Removal |
When replacing the ECM, the vehicle equipped with immobilizer must be performed the procedure as below.
[In the case of installing used ECM]
[In the case of installing new ECM]
Then the ECM key register process is completed automatically.
|
1. |
Turn ignition switch OFF and disconnect the negative (-) battery cable. |
2. |
Disconnect the ECM Connector (A). |
3. |
Remove the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner") |
4. |
Remove the mounting bolts (A) and nut (B), and then remove the ECM (C). |
5. |
Remove the ECM (B) after removing 4 nuts (A) from the bracket. |
Installation |
When replacing the ECM, the vehicle equipped with immobilizer must be performed the procedure as below.
[In the case of installing used ECM]
[In the case of installing new ECM]
Then the ECM key register process is completed automatically.
|
1. |
Install in the reverse order of removal.
|
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.
|
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). |
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Component Location (1)
1. Smart key unit (SMK)2. Interior antenna 23. Door outside handle4. Interior antenna 15. Buzzer
Component Location (2)
1. Trunk open switch2. Bumper antenna3. Trunk atenna
...
Hyundai Sonata LF 2014-2019 Service Manual: Trunk Lid Key Holder Repair procedures
Replacement
•
Put on gloves to protect your hands.
•
When prying with a flat-tip screwdriver or use a prying trim
tool, wrap it with protective tape, and apply protective tape around the
related parts, to prevent damage.
•
Ta ...