Hyundai Accent Manuals

Hyundai Accent: ECM Problem Inspection Procedure - Engine Control Module (ECM). Repair procedures - Engine Control System - Engine Control/Fuel System - Hyundai Accent 2010-2019 Service ManualHyundai Accent: ECM Problem Inspection Procedure

1.
TEST ECM GROUND CIRCUIT: Measure resistance between ECM and chassis ground using the backside of ECM harness connector as ECM side check point. If the problem is found, repair it.

Specification: Below 1Ω

2.
TEST ECM CONNECTOR: Disconnect the ECM connector and visually check the ground terminals on ECM side and harness side for bent pins or poor contact pressure. If the problem is found, repair it.
3.
If problem is not found in Step 1 and 2, the ECM could be faulty. If so, make sure there were no DTC's before swapping the ECM with a new one, and then check the vehicle again. If DTC's were found, examine this first before swapping ECM.
4.
RE-TEST THE ORIGINAL ECM: Install the original ECM (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original ECM with a new one. If problem does not occur, this is intermittent problem (Refer to Intermittent Problem Inspection Procedure in Basic Inspection Procedure).

Installation
When replacing the ECM, the vehicle equipped with the immobilizer must be performed procedure as below. [In the ...

ETC (Electronic Throttle Control) System. Description and Operation
...

See also:

Schematic Diagrams
Circuit Diagram ...

Engine compartment
* The actual engine room in the vehicle may differ from the illustration. 1. Engine coolant reservoir 2. Windshield washer fluid reservoir 3. Radiator cap 4. Engine oil filler cap 5. Engine oil ...

Removal
1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Lift the vehicle. 3. Rem ...

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