Hyundai Elantra: General Information / Troubleshooting
Features a fail-safe mechanism that provides "limp-home" 4th
gear hold to enable the vehicle to be driven to the owner's home or
dealer shop.
| • |
Fail-Safe : The TCM provides 4th gear hold and Reverse gear in the event of a malfunction. |
| • |
Limp Home : Maintains
minimal functionality (Drive(4th gear hold), Reverse) in the event of a
malfunction, making it possible for the vehicle to reach the dealer
shop.
|
|
Trouble symptom
| Suspect area
| Remedy
|
Shift delay
| Damaged clutch / brake
| Replace the brake or clutch.
|
Faulty hydraulic control
| Inspect the solenoid valve.
|
Faulty hydraulic supply
| Check the fluid level.
|
Not performed TCM learning
| TCM learning is required.
|
Vibration of the vehicle when shifting
| Damaged clutch / brake
| Replace the brake or clutch.
|
Not performed TCM learning
| TCM learning is required.
|
Faulty hydraulic control
| Inspect the solenoid valve.
|
Faulty hydraulic supply
| Check the fluid level.
|
Fixed gear (shift impossible)
| Faulty hydraulic control
| Inspect the solenoid valve.
|
Replace the solenoid valve or valve body.
|
Faulty harness & connector connection
| Check the harness & connector of transaxle.
|
Faulty TCM
| Replace the TCM.
|
Faulty CAN Communication
| Inspect the CAN communication line.
|
limited gear (shift possible)
| Faulty inhibitor switch
| Inspect the inhibitor switch.
|
Faulty input & output speed sensor
| Inspect the input & output speed sensor.
|
Faulty harness & connector connection
| Check the harness & connector of transaxle.
|
Poor acceleration
| Faulty hydraulic control
| Inspect the solenoid valve.
|
Faulty hydraulic supply
| Check the fluid level.
|
Faulty oil pump
| Replace the oil pump.
|
Transaxle Control Module (TCM) is in constant communication with the control system's components (sensors and solenoids).
If an abnormal signal is received for longer than the
predefined duration, TCM recognizes a fault, stores the fault code in
memory, and then sends out a fault signal through the self-diagnosis
terminal. Such fault codes are independently backed up and will not be
cleared even if the ignition switch is turned off, the battery is
disconnected, or the TCM connector is disconnected.
| • |
Disconnecting a sensor or an actuator connector while the
ignition switch is in the "On" position generates a Diagnostic Trouble
Code (DTC) and commits the code to memory. In such event, disconnecting
the battery will not clear the fault diagnosis memory. The diagnosis
tool must be used to clear the fault diagnosis memory. |
| • |
Before disconnecting the cable from battery terminal, turn
the ignition switch to OFF. Removal or connection of the battery cable
during engine operation or while the ignition switch is ON could cause
damage to the Transaxle Control Module (TCM). |
| • |
When checking the generator for the charging state, do not
disconnect the battery '+' terminal to prevent the Engine Control Module
(ECM) from damage due to the voltage. |
| • |
When charging the battery with the external charger,
disconnect the vehicle side battery terminals to prevent damage to the
TCM. |
|
Checking Procedure (Self-diagnosis)
| • |
When battery voltage is excessively low, diagnostic trouble
codes can not be read. Be sure to check the battery for voltage and the
charging system before starting the test. |
|
Inspection Procedure (Using the GDS)
| 1. |
Turn OFF the ignition switch. |
| 2. |
Connect the GDS to the data link connector on the lower crash pad. |
| 3. |
Turn ON the ignition switch. |
| 4. |
Use the GDS to check the diagnostic trouble code. |
| 5. |
Repair the faulty part from the diagnosis chart. |
| 6. |
Erase the diagnostic trouble code. |
Special Service Tools
Tools(Number and name)IllustrationUse09200-3N000Engine support fixture (Beam)Removal and installation of the transaxle.Use this beam (SST No. : 09200-3N000) with the support ...
Special Service Tools
