156-6155 1566155 Machine ECM Control Module Pre-Programmed for CAT 320C 950G 924G
156-6155 machine ECM control module for Caterpillar 320C, 950G and 924G.
- Interchangeability: Replaces 156-6155 (1566155).
- Application: Fits for 311C–385C excavators, 924G–980H wheel loaders, 216–268B skid steers, 247–287B multi terrain loaders, 416C–438C backhoes and TH-series telehandlers.
- Check Your Part Number: Your ECM label should show one of the numbers above; if not, send us a photo first.
- Programmed Before Dispatch: Send your machine serial number (PIN) after checkout — we flash it to your machine before shipping.
$1,399.00
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Bench-Tested - Every unit powered up and function-tested before dispatch.
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6-Month Warranty - From delivery, against defects in materials and workmanship.
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30-Day Returns - Unused items in original packaging. RMA required.
Product Details
This machine Electronic Control Module (machine ECM) is an aftermarket replacement for Caterpillar part number 156-6155 (1566155), part of the 207-5262 machine electronics group. It is used across a wide range of Caterpillar equipment including 300C-series excavators, 900G-series wheel loaders, skid steer and multi terrain loaders, backhoe loaders, integrated toolcarriers, telehandlers and D5N / D6N track-type tractors.
Each unit is remanufactured: disassembled, cleaned and inspected, with worn or failed electronic components replaced. The connector pins are checked for corrosion and fit, and the module is bench-tested under power to confirm it restores factory-specified operating parameters before it leaves our facility.
- Reference Numbers: 156-6155, 1566155
- Machine Platform: For Caterpillar C-series excavators, G-series loaders, skid steers and more (see Application Chart)
- Installation: Direct replacement; mounts and plugs in like the unit being removed
- Programming: Programmed before dispatch with the correct software for your machine serial number (PIN) and controller function
- Catalog Reference: Listed as part of the 207-5262 machine electronics group
- Testing: Every unit powered up and function-tested before dispatch
- Warranty: 6 months from delivery, with repair or replacement for defects in materials and workmanship
Send Us Your Machine Serial Number (PIN) — We Program The Module Before It Ships
This controller is catalogued as an unprogrammed unit, but it does not reach you blank. The same hardware is used across many machines and control functions, so we load the correct software for your machine in-house and it arrives ready to install, with no flashing needed on your side. Our 1–3 business day dispatch window starts from the moment we receive your complete machine information, not from the order date. The sooner you send it, the sooner your module ships.
Please send the following after checkout:
- Machine serial number (PIN), from the machine serial plate
- A clear photo of the machine serial plate
- A clear photo of the label on your current controller, including any software part number
- Where the controller is fitted and what it controls (for example implement, transmission or machine monitoring), if known
Installation Notes: Installation and removal by an experienced heavy-equipment technician is strongly recommended. Disconnect the battery before unplugging or connecting the ECM, check the harness connectors for bent pins or moisture, and clear any stored fault codes with your service tool after installation.
Fitment & OEM Interchange
OEM part numbers are listed for cross-reference only. They do not imply that this part was made by the equipment manufacturer. All brand names are used solely to identify compatibility.
| Part No. | Without Dash | Relationship | Engine Platform |
|---|---|---|---|
| 156-6155 | 1566155 | This listing | For Caterpillar equipment (see Application Chart) |
Application Chart — Compatible with Caterpillar Equipment
| Equipment Type | Models |
|---|---|
| Excavator | 311C, 312C, 312C L, 315C, 318C, 320C, 322C, 325C, 325C L, 330C, 330C L, 330C LN, 345C, 345C L, 365C, 365C L, 365C L MH, 385C, 385C L |
| Wheel Loader | 924G, 924GZ, 928G, 938G, 938G II, 950G, 950G II, 962G, 962G II, 966G, 966G II, 972G, 972G II, 980G, 980G II, 980H |
| Skid Steer Loader | 216, 216B, 226, 226B, 228, 232, 232B, 236, 236B, 242, 242B, 246, 246B, 248, 248B, 252, 252B, 262, 262B, 268B |
| Multi Terrain Loader | 247, 247B, 257, 257B, 267, 267B, 277, 277B, 287, 287B |
| Backhoe Loader | 416C, 416D, 420D, 426C, 428C, 430D, 436C, 438C |
| Mini Hydraulic Excavator | 301.5, 301.6, 301.8, 302.5, 303.5, 303.5E, 303.5E2 CR, 303E CR, 303ECR, 304.5, 304E, 304E2 CR, 305E, 305E2 CR, 305.5E, 305.5E2 CR, 307D, 308D, 308E CR, 308E SR, 308E2 CR, 308E2 SR, 308E2CR, 308E2SR |
| Compact Wheel Loader | 901C, 901C2, 902C, 902C2, 903C, 903C2, 914G, 914G2 |
| Integrated Toolcarrier | IT14G, IT14G2, IT28G, IT38G, IT38G II, IT62G, IT62G II |
| Telehandler | TH62, TH63, TH82, TH83, TH103, TH220B, TH330B, TH340B, TH350B, TH360B, TH460B, TH560B |
| Track Loader | 953C, 963C, 973C |
| Track-Type Tractor | D5N, D6N |
| Pipelayer | 561N |
| Mobile Hydraulic Power Unit | 345C, 345C L |
Confirm Before You Order: This is a machine controller, not an engine ECM, and one machine can carry more than one controller. Check that the controller you are replacing is labelled 156-6155 or 1566155, and send us a photo of the label and machine serial plate if you are unsure. We will confirm before you buy.
