Hyundai Elantra HD: Troubleshooting
Failure Diagnosis
| 1. |
In principle, ESC and TCS controls are prohibited in case of ABS
failure.
|
| 2. |
When ESC or TCS fails, only the failed system control is prohibited.
|
| 3. |
However, when the solenoid valve relay should be turned off in
case of ESC failure, refer to the ABS fail-safe.
|
| 4. |
Information on ABS fail-safe is identical to the fail-safe in
systems where ESC is not installed.
|
Memory Of Fail Code
| 1. |
It keeps the code as far as the backup lamp power is connected.
(O)
|
| 2. |
It keeps the code as long as the HCU power is on. (X)
|
Failure Checkup
| 1. |
Initial checkup is performed immediately after the HECU power
on.
|
| 2. |
Valve relay checkup is performed immediately after the IG2 ON.
|
| 3. |
It executes the checkup all the time while the IG2 power is on.
|
Countermeasures In Fail
| 1. |
Shut the system down and perform the following actions and wait
for HECU power OFF.
|
| 2. |
Turn the valve relay off.
|
| 3. |
Do not perform any ABS/TCS/ESC functions until normal operating
condition is restored.
|
Warning Lamp On
| 1. |
ABS warning lamp turns on when ABS is malfunctioning.
|
| 2. |
ESC operation lamp turns on when ESC is malfunctioning.
|
When power voltage and valve relay voltage are abnormal, input/output
related failure judgment is not made.
