk-around. Confirm all four outrigger legs are physically lowered, fully extended, and that each locking pin is completely engaged. A pin that is 90% inserted will not actuate the limit switch. Push each pin firmly by hand to confirm it is seated.
Locate the limit switch on each outrigger leg. On most MRT and MLT models the switch is mounted on the outrigger box or on the pin housing itself. Clean off any mud, grease, or debris packed around the switch body and its actuator arm using a rag and contact cleaner.
With the machine powered on, use the Evolution 2.0 display or Manitou MASTERTECH service software to read live inputs. Navigate to the chassis I/O screen and confirm which outrigger channel is showing open (0) versus closed (1). This tells you exactly which leg is the problem leg.
At the suspect outrigger switch, manually depress the switch actuator by hand while watching the live input on the display. If the input changes from 0 to 1, the switch works and the problem is mechanical alignment or pin travel. If the input stays at 0, the switch or its wiring is the fault.
Measure voltage at the switch connector with a multimeter. With the machine on, you should see 12V DC on the supply wire. With the switch actuated, you should see the signal wire pulled high or low depending on switch type. Consult the Manitou electrical schematic for the exact signal logic (normally open or normally closed) for your model year.
Inspect the wiring harness from the switch back to the chassis connector. Outrigger harnesses are exposed to constant flexing, mud, and impact. Look for chafed insulation, crushed conduit, or corroded pins at every connector along the run. Clean all pins with electrical contact cleaner and reseat connectors firmly.
If a switch is confirmed bad, measure its resistance across the terminals with a multimeter. A normally open switch should read open circuit at rest and near zero ohms when actuated. Replace any switch that does not match this behavior. Manitou outrigger limit switches are serviceable items available from the dealer parts counter.
If all switches test good and wiring is clean but the fault persists, connect Manitou MASTERTECH service software to perform a full DTC read on both the TCON and GCON controllers. A CAN communication fault or a controller input fault at this point requires a trained Manitou dealer technician to diagnose further.
Frequently Asked Questions
What does the OUTRIGGER-NOT-DEPLOYED fault mean on my Manitou telehandler?
It means the machine's TCON or GCON controller has not received a confirmed signal from all outrigger limit switches showing that every leg is fully deployed and locked in position. Until all four legs report as deployed and pinned, the controller blocks boom functions to prevent the machine from tipping. It is a safety interlock, not an engine or hydraulic system failure.
Can I still drive and steer the machine with this fault active?
Yes, driving and steering are typically still available. The fault specifically inhibits high-risk boom operations like raising, extending, and slewing. However, you should not try to bypass the interlock or force boom functions. The outrigger system exists to keep the machine stable during lifts.
All four legs look down and pinned. Why is the fault still showing?
The most common reason is that one or more locking pins is not fully seated, so the limit switch actuator is not being physically contacted. Push each pin firmly by hand and check again. The second most common reason is a dirty or misaligned limit switch. Clean the switch area and check whether the actuator arm is actually touching the switch body when the pin is in.
How much does it cost to fix this fault?
If the fix is a dirty or misaligned switch, it costs almost nothing beyond your time. A replacement outrigger limit switch is typically $20 to $80 in parts. If the wiring harness is damaged, add $50 to $200 for connectors and conduit. If the job goes to a dealer for diagnosis and switch replacement, expect $150 to $600 total. Controller-level or CAN faults are more expensive, ranging from $500 to over $1,500.