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Starter GN15-11000-AA 0399709050 for Ford EcoSport 1.5T Manual

Applicable models:Ford EcoSport 1.5T Manual

Reference part number: GN15-11000-AA 0399709050

Product Attributes

Power horsepower :	12V 1.6KW
Number of feet :	11T
Size :	241216single unit inner box
Weight :	net weight：2.1KG
Packaging :	Neutral kraft paper packaging
Spot/Pre sale :	Spot goods
Warranty :	1 year
Product number :

Product Details

Type :	starter
Specification :	12V 1.6KW
Number of feet :	11T
Brand :	nuojin
Number :	0399709050
Quality :	Remanufacture
Delivery time :	10 day

GN15-11000-AA 0399709050

Standard Installation Method for 12V 1.6KW Starter Motor of Ford EcoSport 1.5T Manual Transmission

Including key torque specifications and safety precautions to ensure correct installation and reliable starting performance at one attempt.

Pre-installation Preparation

Item	Details
Tools	Socket wrenches (10mm, 13mm/14mm), torque wrench, flathead/Phillips screwdrivers, wire brush, abrasive paper, high-pressure air gun, insulating tape, protective gloves/goggles
Spare Parts	12V 1.6KW compatible starter motor, new mounting bolts (if old ones are deformed/stretched), threadlocker, conductive paste, wire harness clips
Safety Measures	Turn off the engine and remove the key; disconnect the negative battery terminal and insulate the connector; lay fender covers to prevent scratches; ensure the working area is well-ventilated and free of open flames
Verification	Confirm that the model, power rating and mounting holes of the new starter motor match the original equipment; inspect for no exterior damage, and verify that the drive gear and solenoid switch operate smoothly

Installation Steps (in sequence)

1. Cleaning and Positioning

Clean oil stains, rust and residues of old gaskets from the mating surface of the engine and transmission to ensure a flat and dry installation surface.
Inspect the teeth of the flywheel ring gear. Replace the ring gear if there is chipping or excessive wear to avoid poor meshing with the starter drive gear.
Manually rotate the crankshaft to position the flywheel ring gear at an optimal angle for meshing with the starter drive gear.

2. Starter Motor Placement

Align the new starter motor with the mounting holes and push it in slowly to ensure initial smooth meshing between the drive gear and flywheel ring gear without jamming.
Insert the two M10 mounting bolts and hand-tighten 3–5 turns to confirm proper thread engagement without cross-threading.

3. Tightening the Mounting Bolts

Use a torque wrench to tighten the bolts to 45±5 N·m in a criss-cross pattern, performing the tightening in 2–3 stages to prevent housing deformation or bolt breakage.
If reusing the bolts, check for no stretching or thread damage; it is recommended to replace them with new bolts and apply a thin layer of threadlocker.

4. Electrical Connections (Critical Step)

Main Power Supply (B+ Terminal): Clean the starter motor main terminal and the positive battery cable connector, then apply a thin layer of conductive paste; tighten the nut to 12±2 N·m—over-tightening may cause terminal breakage.
Control Wire (S Terminal): Fully insert the solenoid switch control plug until a "click" sound is heard to confirm locking; check that the wire harness does not interfere with the transmission counterweight or moving components.
Wire Harness Securing: Fasten the wire harness along the original routing using clips to prevent wear due to vibration; bind the S-terminal wire to the main cable with tape at a point 30mm from the connection node to avoid loosening.

5. Reassembly and Inspection

Remove all tools and debris, ensuring no parts are left inside the engine compartment.
Remove the insulation from the negative battery terminal and reconnect the cable, tightening it to 5 N·m.
Verify that all plugs, terminals and bolts are securely fastened, and the wire harness has no damage or pinching.

Functional Testing and Validation

Test Item	Operation and Acceptance Criteria
No-Load Test	Turn the key to the "START" position—the starter motor should run rapidly with no abnormal noise; the drive gear should retract immediately when the key is released, with no jamming or idling.
Load Starting Test	Start the engine and observe smooth meshing between the starter drive gear and flywheel without grinding noise; perform 3 consecutive start attempts with an interval of ≥10 seconds between each attempt, ensuring reliable starting every time.
Electrical System Inspection	Measure the battery voltage ≥10.5V during starting, with a voltage drop ≤0.5V at the starter motor terminals; the charging voltage should be 13.8–14.7V at idle, with no abnormal discharge.
Leakage and Abnormal Noise Check	After starting, inspect the area around the starter motor for no engine oil or electrolyte leakage; check for no abnormal vibration or noise during idle and acceleration.

Key Precautions

1. Strict Torque Control

Tighten the mounting bolts to 45±5 N·m, the main power nut to 12±2 N·m, and the negative battery cable to 5 N·m. Never tighten by feel alone.

