Diagnostics

Find the cause. Restore the confidence.

A fault code is a starting point. We trace the system to understand what is really stopping your truck.

START WITH THE SYMPTOM

Careful checks.
A clearer answer.

Truck will not power up

Battery, key switch, contactor and controller are checked in sequence. We work through the basics before moving on to more complex procedures.

Cuts out under load

Low batteries and poor battery connections can cause a truck to cut out. Power stages and connectors also need checking before a controller is condemned.

Intermittent lift or travel

We trace joystick and lever assemblies, accelerator units, direction switches, wiring looms and contactor circuits.

Fault codes with no clear cause

A code points at a symptom. Multiple faults may have a common cause, including low battery voltage.

Battery will not hold charge

Checks help establish whether the problem lies with the cells, the charger or the truck drawing current. The discharge indicator may also need calibration.

Jungheinrich hydraulic control faults

Error codes 3111, 3121, 3131 and 3141 relate to hydraulic lever improbable errors. Code 3801 indicates travel direction improbable. Diagnosis helps confirm whether the lever, switch or another part of the system needs attention.

See the diagnostic work