Hyundai Kona Quiz
Engine Control System/Fuel System

Engine Control Module (ECM) Repair Procedures

In this manual: Engine Control System/Fuel System
General Information — 17Engine Mechanical System — 85Engine Electrical System — 50Emission Control System — 26Engine Control System/Fuel System — 152DCT (Dual Clutch Transmission) System — 50Four-Wheel Drive (4WD) System — 21Propeller Shaft and Axle (2WD-FF) — 28Suspension System (without ECS) — 32Steering — 21Restraints — 38Brake System — 64Body (Interior and Exterior) — 205Body Electrical System — 1Heating, Ventilation, and Air Conditioning — 66
21steps
~126min
5/5difficulty
0102030405011.89N·mlb·ft
Tightening torque found on this page
Done 0 of 21

Removal

  1. Turn the ignition switch OFF and disconnect the negative (-) battery cable.
  2. Remove the battery. (Refer to Engine Electrical System - "Battery")
  3. Disconnect the ECM connector (A).
  4. Remove the ECM bracket (B) after loosening the mounting bolts (A).
  5. Remove the ECM (B) by loosening the mounting nuts (A) on the bracket.

Installation

  1. Installation is the reverse of removal. ECM mounting bolt: 9.8–11.8 N·m. ECM bracket mounting bolt/nut: 9.8–11.8 N·m

ECM Circuit Inspection Procedure

  1. ECM GROUND CIRCUIT INSPECTION: Measure the resistance between the ECM ground point and chassis ground, using the rear of the ECM harness connector to check at the ECM side. If a problem is found, repair it.

    Specification: Less than 1 ohm

  2. ECM CONNECTOR INSPECTION: Disconnect the ECM connector and visually inspect the ground terminals on the ECM side and the harness side for bent pins or poor contact pressure. If a problem is found, repair it.
  3. If no problem is found in steps 1 and 2, the ECM may be faulty. Therefore, before replacing the ECM with a new one, make sure there are no DTCs, then inspect the vehicle again. If DTCs were detected, troubleshoot them first before replacing the ECM.
  4. RECHECK THE ORIGINAL ECM: Install the original ECM (which may be faulty) in a known good vehicle and check the vehicle. If the problem recurs, replace the original ECM with a new one. If the problem does not occur, it is an intermittent problem (refer to "Check Procedure" in the "Basic Inspection Procedure" section).
VIN Programming Procedure. The VIN (Vehicle Identification Number) is a number that contains vehicle information (manufacturer, vehicle type, vehicle line/series, body type, engine type, transmission type, model year, assembly plant location, etc. For more information, refer to the "GI" group in this SERVICE MANUAL). When replacing the ECM, the VIN must be programmed into the ECM. If the VIN is not in the ECM memory, a DTC (P0630) will be set.
  1. Select the "VIN Write" function in "Vehicle Software Management."
  2. Select "Write VIN" in "Identification Registration."
  3. Enter the VIN.
  4. Turn the ignition OFF, then turn it back ON.

Test yourself

A quick Hyundai Kona quiz: every answer comes with an explanation and a link to the manual page.