Hyundai Accent: Limp Home Function
Hyundai Accent RB (2010-2018) Service Manual / Body Electrical System / Immobilizer System / Repair procedures / Limp Home Function
| 1. |
Limp Home By Tester
If the PCM (ECM) detects the fault of the SMARTRA or transponder,
the PCM (ECM) will allow limp home function of the immobilizer. Limp
home is only possible if the user password (4 digits) has been given
to the PCM (ECM) before. This password can be selected by the vehicle
owner and is programmed at the service station.
The user password can be sent to the PCM (ECM) via the special
tester menu.
Only if the PCM (ECM) is in status "learnt" and the user password
status is "learnt" and the user password is correct, the PCM (ECM) will
be unlocked for a period of time (30 sec.). The engine can only be started
during this time. After the time has elapsed, engine start is not possible.
If the wrong user password is sent, the PCM (ECM) will reject
the request of limp home for one hour. Disconnecting the battery or
any other action cannot reduce this time. After connecting the battery
to the PCM (ECM), the timer starts again for one hour.
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| 2. |
Limp Home By Ignition Key
The limp home can be activated also by the ignition key. The user
password can be input to the PCM (ECM) by a special sequence of ignition
on/off.
Only if the PCM (ECM) is in status "learnt" and the user password
status is "learnt" and the user password is correct, the PCM (ECM) will
be unlocked for a period of time (30 sec.).
The engine can be started during this time. After the time has
elapsed, engine start is not possible. After a new password has been
input, the timer (30 sec.) will start again.
After ignition off, the PCM (ECM) is locked if the timer has elapsed
8 seconds. For the next start, the input of the user password is requested
again.
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Teaching Procedures
1.
Key Teaching Procedure
Key teaching must be done after replacing a defective PCM (ECM)
or when providing additional keys to the vehicle owner.
Th ...
Replacement
Problems And Replacement Parts:
Problem
Part set
GDS required?
All keys have been lost
Blank key (4)
YES
An ...
See also:
General Information
General
The supplemental restraint system (SRS) is designed to supplement the
seat belt to help reduce the risk or severity of injury to the driver and passenger
by activating and deploying ...
ETC (Electronic Throttle
Control) System. Troubleshooting
Fail-Safe Mode
Item
Fail-Safe
ETC Motor
Throttle valve stuck at 7В°
TPS
TPS 1 fault
ECM looks at TPS2
...
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