Nissan Qashqai MK2 J11 ECU 1.2 i 1197 cc Petrol HRA2DDT 2013 - 2019 6 MTM 5 Door Hatchback J11U

Nissan Qashqai MK2 J11 TEKNA DIG-T 64 REG 113bph Engine Control Unit Ecu 237104ED0C:EMS3155:S180206103 A:083404:245572820:14197:503A0:245572620:53120:5180207503 1.2 i 1197 cc HRA2DDT 6 Speed Manual J11U 2013,2014,2015,2016,2017,2018,2019 Petrol Mark2 TEKNA DIG-T MK2 Euro 5 v7447-100506

Additional Info

1. ECU Overview

ECU Part Numbers:

• 23710-4ED0C / EMS3155 / S180206103 A
• Engine: 1.2L HRA2DDT (1197cc, 113bhp, Turbocharged)
• Transmission: 6-Speed Manual
• Vehicle Model: Nissan Qashqai MK2 (J11) TEKNA DIG-T
• Production Years: 2013–2019
• Fuel Type: Petrol
• Emission Standard: Euro 5

ECU Functions:

The Engine Control Unit (ECU) is responsible for managing and optimizing various engine and vehicle functions:

1. Turbocharged Fuel Injection Control

   • Regulates the Direct Injection System for precise fuel delivery.
   • Works with fuel rail pressure sensors for optimal combustion.

2. Ignition Timing & Boost Control

   • Adjusts spark timing and turbo boost pressure for performance.
   • Prevents knocking (detonation) using a knock sensor.

3. Electronic Throttle Control (ETC)

   • Manages throttle opening based on driver input.
   • Works with MAP (Manifold Absolute Pressure) sensor.

4. Variable Valve Timing (VVT) Management

   • Adjusts camshaft timing for fuel efficiency and power.

5. On-Board Diagnostics (OBD-II) & Emissions Monitoring

   • Monitors engine parameters and stores Diagnostic Trouble Codes (DTCs).
   • Works with oxygen sensors and catalytic converter.

6. Idle Speed & Engine Load Regulation

   • Controls idle speed and adjusts power output based on load.

7. Communication with Other Modules (CAN Bus)

   • Exchanges data with ABS, traction control, transmission, and immobilizer.

2. ECU Installation Process

Pre-Installation Precautions

• Disconnect the Battery before handling the ECU to prevent electrical damage.
• Match ECU Part Number to ensure compatibility.
• Use Anti-Static Protection (ESD strap) to prevent static discharge.

Installation Steps

1. Locate the ECU:

   • Typically found under the dashboard or engine bay (near the fuse box).

2. Remove the Old ECU:

   • Disconnect all wiring harness connectors carefully.
   • Unscrew and remove the ECU from its mounting bracket.

3. Install the New ECU:

   • Secure it in the original mounting location.
   • Reconnect the wiring harness connectors properly.

4. Reconnect the Battery and proceed with ECU adaptation and coding.

5. ECU Reprogramming & Immobilizer Reset (if required):

   • Requires Nissan Consult III+ software for adaptation.
   • Immobilizer (IMMO) may need re-synchronization.

6. Perform a System Check:

   • Use an OBD-II scanner to check for error codes and verify installation.

3. Safety Precautions

• Avoid Moisture & Heat Exposure – Water damage can render the ECU unusable.
• Ensure Secure Wiring Connections – Loose connectors may cause communication errors.
• Check Software Compatibility – Mismatched firmware may cause performance issues.
• Perform Idle & Throttle Relearn Procedures for smooth idling and throttle response.

4. Common Fault Codes (DTCs) & Troubleshooting

The ECU logs DTCs when an issue is detected. Here are some common Nissan Qashqai MK2 (J11) ECU fault codes:

5. Clearing Fault Codes

Using an OBD-II Scanner (Nissan Consult III+ or Generic)

1. Connect the OBD-II scanner to the diagnostic port (under the dashboard).
2. Turn the ignition ON (without starting the engine).
3. Scan for error codes using the OBD-II scanner.
4. Select "Clear Codes" to erase stored DTCs.
5. Restart the engine and verify that no warning lights reappear.

Manual ECU Reset (Battery Disconnect Method)

1. Disconnect the battery (-) terminal and wait for 15–30 minutes.
2. Press and hold the brake pedal for 30 seconds (to discharge residual power).
3. Reconnect the battery and turn the ignition ON.
4. Start the engine and let it idle for 10 minutes.
5. Test drive the car and check for warning lights.

6. Fitment in the Car & Communication with Other Modules

ECU Location:

• Typically located under the dashboard near the fuse box.

Communication with Other Modules:

The ECU communicates via the CAN Bus system with:

1. Instrument Cluster – Displays check engine lights and warnings.
2. ABS & Traction Control System – Regulates engine power during wheel slip.
3. Immobilizer (IMMO) – Ensures only authorized keys can start the vehicle.
4. Turbo & Throttle System – Adjusts throttle response and boost control.
5. Airbag Module – Works with engine management during crash events.

7. Summary