Equipment Electrical & Diagnostics
Fault codes, no-starts, intermittent electrical, ECM issues, wiring harness damage — modern equipment is wired like a small computer network and demands the right tools and training. Our certified techs diagnose with factory OEM software, repair to factory specs, and fix root causes — not just throw parts at the problem.
⚡ Submit an Electrical / Diagnostic Request ▼
Diagnose, Don't Guess
Replacing a $400 ECM that wasn't the actual fault is expensive. Replacing the right $40 sensor on the first try isn't. Our techs have the factory tools to read what's really happening.
Factory OEM Software
Bobcat ServiceAnalyzer, DEVELON DDT, Kubota Diagnostic Assistant — we read live engine, hydraulic, and emissions data plus module-specific fault codes, not just generic OBD.
CAN Bus Diagnostics
Modern machines use CAN bus networks between controllers. Communication faults, bad terminations, and wiring issues require the right scope and protocol training to find.
Schematic-Based Repair
OEM wiring schematics, pinout charts, and connector callouts — we trace circuits properly rather than swap-and-hope.
Harness & Connector Repair
Wiring harness damage, corroded connectors, broken pins, chafed insulation — we repair to OEM standard with proper splices, heat-shrink, and sealed connectors.
Controller Programming
ECM and module programming, software updates, calibration after sensor replacement — required for proper function on most modern equipment.
Mobile Diagnostics
Most electrical diagnostics can be done on-site — our service trucks dispatch with factory software, scopes, and meters for jobsite diagnosis.
Electrical Work We Do
Every electrical and electronic system on your equipment — from a starter swap to deep CAN bus diagnostics.
Electrical Problems We Solve
If you're chasing one of these, get the codes pulled with factory tools before swapping parts at random.
Won't Start / No Crank
Dead silent at the key, click only, slow crank. Battery, starter, safety interlock, security, or ECM issue — codes tell us which.
Check Engine / Fault Lights
Active dash warnings, persistent fault codes, derate. Pull live data and resolve the underlying circuit or sensor problem.
Intermittent Electrical
Works sometimes, doesn't others. Loose connection, corroded pin, chafed wire, or marginal sensor. Hardest faults to find, most rewarding to fix.
Dead Battery / Won't Hold Charge
Drains overnight, won't start after sitting. Could be battery, alternator output, or a parasitic draw we trace with a meter.
Erratic Gauges / Display
Cluster blank, gauges jumping, display freezing. Often CAN bus communication, controller, or power supply.
Joystick / Control Faults
Erratic controls, dead spots, won't acknowledge inputs, lockout active. Joystick electrical or interlock issue.
Lights Out or Dim
Work lights, dome, dash lights flickering or dead. Bad ground, blown fuse, switch failure, or wiring damage.
Safety Interlock Tripped
Won't run with seat occupied, controls locked out, e-stop won't reset. Seat switch, seatbelt, door switch, or ROPS interlock circuit.
Backup Camera Dead
No image, lines, or display. Camera, monitor, or wiring — we trace it and replace what's actually failed.
After Recent Storm / Lightning
Equipment hit by water, lightning, or surge. Multiple modules potentially damaged — we diagnose every controller.
Our Diagnostic Process
Scan, trace, isolate, repair. No parts cannon — we find the actual fault before we replace anything.
Scan & Read
OEM software pulls active and stored codes, live data, freeze frames, module status across the CAN network.
Isolate the Fault
Trace circuits with schematics and a meter. Test sensors, connectors, grounds, and supply voltages until we know exactly what failed.
Repair to Spec
Sensor or component replacement, harness or connector repair to OEM standard with proper splice and sealing.
Clear & Verify
Clear codes, perform calibrations or relearn procedures, verify live data is in spec, document for warranty.
Find Electrical Service Near You
Drop your machine at any of our 7 Michigan locations or schedule mobile diagnostics at your jobsite. Same OEM tools, same factory training, on-site or in-shop.
Electrical & Diagnostics
Frequently Asked Questions
Common questions about diagnostic charges, ECM repair, wiring harness work, and what we can do on-site vs. in-shop. Don't see your question? Give us a call.
How much does diagnostic time cost?
Why can't a generic OBD scanner just tell you what's wrong?
Can you repair a damaged wiring harness?
Do I have to bring the machine in?
Can you reprogram or update my ECM?
My machine just stopped working after a thunderstorm. Can you help?
What brands of equipment do you handle electrically?
How long does an electrical repair take?
Will my warranty be preserved?
Related Services
Looking for something more specific? Here are the services most often paired with this one.
Diesel Engine Rebuild
In-frame, out-of-frame, or reman swap on Bobcat, DEVELON, Kubota, Yanmar, Cummins, Cat/Perkins engines.
Learn MoreDPF & Emissions Service
Tier 4 DPF cleaning, DEF service, SCR/EGR repair, and derate resolution with factory tools.
Learn MoreMobile Field Service
Fully equipped service trucks bringing factory-certified repair directly to your jobsite anywhere in Michigan.
Learn MoreBobcat Service & Repair
Bobcat Platinum Certified service across the full lineup — skid steers, CTLs, excavators, telehandlers, UTVs, and more.
Learn MoreCab A/C & HVAC
EPA-certified A/C recharge, leak detection, compressor & evaporator service, heater repair.
Learn MorePreventative Maintenance
Scheduled PM programs following OEM intervals. Basic, Standard, Premium tiers + custom Fleet programs.
Learn MoreWon't Start? Throwing Codes? Going Crazy?
Stop guessing and start diagnosing. Factory tools, schematic-based repair, and root-cause fixes — in shop or on your jobsite.
Submit Your Electrical Service Request
Tell us the make, model, hours, any active fault codes (snap a photo of the display if helpful), and what symptoms you're seeing.
Prefer to talk? Call 1-888-380-6420 or email sales@carletonequipment.com