12725875 Computer Module ECU for G700B Motor Grader
High-quality replacement computer module ECU specifically designed
for G700B Motor Grader applications.
Product Specifications
| Product Name | Computer Module |
| Part Number | 12725875 |
| Brand Name | JIAJUE |
| Model | G700B |
| Condition | New |
| Availability | Rich Stock |
| Approximate Weight | 2KG |
| Size (per unit) | 20cm x 20cm x 8cm |
| Delivery Time | Usually delivered within 1-3 days after payment |
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Frequently Asked Questions
Q1: How long does it take to install the ECM on machine?
Physical Installation: 15-30 minutes. The unit is typically secured by 4 bolts on the
cool side of the engine.
Programming & Testing: 30-60 minutes.
Pro Tip: If the ECM is pre-programmed by us based on your machine's serial
number, it is essentially "Plug & Play." If not, you will need a
Cat ET (Electronic Technician) tool to flash the software, which
takes additional time. We recommend professional installation to
ensure correct parameter synchronization.
Q2: How to determine if the ECM is faulty and needs replacement?
• The ET diagnostic tool cannot communicate with the ECM, or it
displays a "Module Not Responding" error. This is a critical sign
of internal hardware failure.
• Active fault codes related to internal memory (EEPROM) or voltage
reference issues that persist after checking the wiring harness
often indicate ECM failure.
• Sudden engine stalling, severe power loss (Limp Mode), or
persistent misfiring (missing injector driver signals) after
sensors and harnesses have been ruled out.
• Visible signs of overheating (burning smell), water ingress,
corrosion, or broken pins on the connector headers.
Q3: What's your payment method?
Our payment methods include T/T, L/C, PayPal, etc.
Q4: Do you have stock?
Rich stock available.
Q5: How can I know my order is already shipping?
When the goods ship, we will share the tracking number. For sea or
air freight, we can provide the bill of lading.
Step-by-Step Testing Guide
Pro-Tip: HEUI (Hydraulic Electronic Unit Injection) systems are extremely
sensitive to contamination. A single speck of dust can cause
premature failure.
1. Prepare: Ensure the excavator is turned off and safely secured.
Disconnect the battery to avoid electrical accidents.
2. Inspect: Check the ECU for physical damage or loose connections.
3. Connect Diagnostic Tool: Use a diagnostic tool recommended by the
excavator's manufacturer. Connect it to the ECU according to the
tool's instructions.
4. Read Codes: Use the diagnostic tool to read any error codes (DTCs)
stored in the ECU. These codes indicate potential problems with the
ECU or connected systems.
5. Check Live Data: View live data parameters such as sensor readings
and system voltages. Ensure they are within normal ranges.
6. Functional Tests: If possible, perform tests to activate
components or simulate sensor inputs. Verify that the ECU responds
correctly without delays or errors.
7. Reset (if needed): Reset the ECU if recommended by the
manufacturer, especially after repairs or replacements.
8. Document: Keep a record of all tests, codes, and results for
future reference.
Quick Checklist for Buyers
Before replacing the ECM, always check the fuses, main relays, and
ground connections. In many cases, a faulty ground wire or low
battery voltage mimics an ECM failure.
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