Technical Specifications
| Part Name | Machine Electronic Control Module (Machine ECM / Control Group) |
| Reference Numbers | 156-6155, 1566155 |
| Condition | Remanufactured |
| Catalog Reference | Part of 207-5262 machine electronics group |
| Installation Method | Direct replacement |
| Programming | Programmed before dispatch with software matched to your machine serial number (PIN); no flashing required after arrival |
| System Voltage | Application dependent, confirm on data plate |
| Housing Material | Application dependent, confirm on data plate |
| Connectors | Same layout as the 156-6155 unit being replaced; compare with your current ECM |
| Circuit Protection | Application dependent, confirm on data plate |
| Testing | Bench-tested: powered up and function-tested before dispatch |
| Warranty | 6 months from delivery against defects in materials and workmanship (repair or replacement) |
| Package Contents | 1 × Machine Electronic Control Module (programmed to your machine) |
This module is intended to restore factory-specified performance only. It does not alter, disable or remove any emission control function.
Common Failure Symptoms
| Symptom | What It Usually Points To |
|---|---|
| 320C excavator implement functions stop responding while the engine runs normally | Machine ECM output fault, or a damaged harness or solenoid on that circuit |
| Monitor or display shows a communication fault with a control module | Controller dropped off the data link: power, ground or data link wiring, or a failed module |
| Service tool cannot see one of the machine controllers | No power or ground at the controller, a data link fault, or a failed ECM |
| Loader transmission will not shift or stays in one gear | Transmission control output fault in the ECM, or a solenoid or wiring problem |
| Several unrelated machine fault codes appear at the same time | Unstable supply voltage or a controller that is failing internally |
| Functions cut out intermittently, especially over rough ground | Loose connector or ground, or an intermittent internal ECM fault |
| A controller swapped in from another machine does not work | The module is not loaded with software matched to this machine serial number and function |
| Green or white corrosion on the controller connector pins | Water intrusion that may have damaged the circuit board |
Check the Simple Causes First: Before replacing the controller, test battery voltage, clean and tighten the ground straps, and inspect the harness and connectors for damage or moisture. These cheaper faults cause many of the same symptoms.
Shipping & Quality Guarantee
- Bench-Tested: Every unit is powered up and function-tested before dispatch.
- Fast Dispatch: Dispatched in 1–3 business days. For this programmed item, the window starts once we receive your machine serial number (PIN).
- Free Express Shipping: Delivered in 3–8 business days by DHL, FedEx or UPS.
- Tracking: Tracking number provided within 24–48 hours of dispatch.
- Protective Packaging: Anti-static bag and padded carton.
- 6-Month Warranty: From delivery, against defects in materials and workmanship.
- 30-Day Returns: Unused items in original packaging; an RMA number is required.
- Technical Support: Send photos of your ECM label and data plate and our team will help confirm fitment.
Shipping & Customs Notice
Our price covers the product and shipping only. Import duties, VAT, GST and any other local taxes or customs clearance fees are not included and are the buyer’s responsibility.
All trademarks and part numbers are used for compatibility reference only. LIUCHUANG Parts is an independent aftermarket parts supplier and has no official or authorized relationship with any equipment manufacturer.
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