2. Standardized Electrical Connection Procedures

Connect the control wire (S terminal) first, then the main power supply (B+ terminal); reverse the order during disassembly to prevent short-circuit sparks.
Route the wire harness away from high-temperature areas (exhaust pipe) and moving parts (pulley, gear shift mechanism), and secure it firmly with clips.

3. Drive Gear Meshing Inspection

Manually rotate the starter drive gear before installation to ensure smooth extension and retraction; if meshing with the flywheel ring gear is too tight, slightly adjust the starter mounting angle or check the runout of the flywheel ring gear.

4. Bolt and Component Reuse Guidelines

Mounting bolts and main power nuts must be replaced if deformed, damaged or stretched—do not reuse defective parts.
Ensure the starter mounting surface gasket is intact; replace it if aged to prevent engine oil from seeping into the starter motor.

Common Troubleshooting

Fault Symptom	Possible Causes	Troubleshooting Methods
No response from the starter motor	Loose control wire plug, poor main power connection, solenoid switch failure	Reconnect the plug and tighten the nut securely; measure the voltage at the S terminal—if no voltage is detected, inspect the ignition switch or relay
Grinding noise during starting	Flywheel ring gear wear, misalignment of the starter drive gear, poor retraction of the solenoid switch	Inspect and replace the ring gear if necessary; adjust the starter mounting position; test the retraction function of the solenoid switch
Starter motor overheating/smoking	Poor main power connection, drive gear jamming, internal short circuit	Clean and tighten the main terminal; inspect gear meshing; replace the starter motor if faulty
Starter motor continues running after engine start	Solenoid switch sticking, short circuit in the control wire	Disconnect the negative battery terminal and repair the solenoid switch; inspect the control wire for damaged insulation causing a short circuit

After completing the installation and testing, it is recommended to recheck the torque of the starter mounting bolts and the status of electrical connections after driving 50–100 kilometers to ensure long-term reliable operation.

Key Precautions for Installation of 12V 1.6KW Starter Motor for Ford EcoSport 1.5T Manual Transmission

I. Safety Operation Precautions

Thorough Power-off Operation

Before installation, turn off the engine and remove the key, disconnect the negative battery cable and wrap the terminal with insulating tape to prevent accidental energization. Keep open flames away throughout the process to avoid hazards caused by battery electrolyte leakage.

Wear protective gloves and goggles during operation to prevent injury from splashed oil or slipping tools.

Engine Compartment Protection

Lay protective pads on the engine fenders and painted surfaces to avoid scratches from tools. Timely clean up spilled oil and dropped screws during installation to prevent foreign objects from entering the engine or transmission.

II. Installation Process Precautions

Torque Control (Core Requirement)

Tighten the starter motor mounting bolts in a criss-cross symmetrical sequence in 2–3 stages, with the final torque strictly controlled at 45±5 N·m. Over-tightening will cause housing deformation, while under-tightening will lead to vibration and abnormal noise.

The torque for the nut of the main power supply (B+ terminal) should be 12±2 N·m. Never use a high-torque wrench to force it tight, otherwise it may cause terminal breakage or thread slipping.

The torque for the negative battery cable should be 5 N·m to ensure a secure connection without terminal deformation.

References：

Source Type	Specific Source	Key Content	Traceability
Ford OEM Service Manual	Ford EcoSport 1.5T Official Workshop Manual, Chapter: Starting System → Starter Motor → Removal and Installation	Mounting hole positions, M10 mounting bolt torque of 45±5 N·m, main power terminal torque of 12±2 N·m, wiring sequence, flywheel ring gear inspection requirements	Highest; VIN-matched versions can be queried through Ford authorized dealers or official systems
OEM Technical Specifications	Corresponding chapters in Ford Global Service Information System (SIS) or Workshop Service Manual (WSM)	Solenoid switch operation test, wire harness routing and securing specifications, threadlocker/conductive paste application requirements	Highest; Contains descriptions of vehicle year/model and configuration differences
Supporting Technical Documentation	1.5TI Engine Starter Motor Assembly Guidelines (Released by OEM or authorized supplier)	Installation procedures, torque values, wire harness clip positions, terminal insulation and anti-vibration requirements	High; Consistent with OEM parameters
Industry General Specifications	General Technical Requirements for Automobile Starter Motor Installation (e.g., relevant provisions in GB/T 19055)	Power-off safety protocols, cleaning standards, no-load/load test procedures, voltage drop index (≤0.5V)	Medium; Suitable for compliance supplementation
Repair Platform Guidelines	Starter motor removal and installation specifications from platforms such as Autohome and PCauto	Safety operation protocols, tool selection, troubleshooting for common faults (e.g., gear grinding, no response)	Medium; For on-site quick reference

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