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: AVN Remote Controller (Sonata Sports) Schematic Diagrams
Circuit Diagram
...
Hyundai Sonata LF 2014-2019 Service Manual: Inhibitor Switch Description and Operation
Description
•
Components location : DCT (Dual Clutch Transmission)
•
Function
- The inhibitor switch mounted on the upper of transaxle and connected with shifter lever.
- The inhibitor switch has four points of contact and it makes the signals(S1, S2, S3, S4).
- The inhibitor sw ...